Production and dosimetry of simultaneous therapeutic photons and electrons beam by linear accelerator: a monte carlo study

Size: px
Start display at page:

Download "Production and dosimetry of simultaneous therapeutic photons and electrons beam by linear accelerator: a monte carlo study"

Transcription

1 Production and dosimetry of simultaneous therapeutic photons and electrons beam by linear accelerator: a monte carlo study Navid Khledi 1, Azim Arbabi 2, Dariush Sardari 1, Mohammad Mohammadi 3, Ahmad Ameri 2 1- Department of Medical Radiation, Science and Research Branch, Azad University, Tehran, Iran 2- Department of Radiotherapy, Imam Hossein Hospital, Shahid Beheshti Medical University, Tehran, Iran 3- Department of Medical Physics, Hamedan Medical University, Hamedan, Iran

2 Outline A. Introduction 1. Advantages and disadvantages of treatment by Electron Beam 2. Advantages and disadvantages of treatment by Photon Beam 3. Advantages of mixed Photon and Electron Beam 4. Literatures B. The aims of current study C. Materials and Methods D. Results and discussion E. Conclusion 2

3 1. Advantages and disadvantages of treatment by Electron Advantages: Energy deposition in a small volume Applicable for shallow tumor treatment Lesser dose delivery to normal tissues beyond of the tumor Disadvantages: Small penetration depth Dependency of the dose distribution to the density heterogeneity Dependency to the flatness of the irradiated surface Increment of the penumbra with depth Small fields problem Req 3

4 2. Advantages and disadvantages of treatment by Photon Advantages: High penetration depth Applicable for deep tumor treatment Low dependency with heterogeneity and flatness of surface Low dependency of beam profile penumbra with depths Disadvantages: Dose delivery to normal tissues beyond of tumor Low dose level for superficial parts (for superficial tumors treatment) 4

5 3. Advantages of mixed Photon and Electron Beam Small mixed beam Reduction of dose distribution with density heterogeneity (in comparison with pure electron) Reduction of dose distribution with irradiated surface flatness (in comparison with pure electron) Improvement of profile penumbra changes (in comparison with pure electron) Reduction of the delivered dose to beyond of the tumor (in comparison with pure photon) No need to removing the applicator between the electron and photon mode Semi-deep tumors treatment It is a new type of beam 5

6 4. Literatures review Mu et al. (Acta Oncologica, 2004) 6

7 4. Literatures review (Semi-deep tumors treatment, Mu et al.) 10MV Photon 10-25MeV Electron Dose distribution for both the photon IMRT plan (upper part) and the mixed electron and photon beam plan (lower part(, Mu et al. (Acta Oncologica, 2004) 7

8 4. Literatures review (Semi-deep tumors treatment, Korevaar et al) Isodose plots of a flat, 40MeV electron beam(a), an intensity modulated, 40MeV/25MV mixed beam with a non-axis mix ratio of 0.8/0.2 (b), and a flat, 25MV photon beam (Korevaar et al., Physics in Medicine and Biology. 1999) 8

9 B. The aims of current study General Aims: Simultaneous Mixed Electron and Photon Beam Performing the simulation for water phantom and Nasal phantom Specific Aims: Monte carlo simulation (and measurement in the next stage) Treatment by mixed beam without removing the applicator after the exposing by electron beam Simulation of the Linac Head and mixed beam production components [and Production of the components (perforated Lead layer, scattering foil, beam blockers, and the Nasal phantom)] 9

10 C. Materials and Methods Varian Clinical Linear Accelerator 16 MeV Electron beam 10x10 cm 2 applicator Perforated Lead targets with 1 and 2 mm thickness Steel scattering foil for scattering the passed electrons from the punched target MCNPX monte carlo code Punched Lead target (b) The used geometry in the monte carlo simulation for producing the mixed beam, placed above of the applicator. a) The exited electron beam from the head of linac collimator incidence on the b) perforated Lead target, c1) The first steel scattering foil for reducing the intensity of center of electron beam, c2) The second scattering foil, d) The Lead shield for blocking the scattered photons and electrons, e) The applicator holder tray 10

11 C. Materials and Methods 11

12 C. Materials and Methods 12

13 C. Materials and Methods Mesh-Tally Type 3 13

14 D. Results and discussion The tuning of the simulation Energy cut-off: and 0.03 MeV for electron and photon The peak energy and full width at half maximum (FWHM) of initial electron beam (before the primary scattering foil) were obtained 0.42 and MeV. The penumbra 20%-80%, the distance between 20% and 80% dose points of profile curve 14

15 D. Results and discussion The simulations with the mixed beam production layers The PDDs of cm 2 field size for the mixed beam produced by 1 and 2 mm Lead targets with various punches diameters. 15

16 D. Results and discussion The comparing of the PDDs for different beams The comparison of beam profiles of pure 16 MeV electron and the mixed beam produced by 1 mm target configuration (Left), and comparison of beam profile for and 2 mm targets configurations (Right). 16

17 D. Results and discussion (small fields) The PDD curves of mixed beam (1 mm target, 0.3 cm punches diameters) and 16 MeV electron beam for 4 4 cm 2, 6 6 cm 2, and cm 2 cut-outs. The beam profile of mixed beam (1 mm target, 0.3 cm punches diameters) and 16 MeV electron beam for 4 4 cm 2 and 6 6 cm 2 cut-outs. 17

18 D. Results and discussion The PDD and Profile parameters of different beams. Field Size (cm 2 ) PDD Profile 1 mm Target 2 mm Target No Targ et 16 MeV Electro n 6 MV Photon D 0 (%) R 100 (cm) R 50 (cm) R P (cm) R P' (cm) X-Ray (%) Penumbra Penumbra 80/20 (cm) Chang es (%) Depth (cm) *** *** *** *** *** *** *** *** 0.2 cm punches cm punches cm punches cm punches cm punches cm punches (Scattering foils only) (Simulated) (Measured) *** *** *** *** *** *** *** *** *** *** *** ***

