IAEA-CN THE ESTRO-EQUAL RESULTS FOR PHOTON AND ELECTRON BEAMS CHECKS IN EUROPEAN RADIOTHERAPY BEAMS*
|
|
- Victor Egbert Burke
- 6 years ago
- Views:
Transcription
1 THE ESTRO-EQUAL RESULTS FOR PHOTON AND ELECTRON BEAMS CHECKS IN EUROPEAN RADIOTHERAPY BEAMS* H. Ferreira, A. Dutreix, A. Bridier, D. Marre, J. Chavaudra, H. Svensson ESTRO-EQUAL Measuring Laboratory, Service de Physique, Institut Gustave-Roussy, Villejuif, France Abstract XA Background and purpose: European Society for Therapeutic Radiology and Oncology (ESTRO) has set up a Quality Assurance network for radiotherapy (EQUAL) carrying out dosimetry audit. Some of the work is done in cooperation with the IAEA. The network deals with measurements performed with mailed TLD irradiated in reference and non-reference conditions, for on-axis points in photons and electrons beams. Material and methods: The LiF DTL937 (Philitech, France) was used and read with the PCL3 automatic reader (FIMEL-PTW). The participating centres irradiate the TLD capsules to an absorbed dose of 2 Gy determined with the Treatment Planning System used in clinical routine. Results: Statistical data from the participating centres on their radiotherapy structure such as number of machines and beams qualities available, dosimetry protocols and equipment in use were analysed. 23 European and 2 Mediterranean Basin countries participated. Photons beam audit: 282 centres and 757 beams have been checked; 11% 60 Co beams and 89 % of X-ray beams. Compared to the EQUAL reference dosimetry 1.4 % of the reference beam output dose values and 3% of the percentage depth doses are outside the tolerance level (deviation >±5%). The standard deviation for the reference beam output is 1.8 %. Five percent of the rectangular field dose checks and 4 % the wedge transmission factors had deviations >±5%. The analysis of the global results shows deviations >±5% in at least 1 point for 133 out of the 757 beams, mainly for large and rectangular fields and for wedged beams. At least 45 of these centres had one "real dosimetric" problem in one or more parameters, which corresponds to 7% of the checked beams. Electron beam audit: 97 centres and 277 beams have been checked. 1.0 % of the reference beam output values (field size 10 cm x 10 cm) and about 2 % of the beam output for the others field sizes (15 cm x 20 cm, and 7 cm x 7 cm) are outside tolerance level (deviation >+5%). The standard deviation for the reference beam output is 2.1% and for other field sizes about 2.4%. There are about three times more deviations outside the optimal level (> 3%) with electron beams than with photon beams. This indicates that improvements on the electron beam calibration and on the TPS algorithms for the electron beams are needed. Conclusions: The EQUAL programme shows good results for the reference beam output for photon and electron beams, which facilitate exchange of experiences between centres. The largest deviations are for non-reference geometries, which might result in some dose variations between patients in a centre treated with the same prescribed dose but with different set-ups. Keywords: Radiotherapy, Quality Assurance network, Dosimetry intercomparison, TLD Introduction ESTRO (European Society for Therapeutic Radiology and Oncology) has a Quality Assurance network (EQUAL) to check the dose on axis in reference and non-reference conditions for external radiotherapy for photon and electron beams. The external audits covered by the network are based on measurements made with mailed thermoluminescent dosimeters (TLD). The radiation-induced morbidity is related to the quality of radiotherapy treatment delivered. The EQUAL programme is therefore one of the tasks of the MORQA project funded by a EU contract (Reduction of Radiation Morbidity Through Q.A. of Dosimetry and Evaluation of Morbidity). The goal is to improve the radiotherapy in the EU countries and in particular * Supported by the Europe Against Cancer Programme of the European Union. 625
2 reduce unnecessary radiation induced complications. The present paper reports the third year's experience on photon and electron dosimetry checks Material and methods From 1998, the EQUAL Network provided dosimetry checks of Co-60 and X-ray beams (Ferreira et al, 2000, Marre et al, 2000) and from December 1999 also of electron beams. Results The figure 1 shows the number of participating centres (checked, and scheduled to be checked) and the total number of centres per country. About 50% of the eight hundred European centres have applied showing the great interest for external dosimetry audit. There are in some countries national or international programmes (IAEA/WHO) on dosimetry audit which is the reason for some of the low numbers (Thwaites et al 1992, Nisbet and Thwaites 1997). Figure 1: Percentage of centres per country