New Treatment Research Facility Project at HIMAC
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1 New Treatment Research Facility Project at Koji Noda Research Center for Charged Particle Therapy National Institute of Radiological Sciences IPAC10, Kyoto, JAPAN, 25th May, 2010
2 Contents 1. Introduction 2. Design and specifications 3. Overview of project status 4. Summary
3 Introduction Physical Advantage of Heavy Ion High longitudinal dose localization due to the Bragg peak. 5 4 Lateral biological dose distribution C proton Relative dose (%) Dose (GyE) lateral position (cm) Depth in water (cm) C ion n gam m a-ray proton High transverse dose localization due to the low scattering.
4 Biological Advantage Introduction RBE,O E R H RBE OER C Si LET LET (kev (kev/μm) /μ) LET dependence on RBE, OER Biological Dose (GyE) Biological Depth-Dose Distribution of 6cm SOBP Normal tissue Tumor Depth in Water He C Ne Proton
5 Milestone of Radiotherapy Introduction 1984: Heavy ion therapy project started under National Comprehensive 10-year Strategy for Cancer Control : Construction of : Carbon-ion RT started at 21 st June : approved Highly Advanced Medical Technology : Design and R&D for Downsized C-ion RT Facility : Construction of Pilot Facility at Gunma Uni : 1 st Patient treated at Gunma at 16 th March : New Treatment Research Facility Project for further development of treatment.
6 Introduction facility Ion species: High LET (100keV/μm) charged particles He, C, Ne, Si, Ar Range: 30cm in soft tissue 800MeV/u (Si) Maximum irradiation area: 22cmΦ Dose rate: 5Gy/min Beam direction: horizontal, vertical (Heavy Ion Medical Accelerator in Chiba)
7 Milestone of Radiotherapy Introduction 1984: Heavy ion therapy project started under National Comprehensive 10-year Strategy for Cancer Control : Construction of : Carbon-ion RT started at 21 st June : approved Highly Advanced Medical Technology : Design and R&D for Downsized C-ion RT Facility : Construction of Pilot Facility at Gunma Uni : 1 st Patient treated at Gunma at 16 th March : New Treatment Research Facility Project for further development of treatment.
8 Progress of treatment number Introduction Num of Treatments Treatment Period: 43 wks 1st Term(Apr Aug): 18.5wks 2nd Term(Sept Feb):24.5wks Treatment: 4 days per week FY
9 Milestone of Radiotherapy Introduction 1984: Heavy ion therapy project started under National Comprehensive 10-year Strategy for Cancer Control : Construction of : Carbon-ion RT started at 21 st June : approved Highly Advanced Medical Technology : Design and R&D for Downsized C-ion RT Facility : Construction of Pilot Facility at Gunma Uni : 1 st Patient treated at Gunma at 16 th March : New Treatment Research Facility Project for further development of treatment.
10 4. Compact Facility Gunma University Heavy-Ion Medical Center Treatment Room Synchrotron 10Ghz-ECR Injector Linac APF-IH
11 Milestone of Radiotherapy Introduction 1984: Heavy ion therapy project started under National Comprehensive 10-year Strategy for Cancer Control : Construction of : Carbon-ion RT started at 21 st June : approved Highly Advanced Medical Technology : Design and R&D for Downsized C-ion RT Facility : Construction of Pilot Facility at Gunma Uni : 1 st Patient treated at Gunma at 16 th March : New Treatment Research Facility Project for further development of treatment.
12 Introduction Motivation therapy needs to be upgraded. Upgrading irradiation system - raster scanning system - rotating gantry system Upgrading control system Upgrading patient handling system Upgrading treatment planning system Further development of heavy-ion therapy - Adaptive therapy - Intensity modulated Ion Therapy (IMIT) New facility Hospital New treatment facility project
13 Introduction Motivation ~ adaptive therapy Intra & interfractional changes from time resolved imaging (seconds to days) using CT/FPD devices could be feed-back to the treatment planning. The rich information could extend to replan, 4D plan and patient registration etc.