19 D. Results and discussion (Nasal Phantom) Pure 16 MeV Electron beam Mixed Electron and Photon beam 19

20 E. Conclusion A new type of therapeutic beam. Future types of linacs. No need to remove or insert the add-ons. The maximum dose depth of the mixed beams were in the range of 1.5 cm. Which is similar to 6 MV photon beam, but the dose gradient was more similar to the electron beam. The surface dose was between electron and photon beam. The 2 mm target showed a better capabilities in the most cases of penumbra, cut-out, and PDD parameters changes. Applicabe for semi-deep targets and small targets without dramatic changes in the PDD. The better stability in penumbra changes by depth, compared with the pure electron beam. No dramatic changes in dose distribution for non-flat irradiated surface and heterogeneous densities. 20

21 21

International Association of Scientific Innovation and Research (IASIR) (An Association Unifying the Sciences, Engineering, and Applied Research)

International Association of Scientific Innovation and Research (IASIR) (An Association Unifying the Sciences, Engineering, and Applied Research) International Association of Scientific Innovation and Research (IASIR) (An Association Unifying the Sciences, Engineering, and Applied Research) International Journal of Emerging Technologies in Computational

More information

Introduction. Measurement of Secondary Radiation for Electron and Proton Accelerators. Introduction - Photons. Introduction - Neutrons.

Introduction. Measurement of Secondary Radiation for Electron and Proton Accelerators. Introduction - Photons. Introduction - Neutrons. Measurement of Secondary Radiation for Electron and Proton Accelerators D. Followill, Ph.D. Radiological Physics Center U. T. M. D. Anderson Cancer Center Introduction Patients undergoing radiation therapy

More information

Assessment of variation of wedge factor with depth, field size and SSD for Neptun 10PC Linac in Mashhad Imam Reza Hospital

Assessment of variation of wedge factor with depth, field size and SSD for Neptun 10PC Linac in Mashhad Imam Reza Hospital Iran. J. Radiat. Res., 2004; 2 (2): 53-58 Assessment of variation of wedge factor with depth, field size and SSD for Neptun 10PC Linac in Mashhad Imam Reza Hospital M. Hajizadeh Saffar 1*, M.R. Ghavamnasiri

More information

Inhomogeneity effect in Varian Trilogy Clinac ix 10 MV photon beam using EGSnrc and Geant4 code system

Inhomogeneity effect in Varian Trilogy Clinac ix 10 MV photon beam using EGSnrc and Geant4 code system Journal of Physics: Conference Series PAPER OPEN ACCESS Inhomogeneity effect in Varian Trilogy Clinac ix 10 MV photon beam using EGSnrc and Geant4 code system To cite this article: S Yani et al 2016 J.

More information

Electron Beam ET - Reloaded Therapy - Reloaded

Electron Beam ET - Reloaded Therapy - Reloaded 8/4/216 Electron Beam ET - Reloaded Therapy - Reloaded Qiuwen Wu, Ph.D. Department of Radiation Oncology Duke University 1 Introduction: e vs. γ vs. p Electron Photon Proton Depth dose and lateral profiles

More information

A Dosimetric study of different MLC expansion aperture For the radiotherapy of pancreas cancer

A Dosimetric study of different MLC expansion aperture For the radiotherapy of pancreas cancer IOSR Journal of Applied Physics (IOSR-JAP) e-issn: 2278-861.Volume 6, Issue Ver. II (May-Jun. 201), PP 2- A Dosimetric study of different MLC expansion aperture For the radiotherapy of pancreas cancer

More information

Use of Bubble Detectors to Characterize Neutron Dose Distribution in a Radiotherapy Treatment Room used for IMRT treatments

Use of Bubble Detectors to Characterize Neutron Dose Distribution in a Radiotherapy Treatment Room used for IMRT treatments Use of Bubble Detectors to Characterize Neutron Dose Distribution in a Radiotherapy Treatment Room used for IMRT treatments Alana Hudson *1 1 Tom Baker Cancer Centre, Department of Medical Physics, 1331

More information

Today, I will present the second of the two lectures on neutron interactions.

Today, I will present the second of the two lectures on neutron interactions. Today, I will present the second of the two lectures on neutron interactions. 1 The main goal of this lecture is to tell you a little about clinical neutron therapy, first with fast neutron beams, and

More information

Application of MCNP4C Monte Carlo code in radiation dosimetry in heterogeneous phantom

Application of MCNP4C Monte Carlo code in radiation dosimetry in heterogeneous phantom Iran. J. Radiat. Res., 2003; 1(3): 143-149 Application of MCNP4C Monte Carlo code in radiation dosimetry in heterogeneous phantom A. Mostaar 1, M. Allahverdi 1,2, M. Shahriari 3 1 Medical Physics Department,

More information

Dose distribution and dosimetry parameters calculation of MED3633 palladium-103 source in water phantom using MCNP

Dose distribution and dosimetry parameters calculation of MED3633 palladium-103 source in water phantom using MCNP Iran. J. Radiat. Res., 2006; 4 (1): 15-19 Dose distribution and dosimetry parameters calculation of MED3633 palladium- source in water phantom using MCNP A.A. Mowlavi 1*,A. Binesh 2, H. Moslehitabar 3

More information

Electron therapy Class 3: Clinical procedures

Electron therapy Class 3: Clinical procedures Electron therapy Class 3: Clinical procedures Laurence Court lecourt@mdanderson.org Reference: Faiz M. Khan, The Physics of Radiation Therapy Slide acknowledgements: Karl Prado, Rebecca Howell, Kent Gifford,

More information

Diode calibration for dose determination in total body irradiation

Diode calibration for dose determination in total body irradiation Iran. J. Radiat. Res., 2008; 6 (1): 43-50 Diode calibration for dose determination in total body irradiation M.Allahverdi 1*, Gh. Geraily 1, M. Esfehani 3,A. Sharafi 2,A. Shirazi 1 1 Department of Medical

More information

Verification of Relative Output Factor (ROF) Measurement for Radiosurgery Small Photon Beams

Verification of Relative Output Factor (ROF) Measurement for Radiosurgery Small Photon Beams Verification of Relative Output Factor (ROF) Measurement for Radiosurgery Small Photon Beams Reduan A a, Mazurawati M b, Nur Iziana M a, Nik Ruzman NI b, Ahmad Z a and Ahmad Lutfi Y b a School of Health

More information

Borges C 1, Zarza- Moreno M 2, Teixeira N 2, Vaz P 3 1

Borges C 1, Zarza- Moreno M 2, Teixeira N 2, Vaz P 3 1 Borges C 1, Zarza- Moreno M 2, Teixeira N 2, Vaz P 3 1 Medicalconsult SA, Lisboa, Portugal; 2 Escola Superior de Tecnologias da Saúde, Lisboa, Portugal; 3 InsEtuto Tecnológico e Nuclear, InsEtuto Superior