that have applied to participate in EQUAL programme (data in October 2000), compared to the total number of radiotherapy centres in each country. Dosimetric results and observed deviations: Photon beams The ratios between the measured dose value Qm and that stated by the participating centre Qs were calculated for all checked parameters: reference beam output (RBO), percentage depth doses (PDD), beam output variation (BOV open and BOV Wedged) and wedge transmission factor (WTF). Definitions are given by Ferreira et al (2000). The global results for the photon beam checks are shown in the Table 1. The number of beams with deviations in each of the intervals used in the EQUAL protocol ( 3%, >3 to 5%, >5% to 10% and >10%) are reported for RBO, PDD, BOV and the WTF. A total of 6700 parameters have been checked. The values in standard characters contain all checked beams, including the beams with deviations due to a possible set-up error during the TLD irradiation. The values in bold-italic characters are the results of checked beams in an interval minus the beams with possible set-up errors in the 1st check. Set-up errors are assumed when the MU (monitor units) has not been modified between the 1 st and the 2 n d check but the deviation of the recheck measurement is inside the tolerance level (<+5 %). The global result analysis shows deviations >±5 % in at least 1 point for 133 out of the 757 beams. In these 133 rechecked beams, 88 beams had some deviations >±5 % due to set-up errors and 45 beams had "real dosimetric" problems. The set-up errors are considered as being 626
3 due to the incorrect SSD or SDD, an error on the irradiation depth, the wedge orientation or other obvious mistake during the TLD irradiation. For the reference conditions (RBO), 95 % of the results are in the optimal level of deviations (Qm/Qs < ± 3 %), 4 % are in the level between ± 3 % and ± 5 %, and only 1.4% are outside the tolerance level (Qm/Qs >± 5 %). For the percentage depth doses 90% of the checked beams are in the optimal level, 7 % have deviations between ± 3 % and ± 5 %, and 3% of the checked beams are outside the tolerance level (table 1). For the beam output variation using open beams 84%, and using wedged beams 87%, are in the optimal level, 4% (open beams) and 3% (wedged beams) are outside the tolerance level (table 1). For wedge transmission factors 81% of the results are in the optimal level and 4% are outside the tolerance level. The "dosimetric" problems concern 45 beams out of the 133 beams rechecked. A total of 7% (45/669 beams) of the checked photon beams have at least one checked parameter with "dosimetric" problems. The largest number of set-up errors is for wedged beams. Probably, this is so also in clinical practice. Table 1: Number of photons beams with deviation in different intervals. The values in standard characters contain all checked beams, including the beams with deviations due to a set-up error in the TLD irradiation. The values in bold-italic characters concern the results of checked beams minus the beams with set-up errors in the 1st check when the MU has not been modified between the 1 st and the 2nd checks. Parameters checked Reference Beam Output Percentage Depth Dose Beam Output Variation Open Beams Beam Output Variation Wedged Beams Wedge Transmission Factor < 3% 676 (90%) 637 (95%) 603 (87%) 548 (90%) 599 (84%) 529 (84%) 558 (85%) 511 (87%) 520 (78%) 475 (81%) Deviation Levels (Qm/Qs) >3 to < 5% 54 (7%) 25 (4%) 62 (9%) 45 (7%) 82(11%) 78 (12%) 73(11%) 60 (10%) 99 (15%) 85 (15%) >5to<10% 17 (2%) 5 (1%) 16 (2%) 26 (4%) 21 (3%) 14 (2%) 22 (3%) 19 (3%) >10% 10 (1%) 2 (<0.4%) 4(1%) 9 (1%) 3(1%) 15 (2%) 3(1%) 24 (4%) 5(1%) Total of Beams Dosimetric results and observed deviations: Electron Beams Since November 1999 till end of September 2000, 97 centres, out of 267 centres that have applied, and 287 beams qualities have been checked. Table 2 contains all checked electron beams, minus the beams with set-up errors in the 1st check and not yet followed up (287 beams minus 10 beams). As for the photon beam checks, the analyse of the overall results for the electron beams checks is based on the results excluding beams with set-up errors during the TLD irradiation. 86% of the reference beam output values were in the optimal level of deviation (Qm/Qs< ± 3 %), 13 % of the beams had a deviations between ± 3 % and ± 5 % and only 1 % were outside the tolerance level (Qm/Qs >± 5 %).As can be seen from Table 2 the largest deviations were for the largest field size 15 cm x 20 cm. 627