14 Introduction Motivation ~ IMIT IMIT plan example 0 deg 0 d e g Gantry with 3D scanning makes it possible to realize Intensity Modulated Ion Therapy (IMIT). 288 deg 72 deg Volume [%] PTV IMIT PTV Sngl GTV IMIT GTV Sngl CRD IMIT CRD Sngl Dose [%] 216 deg 144 deg - Improved dose conformity and steeper dose gradients - Further reduction of integral dose - Less sensitivity to range uncertainties and other sources of uncertainty
15 Contents 1. Introduction 2. Design and specifications 3. Overview of project status 4. Summary
16 Design & Spec Design and specifications New facility 1. Ion species: 12C, 16O (11C, 15O) 2. Irradiation method: Hybrid raster scanning 3. Range: ~ 30cm in water 4. Maximum irradiation area: 22cm square 5. Delivered Intensity: pps (for C ions) 6. Treatment rooms: 3 = 2 H&V + 1 rotating gantry
17 3D Scanning Method R&D Work Adaptive Therapy by 3D Scanning 1) Beam utilization efficiency 100% 2) Irradiation on irregular shape target 3) No bolus & collimator 1) Sensitive beam error 2) Longer irradiation time 3) Sensitive to organ motion Scanner Monitor Range Shifter Beam Dose distribution of pencil beam
18 3D Scanning Method R&D Work Adaptive Therapy by 3D Scanning Rescanning with Gated Irradiation ) Beam utilization efficiency 100% -40 2) Irradiation on irregular shape target 3) No bolus &-20 collimator ) Sensitive beam 0 error 2) Longer irradiation time 20 3) Sensitive to organ motion 40 Scanner Monitor Range 1.1 Shifter 1.1 Beam Dose distribution of pencil beam
19 Fast 3D Scanning Design & Spec In order to realize the rescanning with gating within acceptable irradiation time, we have studied following strategy. 1. Treatment planning for fast scanning 5 2. Modification of acc. operation 2 3. Fast scanning magnet times speed up!! (A) 50 y (m m ) x (m m ) 50 (B) (C)
20 Design & Spec Fast scanning system 3D scanning irradiation Max field size 220 mm 2 Max SOBP 150 mm Max energy 430 MeV/u Moving target OK beam size 3~6 mm (1σ) Ene. change RSF Design and R&D work were carried out. Vertical line Horizontal line Room E Beam test : Dec ~ Feb. 2010
21 Design & Spec Fast scanning system Design and R&D work were carried out. Vertical line Horizontal line Room E Beam test : Dec ~ Feb. 2010
22 Design & Spec Fast scanning system Design and R&D work were carried out. Vertical line Scanning Magnet Horizontal line Room E Beam test : Dec ~ Feb. 2010
23 Design & Spec Fast scanning system Design and R&D work were carried out. Vertical line Pos. Moni. Horizontal line Dose Moni Room E Beam test : Dec ~ Feb. 2010
24 Design & Spec Fast scanning system Design and R&D work were carried out. Vertical line Range Shifter Horizontal line Room E Beam test : Dec ~ Feb. 2010
25 Design & Spec Gantry design 1) IMIT 2) Reduction of Patient s Load 3D scanning irradiation Max field size 150 mm 2 Max SOBP 150 mm Max energy 430 MeV/u Moving target OK beam size 3~6 mm (1σ) Ene. change RSF Total weight 350 ton
26 Design & Spec Floor plan Treatment rooms : 3 Simulation rooms : 2 Preparation rooms: 6
27 Contents 1. Introduction 2. Design and specifications 3. Overview of project status 4. Summary
28 Building Overview Mar. 2010, new treatment building construction has been completed.
29 Building Overview April, 2010 Mar. 2010, new treatment building construction has been completed.
30 Overview Treatment room / Simulation room Simulation room Treatment room
31 Overview Treatment room / Simulation room Simulation room Treatment room April, 2010
32 Overview Treatment Hall Entrance Preparation room
33 Overview Treatment Hall Entrance Preparation room
34 Overview Beam line devices Beam line dipole magnet Quadrupole magnet Installation of devices is in progress.
35 Contents 1. Introduction 2. Design and specifications 3. Overview of project status 4. Summary
36 Summary Summary Construction of the building is completed. Performance of 3D rescanning is verified. Installation & commissioning will be carried out in this year. First patient is scheduled in next March.
37 Acknowledgement Thank you for your attention
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