More information

Peak temperature ratio of TLD glow curves to investigate the spatial variation of LET in a clinical proton beam

Peak temperature ratio of TLD glow curves to investigate the spatial variation of LET in a clinical proton beam Peak temperature ratio of TLD glow curves to investigate the spatial variation of LET in a clinical proton beam University of Chicago CDH Proton Center LET study C. Reft 1, H. Ramirez 2 and M. Pankuch

More information

Introduction. Modalities used in imaging guidance. Flat panel detector. X-ray Imaging Dose to Patients in the Era of Image-Guided Radiation Therapy

Introduction. Modalities used in imaging guidance. Flat panel detector. X-ray Imaging Dose to Patients in the Era of Image-Guided Radiation Therapy X-ray Imaging Dose to Patients in the Era of Image-Guided Radiation Therapy George Ding, Ron Price, Charles Coffey Vanderbilt-Ingram Cancer Center Vanderbilt University Medical Center, Nashville, TN Introduction

More information

SHIELDING TECHNIQUES FOR CURRENT RADIATION THERAPY MODALITIES

SHIELDING TECHNIQUES FOR CURRENT RADIATION THERAPY MODALITIES SHIELDING TECHNIQUES FOR CURRENT RADIATION THERAPY MODALITIES MELISSA C. MARTIN, M.S., FACR, FAAPM PRESIDENT AAPM - 2017 PRESIDENT - THERAPY PHYSICS INC., GARDENA, CA MELISSA@THERAPYPHYSICS.COM AAPM Spring

More information

Outline. Chapter 12 Treatment Planning Combination of Beams. Opposing pairs of beams. Combination of beams. Opposing pairs of beams

Outline. Chapter 12 Treatment Planning Combination of Beams. Opposing pairs of beams. Combination of beams. Opposing pairs of beams Chapter 12 Treatment Planning Combination of Beams Radiation Dosimetry I Text: H.E Johns and J.R. Cunningham, The physics of radiology, 4 th ed. http://www.utoledo.edu/med/depts/radther Outline Combination

More information

Comparison of microlion liquid filled ionisation chamber with Semiflex and Pinpoint air filled chambers

Comparison of microlion liquid filled ionisation chamber with Semiflex and Pinpoint air filled chambers Comparison of microlion liquid filled ionisation chamber with Semiflex and Pinpoint air filled chambers Rhys Carrington, Ysbyty Glan Clwyd, Bodelwyddan. MSc Medical Radiation Physics. Small field dosimetry

More information

Multilayer Gafchromic film detectors for breast skin dose determination in vivo

Multilayer Gafchromic film detectors for breast skin dose determination in vivo INSTITUTE OF PHYSICSPUBLISHING Phys. Med. Biol. 47 (2002) N31 N37 PHYSICS INMEDICINE AND BIOLOGY PII: S0031-9155(02)27324-8 NOTE Multilayer Gafchromic film detectors for breast skin dose determination

More information

Characterization and implementation of Pencil Beam Scanning proton therapy techniques: from spot scanning to continuous scanning

Characterization and implementation of Pencil Beam Scanning proton therapy techniques: from spot scanning to continuous scanning Characterization and implementation of Pencil Beam Scanning proton therapy techniques: from spot scanning to continuous scanning Supervisors Prof. V. Patera PhD R. Van Roermund Candidate Annalisa Patriarca

More information

This article was published in an Elsevier journal. The attached copy is furnished to the author for non-commercial research and education use, including for instruction at the author s institution, sharing

More information

Reference Photon Dosimetry Data for the Siemens Primus Linear Accelerator: Preliminary Results for Depth Dose and Output Factor

Reference Photon Dosimetry Data for the Siemens Primus Linear Accelerator: Preliminary Results for Depth Dose and Output Factor Reference Photon Dosimetry Data for the Siemens Primus Linear Accelerator: Preliminary Results for Depth Dose and Output Factor Sang Hyun Cho and Geoffrey S. Ibbott Department of Radiation Physics The

More information

Neutron dose evaluation in radiotherapy

Neutron dose evaluation in radiotherapy Neutron dose evaluation in radiotherapy Francesco d Errico University of Pisa, Italy Yale University, USA Radiation therapy with a linear accelerator (LINAC) Photoneutron production in accelerator head

More information

Evaluation of Dosimetric Characteristics of a Double-focused Dynamic Micro-Multileaf Collimator (DMLC)

Evaluation of Dosimetric Characteristics of a Double-focused Dynamic Micro-Multileaf Collimator (DMLC) Original Article PROGRESS in MEDICAL PHYSICS Vol. 26, No. 4, December, 2015 http://dx.doi.org/10.14316/pmp.2015.26.4.223 Evaluation of Dosimetric Characteristics of a Double-focused Dynamic Micro-Multileaf

More information

Imaging of Scattered Radiation for Real Time Tracking of Tumor Motion During Lung SBRT

Imaging of Scattered Radiation for Real Time Tracking of Tumor Motion During Lung SBRT Imaging of Scattered Radiation for Real Time Tracking of Tumor Motion During Lung SBRT April 25 nd, 2015 Lung Cancer Lung cancer is the most lethal cancer: Over 224,000 new diagnoses in the U.S. predicted

More information

Rotating and static sources for gamma knife radiosurgery systems: Monte Carlo studies

Rotating and static sources for gamma knife radiosurgery systems: Monte Carlo studies Rotating and static sources for gamma knife radiosurgery systems: Monte Carlo studies J. Y. C. Cheung and K. N. Yu a Department of Physics and Materials Science, City University of Hong Kong, Kowloon Tong,

More information

Using Monte Carlo Method for Evaluation of kvp & mas variation effect on Absorbed Dose in Mammography

Using Monte Carlo Method for Evaluation of kvp & mas variation effect on Absorbed Dose in Mammography Using Monte Carlo Method for Evaluation of kvp & mas variation effect on Absorbed Dose in Mammography Poster No.: C-2078 Congress: ECR 2011 Type: Authors: Keywords: DOI: Scientific Exhibit F. Salmani Rezaei,