4 Table 2: Number of deviations for EQUAL electron beam outputs checks with different field sizes and SSDs. The results concern the electron beams checked minus the beams with set-up errors in the 1 st check. Reference Beam Output 10 cm x 10 cm 15 cmx20 cm 7 cm x 7 cm 10 cm x 10 cm Total (SSD > 105 cm) TLD used land All TLDs <3% 239 (86%) 212(81%) 241 (83%) 116(79%) 788 (83%) Deviation Levels (Qm/Qs) >3 to < 5% >5to< 10% 35 (13%) 3 (1%) 46 (17%) 6 (2%) 41 (15%) 4 (2%) 29 (20%) 1 (1%) 151 (16%) 14 (1%) Total of >10% beams The standard deviation for the beam output values in reference conditions (10 cm x 10 cm, at SSD 100) is 2.1% with a mean value of for Qm/Qs. The beam output for the 15 cm x 20 cm and 7 cm x 7 cm field size has a standard deviation of 2.4 % and 2.3 % respectively with a mean value of Conclusion The EQUAL network has carried out a total of 757 photon and 277 electron beam checks during the last three years. A total of 398 centres have applied to participate in the EQUAL programme (about 50 % of European Radiotherapy centres). The EQUAL programme for electron beams were initiated in November 1999 and 268 centres have already applied to participate. In the first year of the programme mostly large centres applied. Efforts were therefore made to stimulate small centres. This has resulted in a good participation also of centres with one or two radiation machines. For the photon beams in reference geometry the mean ratio of measured to stated doses is with a SD of 1.8 % and for electrons the mean value is with a SD of 2.1 %. About 7 % of the checked beams have dosimetric problems, which could have a real influence on the patient cancer treatment. Beams with dosimetric problems have been followed up and the errors have been corrected and confirmed by the rechecked measurements or on site visit performed by the EQUAL physicists. The results for the electron beam checks are very good, 98% of the beam outputs are within the tolerance level (Qm/Qs < 5%).For electron beams the number of deviations outside the optimal level are about three times that for photon beams. This difference can be explained by less accurate TPS algorithms and a larger uncertainty in the ionization chamber dosimetry procedure than for photon beams. The EQUAL programme shows that a consistent radiotherapy dosimetry for photon and electron beams can be achieved in Europe. However, a number of dosimetric problems in photons beams (7 % of the beams checked) for non-reference conditions have been discovered. Improvements on the Quality Assurance programmes by some of the centres and on the TPS algorithms are measures that could reduce the number of deviations. 628
5 Acknowledgements IAEA-CN They are very grateful to the physicists of the European centres for their participation and cooperation to the EQUAL network. The present work would not have been possible without the strong support of the ESTRO Committee for Quality Assurance and the financial help of the EU Programme "Europe Against Cancer". References [1] Marre D, Ferreira I H, Bridier A, Bjoreland A, Svensson H, Dutreix A and Chavaudra J 2000 Energy correction factors of LiF powder TLDs irradiated in high energy electron beams and applied to mailed dosimetry for Quality Assurance Networks, Phys. Med. Biol. 44, [2] Ferreira I H, Dutreix A, Bridier A, Chavaudra J and Svensson H 2000 The ESTRO- QUALity assurance network (EQUAL) Radiot. & Oncol [3] Thwaites, D.I., Williams, J.R, Aird, E.G., Klevenhagen, S.C. and Williams, P.C. A dosimetric intercomparison of megavoltage photon beams in UK radiotherapy centres. Phys. Med. Biol. 37: , [4] Nisbet, A., and Thwaites, D.I., A dosimetric intercomparison of electron beams in UK radiotherapy centres. Phys. Med. Biol. 42: , [5] Izewska, J. and Andreo, P. the IAEA/WHO postal programme for radiotherapy hospital, Radiother. Oncol ,
This article was originally published in a journal published by Elsevier, and the attached copy is provided by Elsevier for the author s benefit and for the benefit of the author s institution, for non-commercial
More informationTLD as a tool for remote verification of output for radiotherapy beams: 25 years of experience
IAEA-CN-96-82 TLD as a tool for remote verification of output for radiotherapy beams: 25 years of experience J. Francisco Aguirre, Ramesh C. Tailor, Geoffrey S. Ibbott, Marilyn Stovall and William F. Hanson
More informationZakithi Msimang SAAPMB/SARPA 2011
THE IAEA/WHO TLD POSTAL DOSE AUDIT SERVICE Zakithi Msimang SAAPMB/SARPA 2011 Introduction The idea of organizing a dosimetry audit for radiotherapy centres by the IAEA, was suggested for the first time
More informationQA for Clinical Dosimetry with Emphasis on Clinical Trials
QA for Clinical Dosimetry with Emphasis on Clinical Trials Geoffrey S. Ibbott, Ph.D. and RPC Staff G. Ibbott, AAPM Summer School, June 24, 2009 1 QA Infrastructure for Clinical Trials Participating Institutions
More informationInternational 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 informationStefan Gutiérrez Lores 1, Gonzalo Walwyn Salas 1, Daniel Molina Pérez 1, Raudel Campa Menéndez 2.
