1. The Effects of Compton Camera Data Acquisition and Readout Timing on PG Imaging for Proton Range Verification
- Author
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S Peterson, Paul Maggi, Jerimy C. Polf, Dennis Stephen Mackin, Sam Beddar, and Rajesh Panthi
- Subjects
Physics ,Range (particle radiation) ,Proton ,Physics::Instrumentation and Detectors ,business.industry ,Compton camera ,Article ,Atomic and Molecular Physics, and Optics ,Imaging phantom ,Optics ,Data acquisition ,Quality (physics) ,Radiology, Nuclear Medicine and imaging ,business ,Instrumentation ,Reset (computing) ,Beam (structure) - Abstract
The purpose of this study was to determine how the characteristics of the data acquisition (DAQ) electronics of a Compton camera (CC) affect the quality of the recorded prompt gamma (PG) interaction data and the reconstructed images, during clinical proton beam delivery. We used the Monte-Carlo-plus-Detector-Effect (MCDE) model to simulate the delivery of a 150 MeV clinical proton pencil beam to a tissue-equivalent plastic phantom. With the MCDE model we analyzed how the recorded PG interaction data changed as two characteristics of the DAQ electronics of a CC were changed: (1) the number of data readout channels; and (2) the active charge collection, readout, and reset time. As the proton beam dose rate increased, the number of recorded PG single-, double-, and triple-scatter events decreased by a factor of 60× for the current DAQ configuration of the CC. However, as the DAQ readout channels were increased and the readout/reset timing decreased, the number of recorded events decreased by
- Published
- 2022
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