More information

Out-of-field doses of CyberKnife in stereotactic radiotherapy of prostate cancer patients

Out-of-field doses of CyberKnife in stereotactic radiotherapy of prostate cancer patients EURAMED,MELODI and EURADOS Workshop, Helsinki 19.-20.4.2017 Out-of-field doses of CyberKnife in stereotactic radiotherapy of prostate cancer patients Jan Seppälä, Chief Physicist Tuomas Virén, Medical

More information

Imaging of Radiation Dose Using Cherenkov Light

Imaging of Radiation Dose Using Cherenkov Light Imaging of Radiation Dose Using Cherenkov Light Eric Brost 1, Yoichi Watanabe 1, Fadil Santosa 2, Adam Green 3 1 Department of Radiation Oncology, University of Minnesota 2 Institute for Mathematics and

More information

Neutron Measurements for Intensity Modulated Radiation Therapy

Neutron Measurements for Intensity Modulated Radiation Therapy SLAC-PUB-8443 April 2 Neutron Measurements for Intensity Modulated Radiation Therapy N. E. Ipe et al. Presented at Chicago 2 World Congress on Medical Physics and Biomedical Engineering, 7/23/2 7/28/2,

More information

Quality Assurance of TPS: comparison of dose calculation for stereotactic patients in Eclipse and iplan RT Dose

Quality Assurance of TPS: comparison of dose calculation for stereotactic patients in Eclipse and iplan RT Dose Petrovic B Comparison of dose calculation algorithms for stereotaxy Quality Assurance of TPS: comparison of dose calculation for stereotactic patients in and RT Dose Borislava Petrovic 1, Aleksandra Grządziel

More information

[Setawati et. al., Vol.4 (Iss10): October, 2017] ISSN: DOI: /zenodo

[Setawati et. al., Vol.4 (Iss10): October, 2017] ISSN: DOI: /zenodo EXTERNAL RADIATION SIMULATION OF LINAC TO DETERMINE EFFECTIVE DOSE IN ORGANS USING MONTE CARLO METHOD Evi Setawati *1, Muchammad Azam 1, Ngurah Ayu Ketut Umiati 1, Hammam Oktajianto 1 *1 Physics Department,

More information

Evaluation of lens dose from anterior electron beams: comparison of Pinnacle and Gafchromic EBT3 film

Evaluation of lens dose from anterior electron beams: comparison of Pinnacle and Gafchromic EBT3 film JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 17, NUMBER 2, 2016 Evaluation of lens dose from anterior electron beams: comparison of Pinnacle and Gafchromic EBT3 film Marcus Sonier, 1a Matt Wronski,

More information

A preliminary clinic dosimetry study for synchrotron radiation therapy at SSRF

A preliminary clinic dosimetry study for synchrotron radiation therapy at SSRF Nuclear Science and Techniques 24 (2013) 060102 A preliminary clinic dosimetry study for synchrotron radiation therapy at SSRF LI Zhaobin SHI Zeliang ZHANG Qing WANG Yong FU Shen * The 6 th People s Hospital

More information

3D printing of air slab caps for correction free small field dosimetry. Benjamin Perrett, Paul Charles, Tim Markwell, Tanya Kairn, Scott Crowe

3D printing of air slab caps for correction free small field dosimetry. Benjamin Perrett, Paul Charles, Tim Markwell, Tanya Kairn, Scott Crowe 3D printing of air slab caps for correction free small field dosimetry Benjamin Perrett, Paul Charles, Tim Markwell, Tanya Kairn, Scott Crowe Small fields? Defined as fields sizes too small to achieve

More information

Quality assurance in external radiotherapy

Quality assurance in external radiotherapy Quality assurance in external radiotherapy dr. Marius Laurikaitis medical physicist Oncological Hospital of Kaunas Medical University Hospital Kaunas, 2010-10-14 Acceptance and Commissioning Acceptance

More information

Protons Monte Carlo water-equivalence study of two PRESAGE formulations for proton beam dosimetry J. Phys.: Conf. Ser.

Protons Monte Carlo water-equivalence study of two PRESAGE formulations for proton beam dosimetry J. Phys.: Conf. Ser. Protons Monte Carlo water-equivalence study of two PRESAGE formulations for proton beam dosimetry T Gorjiara, Z Kuncic, J Adamovics and C Baldock 2013 J. Phys.: Conf. Ser. 444 012090 PRESAGE is a radiochromic

More information

IORT with mobile linacs: the Italian experience

IORT with mobile linacs: the Italian experience IORT with mobile linacs: the Italian experience G. Tosi, M. Ciocca lntroduction At the beginning of 1999 a mobile Linac (Novac 7, manufactured by Hitesys, Aprilia, Italy) able to produce electron beams

More information

Calibration of TLD700:LiF for Clinical Radiotherapy Beam Modalities & Verification of a High Dose Rate Brachytherapy Treatment Planning System

Calibration of TLD700:LiF for Clinical Radiotherapy Beam Modalities & Verification of a High Dose Rate Brachytherapy Treatment Planning System Calibration of TLD700:LiF for Clinical Radiotherapy Beam Modalities & Verification of a High Dose Rate Brachytherapy Treatment Planning System James D Rijken Thesis submitted for the degree of Master of

More information

Figure 1.1 PHITS geometry for PTB irradiations with: broad beam, upper panel; mono energetic beams, lower panel. Pictures of the setups and of the

Figure 1.1 PHITS geometry for PTB irradiations with: broad beam, upper panel; mono energetic beams, lower panel. Pictures of the setups and of the Figure 1.1 PHITS geometry for PTB irradiations with: broad beam, upper panel; mono energetic beams, lower panel. Pictures of the setups and of the PMMA ring holder with 7 containers are also shown. Relative

More information

IMRT QUESTIONNAIRE. Address: Physicist: Research Associate: Dosimetrist: Responsible Radiation Oncologist(s)

IMRT QUESTIONNAIRE. Address: Physicist:   Research Associate:   Dosimetrist:   Responsible Radiation Oncologist(s) IMRT QUESTIONNAIRE Institution: Date: / / Address: Physicist: e-mail: Telephone: Fax: Research Associate: email: Telephone: Fax: Dosimetrist: email: Telephone: Fax: Responsible Radiation Oncologist(s)

More information

A Monte Carlo Study for Photoneutron Dose Estimations around the High-Energy Linacs

A Monte Carlo Study for Photoneutron Dose Estimations around the High-Energy Linacs www.jbpe.org A Monte Carlo Study for Photoneutron Dose Estimations around the High-Energy Linacs Original 1 Physics Department, Faculty of Sciences, Ferdowsi University of Mashhad, Iran Mohammadi N 1,

More information

Small field diode dosimetry

Small field diode dosimetry Small field diode dosimetry Parham Alaei, Ph.D. Department of Radiation Oncology University of Minnesota NCCAAPM Symposium-October 10, 2013 1 Diodes as beam data collection detectors Diodes as in vivo

More information

Spatially Fractionated Radiation Therapy: GRID Sponsored by.decimal Friday, August 22, Pamela Myers, Ph.D.