Experiences of the Secondary Standard Dosimetry Laboratory of the CPHR in the implementation and validation of the Postal Quality Audit in Radiotherapy, using TLDs Stefan Gutiérrez Lores 1, Gonzalo Walwyn
More informationIndependent corroboration of monitor unit calculations performed by a 3D computerized planning system
JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 1, NUMBER 4, FALL 2000 Independent corroboration of monitor unit calculations performed by a 3D computerized planning system Konrad W. Leszczynski* and
More informationWhat Can Go Wrong in Radiation Treatment: Data from the RPC. Geoffrey S. Ibbott, Ph.D. and RPC Staff
What Can Go Wrong in Radiation Treatment: Data from the RPC Geoffrey S. Ibbott, Ph.D. and RPC Staff Clinical NCI Trials CALGB 1768 Participating Institutions NCCTG ECOG COG ACOSOG SWOG QARC RPC ATC RTOG
More informationData 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 informationIAEA Support to Medical Physics in Africa and Latin America: achievements & challenges
IAEA Support to Medical Physics in Africa and Latin America: achievements & challenges Ahmed Meghzifene Head, Dosimetry & Medical Radiation Physics Presentation objectives To learn about: 1. IAEA activities
More informationDOSE MEASUREMENTS IN TELETHERAPY USING THERMOLUMINESCENT DOSIMETERS
Romanian Reports in Physics, Vol. 63, No. 3, P. 700 706, 2011 DOSE MEASUREMENTS IN TELETHERAPY USING THERMOLUMINESCENT DOSIMETERS ZOE GHITULESCU 1, ANA STOCHIOIU 2, MIHAI DUMITRACHE 3, 1 CNCAN- National
More informationSSDL Newsletter. Contents. From the editor. No. 51 September IAEA/WHO Network of Secondary Standards Dosimetry Laboratories
SSDL Newsletter No. 51 September 2005 IAEA/WHO Network of Secondary Standards Dosimetry Laboratories Prepared by the Joint IAEA/WHO Secretariat of the SSDL Network http://www-naweb.iaea.org/nahu/external/e3/ssdl.asp
More informationStandard calibration of ionization chambers used in radiation therapy dosimetry and evaluation of uncertainties
Standard calibration of ionization chambers used in radiation therapy dosimetry and evaluation of uncertainties A. Solimanian and M. Ghafoori * Iran. J. Radiat. Res., 2010; 8 (3): 195-199 Radiation Dosimetry
More informationAssessment 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 informationLevel of Accuracy Practically Achievable in Radiation Therapy. David Followill and RPC staff August 6, 2013
Level of Accuracy Practically Achievable in Radiation Therapy David Followill and RPC staff August 6, 2013 Sources of Treatment Uncertainty Machine functioning Radiation dose determination Patient specific
More informationD DAVID PUBLISHING. Uncertainties of in vivo Dosimetry Using Semiconductors. I. Introduction. 2. Methodology
Journal of Life Sciences 9 (2015) 120-126 doi: 10.17265/1934-7391/2015.03.005 D DAVID PUBLISHING Uncertainties of in vivo Dosimetry Using Semiconductors Zeina Al Kattar, Hanna El Balaa and Saeed Zahran
More informationThe RPC s Evaluation of Advanced Technologies. AAPM Refresher Course July 29, 2008 Geoffrey S. Ibbott, Ph.D. and RPC Staff
The RPC s Evaluation of Advanced Technologies AAPM Refresher Course July 29, 2008 Geoffrey S. Ibbott, Ph.D. and RPC Staff 1 http://rpc.mdanderson.org Supported by: NCI grants CA10953 and CA81647, and an
More informationABSTRACTS FOR RADIOTHERAPY STANDARDS USERS MEETING. 5 th June 2007
ABSTRACTS FOR RADIOTHERAPY STANDARDS USERS MEETING 5 th June 2007 An Overview of Radiotherapy Dosimetry at the NPL Hugo Palmans In relation to radiotherapy applications, The National Physical Laboratory
More informationDevelopment and prospects on dosimetry at radiotherapy levels in the Secondary Standard Dosimetry Laboratory of Cuba.
Development and prospects on dosimetry at radiotherapy levels in the Secondary Standard Dosimetry Laboratory of Cuba. Gonzalo Walwyn Salas, Stefan Gutiérrez Lores Center for Radiation Protection and Hygiene,
More informationBELdART-2: Moving towards safer radiotherapy. Steven Lelie 1,2, Wouter Schroeyers 1, Brigitte Reniers 1, Sonja Schreurs 1
BELdART-2: Moving towards safer radiotherapy Steven Lelie 1,2, Wouter Schroeyers 1, Brigitte Reniers 1, Sonja Schreurs 1 1 Nucleair Technologisch Centrum (XIOS/Uhasselt), Wetenschapspark 27, 3590 Diepenbeek
More informationAssessment 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 informationRPC s Credentialing Programs for Clinical Trials
RPC s Credentialing Programs for Clinical Trials July 19, 2010 Geoffrey S. Ibbott, Ph.D. and RPC Staff Mission The mission of the Radiological Physics Center is to assure NCI and the Cooperative Groups
More informationS. 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 informationDiode 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 informationPatient dosimetry for total body irradiation using single-use MOSFET detectors
JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 9, NUMBER 4, FALL 2008 Patient dosimetry for total body irradiation using single-use MOSFET detectors Tina Marie Briere, 1 Ramesh Tailor, 1 Naresh Tolani,
More informationAccuracy Requirements and Uncertainty Considerations in Radiation Therapy
Departments of Oncology and Medical Biophysics Accuracy Requirements and Uncertainty Considerations in Radiation Therapy Introduction and Overview 6 August 2013 Jacob (Jake) Van Dyk Conformality 18 16
More informationStandardization of dosimetry practices for small and large animal irradiation in radiobiological studies
Standardization of dosimetry practices for small and large animal irradiation in radiobiological studies Abdul Kazi, Ph.D., DABR Assistant Professor, Department of Radiation Oncology University of Maryland
More informationAn Independent Audit and Analysis of Small Field Dosimetry Quality Assurance. David Followill IROC Houston QA Center
An Independent Audit and Analysis of Small Field Dosimetry Quality Assurance David Followill IROC Houston QA Center Outline of Presentation Definition of the problem Results of audits Possible solutions
More informationPresented by: Rebecca M. Howell PhD, DABR, FAAPM. Results from Voluntary Independent External Peer Review of Beam Output
Presented by: Rebecca M. Howell PhD, DABR, FAAPM Results from Voluntary Independent External Peer Review of Beam Output What do we hope to achieve with independent peer review? Independent peer review
More informationEXPERIMENTAL 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 informationDOSIMETRIC 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 informationAnthropomorphic breast phantoms for quality assurance and dose verification
JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 5, NUMBER 1, WINTER 2004 Anthropomorphic breast phantoms for quality assurance and dose verification 1 2 3 4 José A. Bencomo, 5 Connel Chu, Victor M.
