SU-E-J-121: Measuring Prompt Gamma Emission Profiles with a Multi-Stage Compton Camera During Proton Beam Irradiaition: Initial Studies

2014 ◽  
Vol 41 (6Part8) ◽  
pp. 183-183
Author(s):  
J Polf ◽  
S Brown ◽  
J Mann ◽  
D Mackin ◽  
Y Zheng ◽  
...  
Keyword(s):  
Proton Beam ◽  
Prompt Gamma ◽  
Gamma Emission ◽  
Compton Camera ◽  
Multi Stage

scholarly journals Progress towards a semiconductor Compton camera for prompt gamma imaging during proton beam therapy for range and dose verification

2018 ◽  
Vol 13 (01) ◽  
pp. C01036-C01036 ◽  
Author(s):  
A. Gutierrez ◽  
C. Baker ◽  
H. Boston ◽  
S. Chung ◽  
D.S. Judson ◽  
...  
Keyword(s):  
Proton Beam ◽  
Proton Beam Therapy ◽  
Prompt Gamma ◽  
Dose Verification ◽  
Compton Camera ◽  
Gamma Imaging ◽  
Prompt Gamma Imaging

scholarly journals Material efficiency studies for a Compton camera designed to measure characteristic prompt gamma rays emitted during proton beam radiotherapy

2011 ◽  
Vol 56 (10) ◽  
pp. 3047-3059 ◽  
Author(s):  
Daniel Robertson ◽  
Jerimy C Polf ◽  
Steve W Peterson ◽  
Michael T Gillin ◽  
Sam Beddar
Keyword(s):  
Proton Beam ◽  
Gamma Rays ◽  
Prompt Gamma ◽  
Compton Camera ◽  
Proton Beam Radiotherapy ◽  
Material Efficiency

scholarly journals Carbon range verification with 718 keV Compton imaging

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Raj Kumar Parajuli ◽  
Makoto Sakai ◽  
Kazuo Arakawa ◽  
Yoshiki Kubota ◽  
Nobuteru Kubo ◽  
...  
Keyword(s):  
Real Time ◽  
Radiation Treatment ◽  
Projection Methods ◽  
Peak Position ◽  
Ion Beams ◽  
Prompt Gamma ◽  
Gamma Emission ◽  
Compton Camera ◽  
Carbon Ion ◽  
Peak Intensity

AbstractCarbon ion radiotherapy is a sophisticated radiation treatment modality because of its superiority in achieving precise dosage distribution and high biological effectiveness. However, there exist beam range uncertainties that affect treatment efficiency. This problem can be resolved if the clinical beam could be monitored precisely in real-time, such as by imaging the prompt gamma emission from the target. In this study, we performed real-time detection and imaging of 718 keV prompt gamma emissions using a Si/CdTe Compton camera. We conducted experiments on graphite phantoms using clinical carbon ion beams of 290 MeV/u energy. Compton images were reconstructed using simple back-projection methods from the energy events of 718 keV prompt gamma emissions. The peak intensity position in reconstructed 718 keV prompt gamma images was few millimeters below the Bragg peak position. Moreover, the dual- and triple-energy window images for all positions of phantoms were not affected by scattered gammas, and their peak intensity positions were approximately similar to those observed in the reconstructed 718 keV prompt gamma images. In conclusion, the findings of the current study demonstrate the feasibility of using our Compton camera for real-time beam monitoring of carbon ion beams under clinical beam intensity.

scholarly journals A Study of The Clinical Viability of A Prototype Compton Camera for Prompt Gamma Imaging Based Proton Beam Range Verification

2021 ◽  
Author(s):  
Jerimy Polf ◽  
Carlos A. Barajas ◽  
Gerson C. Kroiz ◽  
Stephen W. Peterson ◽  
Paul Maggi ◽  
...  
Keyword(s):  
Proton Beam ◽  
Prompt Gamma ◽  
Reconstruction Algorithms ◽  
Compton Camera ◽  
Detection Rates ◽  
Proton Beams ◽  
Proton Beam Radiotherapy ◽  
Beam Range ◽  
Range Verification

Abstract We present Compton camera (CC) based PG imaging for proton range verification at clinical dose rates. PG emission from a tissue-equivalent phantom during irradiation with clinical proton beams was measured with a prototype CC. Images were reconstructed of the raw measured data and of data processed with a neural network (NN) trained to identify “true” and “false” PG events. From these images, we determine if PG images produced by the prototype CC could provide clinically useful information about the in vivo range of the proton beams delivered during proton beam radiotherapy. NN processing of the data was found necessary to allow identification of the proton beam path from the PG images. Furthermore, to allow the localization of the end of the proton beam range with a precision of ≤ 3mm with the prototype CC, ~1 x 109 protons would need to be delivered, which is on the order of magnitude delivered for a standard proton radiotherapy treatment field. To obtain higher precision in beam range determination and to allow imaging a single proton pencil beam delivered within the full treatment field, further improvements in PG detection rates by the CC, NN data processing, and image reconstruction algorithms are needed.

Impact of prompt gamma emission of 44Sc on quantification in preclinical and clinical PET systems

2021 ◽  
Vol 170 ◽  
pp. 109599
Author(s):  
Florian Rosar ◽  
Hendrik Bohnenberger ◽  
Euy Sung Moon ◽  
Frank Rösch ◽  
Achim Denig ◽  
...  
Keyword(s):  
Prompt Gamma ◽  
Gamma Emission

scholarly journals Spectroscopic Compton imaging of prompt gamma emission at the MeV energy range

2018 ◽  
Vol 318 (1) ◽  
pp. 241-246 ◽  
Author(s):  
Haijian Chen ◽  
Huaiyu H. Chen-Mayer ◽  
Danyal J. Turkoglu ◽  
Benjamin K. Riley ◽  
Emily Draeger ◽  
...  
Keyword(s):  
Energy Range ◽  
Prompt Gamma ◽  
Gamma Emission ◽  
Compton Imaging
Sign in / Sign up

Export Citation Format

Share Document