Spatially Fractionated Radiation Therapy: GRID Sponsored by.decimal Friday, August 22, Pamela Myers, Ph.D. Spatially Fractionated Radiation Therapy: GRID Sponsored by.decimal Friday, August 22, 2014 Pamela Myers, Ph.D. Introduction o o o o o Outline GRID compensator Purpose of SFRT/GRID therapy Fractionation

More information

Non-target dose from radiotherapy: Magnitude, Evaluation, and Impact. Stephen F. Kry, Ph.D., D.ABR.

Non-target dose from radiotherapy: Magnitude, Evaluation, and Impact. Stephen F. Kry, Ph.D., D.ABR. Non-target dose from radiotherapy: Magnitude, Evaluation, and Impact Stephen F. Kry, Ph.D., D.ABR. Goals Compare out-of-field doses from various techniques Methods to reduce out-of-field doses Impact of

More information

Limits of Precision and Accuracy of Radiation Delivery Systems

Limits of Precision and Accuracy of Radiation Delivery Systems Limits of Precision and Accuracy of Radiation Delivery Systems Jean M. Moran, Ph.D. 1 and Timothy Ritter, Ph.D. 2 1 University of Michigan, Ann Arbor, Michigan 2 Ann Arbor Veterans Affairs Hospital, Ann

More information

Tissue inhomogeneity in proton therapy and investigation of its effects on BRAGG peak by using MCNPX code

Tissue inhomogeneity in proton therapy and investigation of its effects on BRAGG peak by using MCNPX code Volume 12, No 4 International Journal of Radiation Research, October 2014 Tissue inhomogeneity in proton therapy and investigation of its effects on BRAGG peak by using MCNPX code S.P. Shirmardi 1*, E.

More information

Measurement of organ dose in abdomen-pelvis CT exam as a function of ma, KV and scanner type by Monte Carlo method

Measurement of organ dose in abdomen-pelvis CT exam as a function of ma, KV and scanner type by Monte Carlo method Iran. J. Radiat. Res., 2004; 1(4): 187-194 Measurement of organ dose in abdomen-pelvis CT exam as a function of ma, KV and scanner type by Monte Carlo method M.R. Ay 1, M. Shahriari 2, S. Sarkar 3, P.

More information

DOSIMETRIC COMPARISION FOR RADIATION QUALITY IN HIGH ENERGY PHOTON BEAMS

DOSIMETRIC COMPARISION FOR RADIATION QUALITY IN HIGH ENERGY PHOTON BEAMS DOSIMETRIC COMPARISION FOR RADIATION QUALITY IN HIGH ENERGY PHOTON BEAMS EUGENIA BADITA 1, CATALIN VANCEA 1,3, ION CALINA 1,3, DANIELA STROE 2, MIHAELA DUMITRACHE 2,3, MIRABELA DUMITRACHE 1,3 1 National

More information

4 Essentials of CK Physics 8/2/2012. SRS using the CyberKnife. Disclaimer/Conflict of Interest

4 Essentials of CK Physics 8/2/2012. SRS using the CyberKnife. Disclaimer/Conflict of Interest SRS using the CyberKnife Sonja Dieterich, PhD, DABR Associate Professor University of California Davis Disclaimer/Conflict of Interest Consulting agreements with Broncus Medical and CyberHeart, Inc. Scientific

More information

RADIATION ONCOLOGY RESIDENCY PROGRAM Competency Evaluation of Resident

RADIATION ONCOLOGY RESIDENCY PROGRAM Competency Evaluation of Resident Resident s Name: RADIATION ONCOLOGY RESIDENCY PROGRAM Competency Evaluation of Resident Rotation: PHYS 703: Clinical Rotation 2 Inclusive dates of rotation: Feb. 26, 2016 Aug. 25, 2016 Director or Associate

More information

Traceability and absorbed dose standards for small fields, IMRT and helical tomotherapy

Traceability and absorbed dose standards for small fields, IMRT and helical tomotherapy Traceability and absorbed dose standards for small fields, IMRT and helical tomotherapy Simon Duane, Hugo Palmans, Peter Sharpe NPL, UK Stefaan Vynckier UCL, Brussels, Belgium LNE-LNHB / BIPM workshop,

More information

Dosimetry of the Gamma Knife TM

Dosimetry of the Gamma Knife TM Dosimetry of the Gamma Knife TM Sheridan Griffin Meltsner, Ph.D. Aurora Health Care St. Luke s Medical Center NCCAAPM Spring Meeting Outline Introduction to stereotactic radiosurgery Elekta Gamma Knife

More information

Proton Treatment. Keith Brown, Ph.D., CHP. Associate Director, Radiation Safety University of Pennsylvania

Proton Treatment. Keith Brown, Ph.D., CHP. Associate Director, Radiation Safety University of Pennsylvania Proton Treatment Keith Brown, Ph.D., CHP Associate Director, Radiation Safety University of Pennsylvania Proton Dose vs. Depth Wilson,. R.R. Radiological use of fast protons. Radiology 47:487-491, 1946.