More informationThe Critical Importance of High Quality in Radiation Therapy
The Critical Importance of High Quality in Radiation Therapy Stephen F. Kry, PhD ICARO-2 Vienna June, 2017 Quality in Radiation Therapy Radiation therapy is versatile and important for many patients Intuitively,
More informationProblems and Shortcomings of the RPC Remote Monitoring Program of Institutions Dosimetry Data
Problems and Shortcomings of the RPC Remote Monitoring Program of Institutions Dosimetry Data J. A. Bencomo, N. Hernandez, and W.F. Hanson University of Texas M.D. Anderson Cancer Center Medical physics,
More informationINTRODUCTION. Material and Methods
Standard Electron Values for Varian, Siemens and Elekta (Philips) Accelerators David S. Followill, Ramesh C. Tailor, Nadia Hernandez and William F. Hanson Department of Radiation Physics The University
More informationQuality assurance in Health Services: the paradigm of radiotherapy
JBUON 2014; 19(1): 47-52 ISSN: 1107-0625, online ISSN: 2241-6293 www.jbuon.com E-mail: editorial_office@jbuon.com REVIEW ARTICLE Quality assurance in Health Services: the paradigm of radiotherapy Aristoula
More informationOverview IAEA mandate and organization. IAEA activities in medical radiation physics: achievements and challenges. Contents
activities in medical radiation physics: achievements and challenges Ahmed Meghzifene Head, Dosimetry and Medical Radiation Physics International Atomic Energy Agency Contents : an overview programme development
More informationAccreditation of Dosimetry Services
Accreditation of Dosimetry Services J. Van Cauteren, E. De Geest, M. Bricoult AV-Controlatom Content History Regulatory requirements Discussion of reference documents/standards Practical implementation
More informationReference 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 informationExperimental Evaluation of Depth Dose by Exit Surface Diode Dosimeters for Off-Axis Wedged Fields in Radiation Therapy
Iranian Journal of Medical Physics Vol. 12, No. 4, Autumn 201, 262-270 Received: August 1, 201; Accepted: March 12, 2016 Original Article Experimental Evaluation of Depth Dose by Exit Surface Diode Dosimeters
More informationDiode Dosimetric Characteristics Assessment for In-Vivo Dosimetry in Radiotherapy Treatment
Journal of Physics: Conference Series PAPER OPEN ACCESS Diode Dosimetric Characteristics Assessment for In-Vivo Dosimetry in Radiotherapy Treatment To cite this article: R Marzuki et al 2018 J. Phys.:
More informationAudits for advanced treatment dosimetry
Journal of Physics: Conference Series OPEN ACCESS Audits for advanced treatment dosimetry To cite this article: G S Ibbott and D I Thwaites 2015 J. Phys.: Conf. Ser. 573 012002 View the article online
More informationThe determination of timer error and its role in the administration of specified doses
JURNAL FIZIK MALAYSIA VOLUME 29, NUMBER 1&2 2008 The determination of timer error and its role in the administration of specified doses S. B. Samat a *, C. J. Evans b, T. Kadni c and M. T. Dolah c a School
More informationIAEA activities in Medical Physics
IAEA activities in Medical Physics Giorgia Loreti Training Officer (Medical Physics) G.Loreti@iaea.org IAEA - International Atomic Energy Agency Department of Nuclear Sciences and Applications Division
More informationDose Homogeneity of the Total Body Irradiation in vivo and in vitro confirmed with Thermoluminescent Dosimeter
Dose Homogeneity of the Total Body Irradiation in vivo and in vitro confirmed with Thermoluminescent Dosimeter E.K. Chie M.D. 1, S.W. Park M.D. 1, W.S. Kang PhD. 1,2, I.H. Kim M.D. 1,2, S.W. Ha M.D. 1,2,
More informationAn anthropomorphic head phantom with a BANG polymer gel insert for dosimetric evaluation of IMRT treatment delivery
An anthropomorphic head phantom with a BANG polymer gel insert for dosimetric evaluation of IMRT treatment delivery G. Ibbott a, M. Beach a, M. Maryanski b a M.D. Anderson Cancer Center, Houston, Texas,
More informationProtection of the contralateral breast during radiation therapy for breast cancer
Protection of the contralateral breast during radiation therapy for breast cancer Edgardo Garrigó a*, Alejandro Germanier b, Silvia Zunino a a Instituto Privado de Radioterapia, Ob Oro 423 (5000) Córdoba,
More informationRadiochromic film dosimetry in water phantoms
INSTITUTE OF PHYSICS PUBLISHING PHYSICS IN MEDICINE AND BIOLOGY Phys. Med. Biol. 46 (2001) N27 N31 www.iop.org/journals/pb PII: S0031-9155(01)16858-2 NOTE Radiochromic film dosimetry in water phantoms
More informationEDITORIAL NOTE. factor, which has been used instead of the chamber factor N D
IAEA/WHO NETWORK OF SECONDARY STANDARD DOSIMETRY LABORATORIES Prepared by the Joint IAEA/WHO Secretariat of the SSDL Network Published semi-annually by the International Atomic Energy Agency Vienna No.
