Design Study of the Absorber Detector of a Compton Camera for On-line Control in Ion Beam Therapy

被引：0

作者：

Richard, M. -H. ^{[1
,2
,3
,4
]}

Dahoumane, M. ^{[1
,2
,3
]}

Dauvergne, D. ^{[1
,2
,3
]}

Dedes, G. ^{[1
,2
,3
]}

De Rydt, M. ^{[1
,2
,3
]}

Freud, N. ^{[1
,4
]}

Letang, J. M. ^{[1
,4
]}

Lojacono, X. ^{[1
,4
]}

Krimmer, J. ^{[1
,2
,3
]}

Maxim, V. ^{[1
,4
]}

Montarou, G. ^{[5
,6
]}

Ray, C. ^{[1
,2
,3
]}

Roellinghoff, F. ^{[1
,4
]}

Testa, E. ^{[1
,2
,3
]}

Walenta, A. H. ^{[1
,2
,3
]}

机构：

[1] Univ Lyon, F-69622 Villeurbanne, France

[2] Univ Lyon 1, F-69622 Villeurbanne, France

[3] CNRS IN2P3, IPNL, UMR 5822, F-69622 Villeurbanne, France

[4] Univ Lyon 1, CNRS, INSERM,UlO44, INSA Lyon,Ctr Leon Berard,CREATIS,UMR 5220, F-69622 Villeurbanne, France

[5] Univ Clermont Ferrand 2, F-63177 Clermont Ferrand, France

[6] CNRS IIN2P3, LPC Clermont, UMR 6533, F-63177 Aubiere, France

来源：

2011 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC) | 2011年

关键词：

Compton camera; hadrontherapy; ion beam therapy; prompt gamma; Geant4; LaBr3; NaI; LYSO;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In order to take advantage of the assets of ion irradiation, the position of the Bragg peak has to be monitored accurately. Here we propose a technique relying on the detection of the prompt gamma with a Compton camera. We reconstruct analytically the prompt-gamma emission points by intersecting the ion trajectories given by a beam hodoscope and the Compton cones reconstructed with the camera. For the Compton camera, we investigate the use of a stack of 2 mm thick silicon strip detectors as a scatterer and one scintillator as an absorber. The response of the Compton camera to a photon point source with a realistic spectrum (corresponding to the prompt-gamma spectrum emitted during the carbon irradiation of a water phantom) is studied. The goal of this study is to tune the design of the absorber detector. First the absorber detector dimensions are optimized. Then we compare the performances of three scintillators : LYSO, NaI and LaBr3. Finally, we study the influence of the spatial and energy resolutions of the absorber detector.

引用

页码：3496 / 3500

页数：5

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