More information

S. Derreumaux (IRSN) Accidents in radiation therapy in France: causes, consequences and lessons learned

S. Derreumaux (IRSN) Accidents in radiation therapy in France: causes, consequences and lessons learned S. Derreumaux (IRSN) Accidents in radiation therapy in France: causes, consequences and lessons learned MEDICAL LINEAR ACCELERATORS Electron beam (MeV) Photon beam (MV) PRECISION REQUIRED IN RADIOTHERAPY

More information

EQUIVALENT DOSE FROM SECONDARY NEUTRONS AND SCATTER PHOTONS IN ADVANCE RADIATION THERAPY TECHNIQUES WITH 15 MV PHOTON BEAMS

EQUIVALENT DOSE FROM SECONDARY NEUTRONS AND SCATTER PHOTONS IN ADVANCE RADIATION THERAPY TECHNIQUES WITH 15 MV PHOTON BEAMS PAPER EQUIVALENT DOSE FROM SECONDARY NEUTRONS AND SCATTER PHOTONS IN ADVANCE RADIATION THERAPY TECHNIQUES WITH 15 MV PHOTON BEAMS Isra Israngkul Na Ayuthaya *, Sivalee Suriyapee, Phongpheath Pengvanich

More information

Dosimetric characteristics of 137 Cs sources used in after loading Selectron system by Monte Carlo method

Dosimetric characteristics of 137 Cs sources used in after loading Selectron system by Monte Carlo method Iran. J. Radiat. Res., 2007; 5 (3): 147-152 Dosimetric characteristics of Cs sources used in after loading Selectron system by Monte Carlo method M.B.Tavakoli, D. Shahbazi-Gahrouei *, M. Hosseinpour Department

More information

Topics covered 7/21/2014. Radiation Dosimetry for Proton Therapy

Topics covered 7/21/2014. Radiation Dosimetry for Proton Therapy Radiation Dosimetry for Proton Therapy Narayan Sahoo Department of Radiation Physics University of Texas MD Anderson Cancer Center Proton Therapy Center Houston, USA Topics covered Detectors used for to

More information

Verification of the PAGAT polymer gel dosimeter by photon beams using magnetic resonance imaging

Verification of the PAGAT polymer gel dosimeter by photon beams using magnetic resonance imaging Iran. J. Radiat. Res., 2008; 6 (2): 83-87 Verification of the PAGAT polymer gel dosimeter by photon beams using magnetic resonance imaging B. Azadbakht 1, M.H. Zahmatkesh 2 *, k. Hadad 1, S. Bagheri 2

More information

Radiation Doses to Contralateral Breast During Irradiation of Breast Cancer

Radiation Doses to Contralateral Breast During Irradiation of Breast Cancer Med. J. Cairo Univ., Vol. 77, No. 2, June: 27-31, 2009 www.medicaljournalofcairouniversity.com Radiation Doses to Contralateral Breast During Irradiation of Breast Cancer ADEL G. WAHBA, M.D.* and REHAM

More information

Disclosure. Outline. Machine Overview. I have received honoraria from Accuray in the past. I have had travel expenses paid by Accuray in the past.

Disclosure. Outline. Machine Overview. I have received honoraria from Accuray in the past. I have had travel expenses paid by Accuray in the past. Clinical Implementation of the CyberKnife Disclosure I have received honoraria from Accuray in the past. I have had travel expenses paid by Accuray in the past. Mary Ellen Masterson-McGary McGary CyberKnife

More information

Dosimetric characterization of surface applicators for use with the Xoft ebx system

Dosimetric characterization of surface applicators for use with the Xoft ebx system Dosimetric characterization of surface applicators for use with the Xoft ebx system R.M. Kennedy University of Wisconsin Medical Research Center Madison, WI April 23, 2010 Introduction Squamous and basal

More information

ARCCHECK: COMPREHENSIVE EVALUATION OF THE DIODE ARRAY PHANTOM - RULES OF THUMB FOR PHANTOM USE FOR QA. By Vibha Chaswal, Ph.D.

ARCCHECK: COMPREHENSIVE EVALUATION OF THE DIODE ARRAY PHANTOM - RULES OF THUMB FOR PHANTOM USE FOR QA. By Vibha Chaswal, Ph.D. ARCCHECK: COMPREHENSIVE EVALUATION OF THE DIODE ARRAY PHANTOM - RULES OF THUMB FOR PHANTOM USE FOR QA By Vibha Chaswal, Ph.D. ACKNOWLEDGEMENT Dr. Nilendu Gupta, Dr. Arnab Chakrabarti Dr. Yi Rong, Michael

More information

Monte Carlo simulation of 192 Ir radioactive source in a phantom designed for brachytherapy dosimetry and source position evaluation.

Monte Carlo simulation of 192 Ir radioactive source in a phantom designed for brachytherapy dosimetry and source position evaluation. Monte Carlo simulation of 192 Ir radioactive source in a phantom designed for brachytherapy dosimetry and source position evaluation Samuel Chiquita 1 1 University of Porto, Porto, Portugal Abstract In

More information

Epithermal neutron beams from the 7 Li(p,n) reaction near the threshold for neutron capture therapy

Epithermal neutron beams from the 7 Li(p,n) reaction near the threshold for neutron capture therapy IL NUOVO CIMENTO 38 C (2015) 179 DOI 10.1393/ncc/i2015-15179-9 Colloquia: UCANS-V Epithermal neutron beams from the 7 Li(p,n) reaction near the threshold for neutron capture therapy I. Porras( 1 ),J.Praena(

More information

Radiation qualities in carbon-ion radiotherapy at NIRS/HIMAC

Radiation qualities in carbon-ion radiotherapy at NIRS/HIMAC Radiation qualities in carbon-ion radiotherapy at NIRS/ Shunsuke YONAI Radiological Protection Section Research Center for Charged Particle Therapy National Institute of Radiological Sciences (NIRS) E-mail:

More information

Intensity Modulated RadioTherapy

Intensity Modulated RadioTherapy Intensity Modulated RadioTherapy A clinical application of a small accelerator University Medical Center Groningen A.A. van t Veld PhD I. Hoveijn PhD part 1 part2 CERN/KVI accelerator school, Zeegse, June

More information

Learning Objectives. Clinically operating proton therapy facilities. Overview of Quality Assurance in Proton Therapy. Omar Zeidan

Learning Objectives. Clinically operating proton therapy facilities. Overview of Quality Assurance in Proton Therapy. Omar Zeidan Overview of Quality Assurance in Proton Therapy Omar Zeidan AAPM 2012 Charlotte, NC July 30 st, 2012 Learning Objectives Understand proton beam dosimetry characteristics and compare them to photon beams