More informationTHE IAEA/WHO NETWORK OF SECONDARY STANDARD DOSIMETRY LABORATORIES SSDL NETWORK CHARTER
THE IAEA/WHO NETWORK OF SECONDARY STANDARD DOSIMETRY LABORATORIES SSDL NETWORK CHARTER INTERNATIONAL ATOMIC ENERGY AGENCY VIENNA, 1999 2 FOREWORD In 1976, the International Atomic Energy Agency (IAEA)
More informationRadiation Protection Services in R.Macedonia
Radiation Protection Services in R.Macedonia Lidija Nikolovska Institute of Public Health Ionizing Radiation Laboratory Skopje, Republic of Macedonia Background - no NPP or research reactors, - limited
More informationJOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 4, NUMBER 4, FALL 2003
JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 4, NUMBER 4, FALL 2003 Reference photon dosimetry data: A preliminary study of in-air off-axis factor, percentage depth dose, and output factor of the
More informationCase histories of radiotherapy accidents & clinical consequences. Ben Mijnheer
Case histories of radiotherapy accidents & clinical consequences Ben Mijnheer Accidents happen everywhere.. Erroneous calibration, Exeter, UK, 1988 Installation of a new cobalt source A physicist calibrated
More informationMajor accidents in radiotherapy
Major accidents in radiotherapy related to treatment units (a) IAEA International Atomic Energy Agency Incorrect decay data (USA) IAEA International Atomic Energy Agency Background A cobalt unit was used
More informationResponse evaluation of CaSO4:Dy; LiF:Mg,Ti and LiF:Mg,Ti microdosimeters using liquid water phantom for clinical photon beams dosimetry
Response evaluation of CaSO4:Dy; LiF:Mg,Ti and LiF:Mg,Ti microdosimeters using liquid water phantom for clinical photon beams dosimetry Luciana C. Matsushima 1, Glauco R. Veneziani 1, Roberto K. Sakuraba
More informationU.S. DEPARTMENT OF ENERGY LABORATORY ACCREDITATION PROGRAM (DOELAP) FOR PERSONNEL DOSIMETRY SYSTEMS
U.S. DEPARTMENT OF ENERGY LABORATORY ACCREDITATION PROGRAM (DOELAP) FOR PERSONNEL DOSIMETRY SYSTEMS F. M. Cummings ^ R. D. Carlson^ R. M. Loesch INTRODUCTION Accreditation of personnel dosimetry systems
More informationVerification of performance of Acuros XB Algorithm (AXB) Implemented on Eclipse Planning System
Original Article Research in Oncology 2018; Vol. 14, No. 1: 34-38. DOI: 10.21608/resoncol.2018.3026.1047 Verification of performance of Acuros XB Algorithm (AXB) Implemented on Eclipse Planning System
More informationActivity report from JCOG physics group
2013.5.9 Global Harmonization Group meeting ICCR2013 @ Melbourne Activity report from JCOG physics group 1 Hokkaido University, Graduate School of Medicine, 2 National Cancer Center, Center for Cancer
More informationIMRT 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 informationQuality 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 informationTesting of the Implementation of the Code of Practice on Dosimetry in X-ray Diagnostic Radiology Hungarian Contribution
Testing of the Implementation of the Code of Practice on Dosimetry in X-ray Diagnostic Radiology Hungarian Contribution Ferenc Giczi a*, Sándor Pellet b, Ian Donald McLean c and Ahmed Meghzifene c a Széchenyi
More informationOrigin, funding & collaboration
UK Brachytherapy Audit: Origin, funding & collaboration Tony Palmer OVERVIEW Purpose From idea to implementation Methodology, results & reflection Proposal for a Brachytherapy Audit Modern brachytherapy
More informationAli S. Meigooni, Kai Dou, Navid J. Meigooni, Michael Gnaster, Shahid Awan, Sharifeh Dini, and Ellis L. Johnson
Dosimetric Characteristics of a Newly Designed Grid Block for Megavoltage Photon Radiation and Its Therapeutic Advantage Using A Linear Quadratic Model Ali S. Meigooni, Kai Dou, Navid J. Meigooni, Michael
More informationVerification 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 informationFirst application of hemi-body electron beam irradiation for Kaposi sarcoma at the lower extremities
JBUON 2018; 23(1): 268-272 ISSN: 1107-0625, online ISSN: 2241-6293 www.jbuon.com E-mail: editorial_office@jbuon.com SHORT COMMUNICATION First application of hemi-body electron beam irradiation for Kaposi
More informationTopics 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 informationLONG TERM STABILITY OF THE PERFORMANCE OF A CLINICAL LINEAR ACCELERATOR AND Z-SCORE ASSESSEMENT FOR ABSORBED DOSE TO WATER QUANTITY
LONG TERM STABILITY OF THE PERFORMANCE OF A CLINICAL LINEAR ACCELERATOR AND Z-SCORE ASSESSEMENT FOR ABSORBED DOSE TO WATER QUANTITY E. BADITA 1, C.VANCEA 1,3, I. CALINA 1,3, D. STROE 2, M. DUMITRACHE 2,3,
More informationQuality Assurance in Radiation Therapy
Quality Assurance in Radiation Therapy Purpose (from George) To make aware of the needs for quality assurance in radiation therapy To identify components of a quality assurance program in radiation therapy
More informationCalibration of two 90 Sr+ 90 Y dermatological applicators
Calibration of two 90 Sr+ 90 Y dermatological applicators Patrícia L. Antonio *, Linda V. E. Caldas Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP Av. Prof. Lineu Prestes 2242, 05508-000,
More informationMeasurement of Scattered Radiation Dose to The Eyes, Breasts and Gonads of Patients During External Beam Radiation Therapy.