More information

The Journey of Cyberknife Commissioning

The Journey of Cyberknife Commissioning The Journey of Cyberknife Commissioning Jun Yang Ph.D 1, Alan Cohen M.S. 2 1) Adjunct Associate Professor Drexel University Alliance Oncology 2) Chief Medical Physicist Accuray Incorporated X-ray Sources

More information

International Practice Accreditation

International Practice Accreditation International Practice Accreditation Program endorsed and supported by Jean-Xavier Hallet Punta Cana, Nov 2017 Short History Created in 2004 by ESTRO, independent since 2009 Dosimetry Laboratory (IGR):

More information

Dosisverifikation mit Delta 4 Discover während der Behandlung

Dosisverifikation mit Delta 4 Discover während der Behandlung Dosisverifikation mit Delta 4 Discover während der Behandlung Anders Adolfson, Regional Sales Manager at Scandidos AK IMRT 2015 in Erlangen, March 19 th 2015 Agenda Which problem does Delta 4 Discover

More information

DOSE DISTRIBUTION ANALYZE OF THE BODY STI USED MONTE CARLO METHOD

DOSE DISTRIBUTION ANALYZE OF THE BODY STI USED MONTE CARLO METHOD Proceedings of the Tenth EGS4 Users' Meeting in Japan, KEK Proceedings 2002-18, p.65-73 DOSE DISTRIBUTION ANALYZE OF THE BODY STI USED MONTE CARLO METHOD N. Tohyama, H. Saitoh, T. Fujisaki 1, S. Abe 1

More information

CALCULATION OF BACKSCATTER FACTORS FOR LOW ENERGY X-RAYS USING THE TOPAS MONTE CARLO CODE

CALCULATION OF BACKSCATTER FACTORS FOR LOW ENERGY X-RAYS USING THE TOPAS MONTE CARLO CODE CALCULATION OF BACKSCATTER FACTORS FOR LOW ENERGY X-RAYS USING THE TOPAS MONTE CARLO CODE Emily Hewson 1 Martin Butson 1,2 Robin Hill 1,2 1 Institute of Medical Physics, School of Physics, University of

More information

Data Collected During Audits for Clinical Trials. July 21, 2010 Geoffrey S. Ibbott, Ph.D. and RPC Staff

Data Collected During Audits for Clinical Trials. July 21, 2010 Geoffrey S. Ibbott, Ph.D. and RPC Staff Data Collected During Audits for Clinical Trials July 21, 2010 Geoffrey S. Ibbott, Ph.D. and RPC Staff RPC Programs Assure... Constancy of basic machine calibration (TLD/OSLD Audits) Validity of treatment

More information

A comparative study between flattening filter-free beams and flattening filter beams in radiotherapy treatment

A comparative study between flattening filter-free beams and flattening filter beams in radiotherapy treatment Oncology and Translational Medicine DOI 10.1007/s10330-016-0183-3 December 2017, Vol. 3, No. 6, P260 P266 REVIEW ARTICLE A comparative study between flattening filter-free beams and flattening filter beams

More information

Radiosurgery by Leksell gamma knife. Josef Novotny, Na Homolce Hospital, Prague

Radiosurgery by Leksell gamma knife. Josef Novotny, Na Homolce Hospital, Prague Radiosurgery by Leksell gamma knife Josef Novotny, Na Homolce Hospital, Prague Radiosurgery - Definition Professor Lars Leksell The tools used by the surgeon must be adapted to the task and where the human

More information

This article was published in an Elsevier journal. The attached copy is furnished to the author for non-commercial research and education use, including for instruction at the author s institution, sharing

More information

CHARACTERIZATION OF THE ELECTRON BEAM RADIATION FIELD BY CHEMICAL DOSIMETRY

CHARACTERIZATION OF THE ELECTRON BEAM RADIATION FIELD BY CHEMICAL DOSIMETRY CHARACTERIZATION OF THE ELECTRON BEAM RADIATION FIELD BY CHEMICAL DOSIMETRY M. R. NEMTANU, C. OPROIU, M. BRASOVEANU, M. OANE National Institute for Laser, Plasma and Radiation Physics, Electron Accelerator

More information

Spinal Cord Doses in Palliative Lung Radiotherapy Schedules

Spinal Cord Doses in Palliative Lung Radiotherapy Schedules Journal of the Egyptian Nat. Cancer Inst., Vol. 8, No., June: -, 00 Spinal Cord Doses in Palliative Lung Radiotherapy Schedules HODA AL-BOOZ, FRCR FFRRCSI M.D.* and CAROL PARTON, Ph.D.** The Departments

More information

PREDICTION OF ABSORBED DOSE DISTRIBUTIONS AND NEUTRON DOSE EQUIVALENT VALUES IN PROTON BEAM RADIATION THERAPY

PREDICTION OF ABSORBED DOSE DISTRIBUTIONS AND NEUTRON DOSE EQUIVALENT VALUES IN PROTON BEAM RADIATION THERAPY PREDICTION OF ABSORBED DOSE DISTRIBUTIONS AND NEUTRON DOSE EQUIVALENT VALUES IN PROTON BEAM RADIATION THERAPY IDENTIFICATION NUMBER: ANS-RT-PROTON-01 BENCHMARK CLASSIFICATION: Radiation Therapy BENCHMARK

More information

Verification of treatment planning system parameters in tomotherapy using EBT Radiochromic Film

Verification of treatment planning system parameters in tomotherapy using EBT Radiochromic Film Verification of treatment planning system parameters in tomotherapy using EBT Radiochromic Film E.B.Rajmohan¹, Pratik Kumar¹, Bhudatt Paliwal,² David Westerly², N.Gopishankar³, R.K.Bisht³, D.Tewatia²,

More information

AAPM TG 158: Measurement and calculation of doses outside the treated volume from external-beam radiation therapy

AAPM TG 158: Measurement and calculation of doses outside the treated volume from external-beam radiation therapy AAPM TG 158: Measurement and calculation of doses outside the treated volume from external-beam radiation therapy Stephen F. Kry a) Department of Radiation Physics, MD Anderson Cancer Center, Houston,

More information

IMRT point dose measurements with a diamond detector

IMRT point dose measurements with a diamond detector IMRT point dose measurements with a diamond detector Erin Barnett, Marc MacKenzie, B. Gino Fallone Department of Physics, University of Alberta, and Department of Medical Physics, Cross Cancer Institute,

More information

Monte Carlo water-equivalence study of two PRESAGE formulations for proton beam dosimetry

Monte Carlo water-equivalence study of two PRESAGE formulations for proton beam dosimetry Monte Carlo water-equivalence study of two PRESAGE formulations for proton beam dosimetry T Gorjiara 1, Z Kuncic 1, J Adamovics 2 and C Baldock 1,3 1 Institute of Medical Physics, School of Physics, University

More information

Calibration of dosimeters for small mega voltage photon fields at ARPANSA

Calibration of dosimeters for small mega voltage photon fields at ARPANSA Calibration of dosimeters for small mega voltage photon fields at ARPANSA G Ramanathan 1, C.Oliver 1, D J Butler 1, P D Harty 1, Viliami Takau 1 Tracy Wright 1 and Tom Kupfer 2 1 Australian Radiation Protection

More information

Leila E. A. Nichol Royal Surrey County Hospital

Leila E. A. Nichol Royal Surrey County Hospital 2 nd UK and Ireland Dosimetry Check User Meeting Symposium Clatterbridge Cancer Centre, 24 th October 2012 Leila E. A. Nichol Royal Surrey County Hospital Leila.Nichol@nhs.net *My experience with Dosimetry

More information

8/2/2018. Disclosures. In ICRU91: SRT = {SBRT/SABR, SRS}

8/2/2018. Disclosures. In ICRU91: SRT = {SBRT/SABR, SRS} High Dose, Small Field Radiation Therapy: Lessons from the HyTEC Project and the ICRU 91 Report Part 1: Small Field Dosimetry Jan Seuntjens, Ph.D, FCCPM, FAAPM, FCOMP Director and Professor, Medical Physics

More information

An Active Matrix Flat Panel Dosimeter AMFPD for in-phantom dosimetric measurements

An Active Matrix Flat Panel Dosimeter AMFPD for in-phantom dosimetric measurements An Active Matrix Flat Panel Dosimeter AMFPD for in-phantom dosimetric measurements Jean M. Moran, a Donald A. Roberts, Teamour S. Nurushev, Larry E. Antonuk, Youcef El-Mohri, and Benedick A. Fraass Department

More information

3D Dosimetry with Polymer Gel

3D Dosimetry with Polymer Gel 3D Dosimetry with Polymer Gel Yoichi Watanabe, Ph.D. University of Minnesota Minneapolis, MN NCCAAPM Meeting, Minneapolis, MN NCCAAPM Meeting, Minneapolis, MN April 28, 2006 Outline I. Basics of polymer

More information

Radiotherapy and tumours in veterinary practice: part one

Radiotherapy and tumours in veterinary practice: part one Vet Times The website for the veterinary profession https://www.vettimes.co.uk Radiotherapy and tumours in veterinary practice: part one Author : Aleksandra Marcinowska, Jane Dobson Categories : Companion

More information

Dosimetric characterization with 62 MeV protons of a silicon segmented detector for 2D dose verifications in radiotherapy

Dosimetric characterization with 62 MeV protons of a silicon segmented detector for 2D dose verifications in radiotherapy Dosimetric characterization with 62 MeV protons of a silicon segmented detector for 2D dose verifications in radiotherapy C. Talamonti M. Bruzzi,M. Bucciolini, L. Marrazzo, D. Menichelli University of

More information

Application(s) of Alanine

Application(s) of Alanine Application(s) of Alanine Simon Duane Radiotherapy Standards User Group, 5 June 2007 Outline Alanine/EPR dosimetry characteristics, usage (dis)advantages for reference dosimetry Traceable dosimetry for

More information

To Reduce Hot Dose Spots in Craniospinal Irradiation: An IMRT Approach with Matching Beam Divergence

To Reduce Hot Dose Spots in Craniospinal Irradiation: An IMRT Approach with Matching Beam Divergence SCIENCE & TECHNOLOGY To Reduce Hot Dose Spots in Craniospinal Irradiation: An IMRT Approach with Matching Beam Divergence Alburuj R. Rahman*, Jian Z. Wang, Dr. Z. Huang, Dr. J. Montebello Department of

More information

Assessment of Dosimetric Functions of An Equinox 100 Telecobalt Machine

Assessment of Dosimetric Functions of An Equinox 100 Telecobalt Machine 2017 IJSRST Volume 3 Issue 3 Print ISSN: 2395-6011 Online ISSN: 2395-602X Themed Section: Science and Technology Assessment of Dosimetric Functions of An Equinox 100 Telecobalt Machine Samuel Nii Adu Tagoe

More information

Dosimetric study of 2D ion chamber array matrix for the modern radiotherapy treatment verification

Dosimetric study of 2D ion chamber array matrix for the modern radiotherapy treatment verification JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 11, NUMBER 2, SPRING 2010 Dosimetric study of 2D ion chamber array matrix for the modern radiotherapy treatment verification Sathiyan Saminathan, a Ravikumar

More information

EXPERIMENTAL RESULTS IN PERCENTAGE DEPTH DOSE (PDD) DETERMINATION AT THE EXTENDED DISTANCES *

EXPERIMENTAL RESULTS IN PERCENTAGE DEPTH DOSE (PDD) DETERMINATION AT THE EXTENDED DISTANCES * Romanian Reports in Physics, Vol. 66, No. 1, P. 157 165, 2014 EXPERIMENTAL RESULTS IN PERCENTAGE DEPTH DOSE (PDD) DETERMINATION AT THE EXTENDED DISTANCES * M. SPUNEI 1,2, M. MIHAI 3, I. MĂLĂESCU 1 1 West

More information

Impact of range straggling and multiple scattering on proton therapy of brain, using a slab head phantom

Impact of range straggling and multiple scattering on proton therapy of brain, using a slab head phantom Volume 12, No 2 International Journal of Radiation Research, April 2014 Impact of range straggling and multiple scattering on proton therapy of brain, using a slab head phantom S.B. Jia 1, A.A. Mowlavi

More information

Characteristics Analysis of High Energy External Radiotherapy Beams in Water

Characteristics Analysis of High Energy External Radiotherapy Beams in Water Volume 3, No 1/2016 Research Article Malays. j. med. biol. res. ISSN 2313-0008 (Print); ISSN 2313-0016 (Online) Characteristics Analysis of High Energy External Radiotherapy Beams in Water M. A. Rahman

More information