Measurement of Scattered Radiation Dose to The Eyes, Breasts and Gonads of Patients During External Beam Radiation Therapy. Elumelu-Kupoluyi T. N., Akinlade B. I., Abdus-salam A. A. and Adenipekun A. A.
More informationSUMMARY OF PERSONAL DOSIMETRY PRACTICIES IN RCA MEMBER COUNTRIES
A Personal Dosimetry Intercomparison Study in Asian and Pacific Region Hiroyuki MURAKAMI and Fumiaki TAKAHASHI Department of Health Physics, Japan Atomic Energy Research Institute and Richard V. Griffith
More informationIGRT1 technologies. Paweł Kukołowicz Warsaw, Poland
IGRT1 technologies Paweł Kukołowicz Warsaw, Poland Minimal prerequisite for good, efficient radiotherapy ICTP 2015 Paweł Kukołowicz 2/29 Minimal prerequisite for good, efficient radiotherapy Well trained
More informationMEASUREMENT OF THE EQUIVALENT INDIVIDUAL DOSES FOR PATIENTS IN ANGIOGRAPHY PROCEDURE AND INTERVENTIONAL RADIOLOGY WITH THERMOLUMINESCENT SYSTEMS
RADIOPROTECTION AND DOSIMETRY MEASUREMENT OF THE EQUIVALENT INDIVIDUAL DOSES FOR PATIENTS IN ANGIOGRAPHY PROCEDURE AND INTERVENTIONAL RADIOLOGY WITH THERMOLUMINESCENT SYSTEMS DANIELA ADAM 1, ANA STOCHIOIU
More informationA computer-aided diagnostic scheme for classification of clustered microcalcifications in mammograms
ABSTRACTS OF RECENT Ph.D. THESES PERTINENT TO MEDICAL PHYSICS Appropriate thesis abstracts for this section should be submitted to Professor John Cameron, c/o Medical Physics, One Physics Ellipse, College
More informationBrachytherapy Planning and Quality Assurance
Brachytherapy Planning and Quality Assurance Classical implant systems Most common clinical applications and modern dosimetry methods Quality assurance Classical implant systems Manchester (Paterson-Parker)
More informationIntensity Modulated Radiation Therapy: Dosimetric Aspects & Commissioning Strategies
Intensity Modulated Radiation Therapy: Dosimetric Aspects & Commissioning Strategies ICPT School on Medical Physics for Radiation Therapy Justus Adamson PhD Assistant Professor Department of Radiation
More informationAdvanced film dosimetry for a UK brachytherapy audit
Advanced film dosimetry for a UK brachytherapy audit Tony Palmer Lead Scientist Medical Physics, Portsmouth Hospitals NHS Trust, UK University of Surrey, UK Institute of Physics and Engineering in Medicine
More informationPMP. Use of Cylindrical Chambers as Substitutes for Parallel- Plate Chambers in Low-Energy Electron Dosimetry. Original Article.
Original Article PMP Progress in Medical Physics 29(1), March 218 https://doi.org/1.14316/pmp.218.29.1.16 pissn 258-4445, eissn 258-4453 Use of Cylindrical Chambers as Substitutes for Parallel- Plate Chambers
More informationQuality 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 informationIROC Liver Phantom. Guidelines for Planning and Irradiating the IROC Liver Phantom. Revised July 2015
IROC Liver Phantom Guidelines for Planning and Irradiating the IROC Liver Phantom. Revised July 2015 The study groups are requests that each institution keep the phantom for no more than 2 weeks. During
More informationEffective and efficient radiotherapy dosimetry audit: Where to next?
Effective and efficient radiotherapy dosimetry audit: Where to next? Catharine Clark, Eduard Gershkevitsh, Milan Tomsej and Nuria Jornet National Physical Laboratory Royal Surrey County Hospital Radiotherapy
More informationX-RAYS INDIVIDUAL DOSE ASSESSMENT USING TLD DOSIMETERS
X-RAYS INDIVIDUAL DOSE ASSESSMENT USING TLD DOSIMETERS Carlos Salas Nucleoeléctrica Argentina SA - Embalse NPP Environmental Control and Dosimetry Division INTRODUCTION: This paper describes the methodology
More informationRadiologic Units: What You Need to Know
Radiologic Units: What You Need to Know TODD VAN AUKEN M.ED. RT (R)(MR) Agenda Greys, Sieverts, Coulombs per kg, & Becquerel's Conventional Units Other Concepts (LET, Q-Factor, Effective Dose, NCRP Report
More informationStrategic Research Agenda of EURAMED, highlighting synergies
Strategic Research Agenda of EURAMED, highlighting synergies Christoph Hoeschen Otto-von-Guericke University Magdeburg on behalf of the steering committee The Strategic Research Agenda Common Strategic
More informationComparison 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 informationEvaluation of Dosimetry Check software for IMRT patient-specific quality assurance
JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 16, NUMBER 3, 2015 Evaluation of Dosimetry Check software for IMRT patient-specific quality assurance Ganesh Narayanasamy, Travis Zalman, Chul S. Ha,
More informationCalibration 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 informationAtoms for Health. Atoms for Health The. Atoms for Health - Division of Nuclear Health - Dept of Nuclear Aplications P Andreo DIR-NAHU 1
International Atomic Energy Agency Atoms for Health The human side of nuclear applications NUCLEAR APPLICATIONS IN HEALTH A UNIQUE MANDATE OF THE UN SYSTEM The Agency shall seek to accelerate and enlarge
More informationGuideline & Reports 医学物理学会教育委員会資料
Guideline & Reports 医学物理学会教育委員会資料 2017/11 更新 report title year keyword 1 keyword 2 AAPM TG211 Classification and evaluation strategies of auto-segmentation approaches for PET 2017 PET autosegmentation
More informationBrachytherapy Planning and Quality Assurance w Classical implant systems and modern computerized dosimetry w Most common clinical applications w
Brachytherapy Planning and Quality Assurance w Classical implant systems and modern computerized dosimetry w Most common clinical applications w Quality assurance Classical implant systems w Manchester
More informationRADIATION 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 informationQuality Assurance of a 50-kV Radiotherapy Unit Using EBT3 GafChromic Film: A Feasibility Study
Radiotherapy Quality Assurance of a 50-kV Radiotherapy Unit Using EBT3 GafChromic Film: A Feasibility Study Technology in Cancer Research & Treatment 2016, Vol. 15(1) 163 170 ª The Author(s) 2015 Reprints
More informationStrengthening Activity Measurement Quality in Radiation Protection from Metrological Science to Reliable End-user Application
Strengthening Activity Measurement Quality in Radiation Protection from Metrological Science to Reliable End-user Application Franz Josef Maringer a,b,c*, Robert Brettner-Messler a, Michael Kreuziger a
More informationIN VIVO DOSIMETRY MEASUREMENTS FOR BREAST RADIATION TREATMENTS
Romanian Reports in Physics, Vol. 64, No. 3, P. 728 736, 2012 MEDICAL PHYSICS IN VIVO DOSIMETRY MEASUREMENTS FOR BREAST RADIATION TREATMENTS G. VASILE 1,3, MADALINA VASILE 2,3, O.G. DULIU 3 1 Center of
More informationThe clinical use of OSLD
The clinical use of OSLD Stephen F. Kry PhD Radiological Physics Center, Imaging and Radiation Oncology Core - Houston IROC Houston The University of Texas MD Anderson Cancer Center, Houston, TX Spring
More informationCalibration of Radiation Instruments Used in Radiation Protection and Radiotherapy in Malaysia
Abstract Calibration of Radiation Instruments Used in Radiation Protection and Radiotherapy in Malaysia Taiman Bin Kadni (taiman@mint.gov.my) Secondary Standard Dosimetry Laboratory (SSDL) Malaysian Institute
More informationDosimetric Consideration in Diagnostic Radiology
Dosimetric Consideration in Diagnostic Radiology Prof. Ng Kwan-Hoong Department of Biomedical Imaging University of Malaya ngkh@um.edu.my Radiation Dosimetry Workshop, 28-29 March 2014 2 Why do we measure
More informationIAEA SUBPROGRAMME ON DOSIMETRY AND MEDICAL RADIATION PHYSICS (DMRP) REPORT ON ACTIVITIES,
IAEA SUBPROGRAMME ON DOSIMETRY AND MEDICAL RADIATION PHYSICS (DMRP) REPORT ON ACTIVITIES, 2001 2002 K Shortt, A Meghzifene, J Izewska, F Pernicka, H Tölli, S Vatnitsky, P Bera, L Czap, R Girzikowsky Dosimetry
More informationVerification 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