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Proceedings Paper

System integration for a SPECT system featuring digital waveform acquisition
Author(s): Neil Momsen; Garrett Richards; Lars R. Furenlid
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Paper Abstract

We have developed a preclinical rabbit cardiac SPECT system by re-engineering a classical clinical SPECT scanner with state-of-the-art electronics and control systems. Notable features include digital waveform capture of the time-dependent outputs of the photomultiplier tubes (PMT). The digitization of the scintillation pulses allows for the incorporation of the entire waveform into the maximum-likelihood estimation (MLE) of event parameters (x, y, energy, etc.), rather than one scalar (i.e. integrated current). We present here details of the waveform-inclusive MLE, the measurements of the mean-detector-response functions, and the determination of the point spread function, along with the associated acceleration via graphics-processor-unit (GPU) programming. Additionally, calibration algorithms of the system are discussed.

Paper Details

Date Published: 18 September 2018
PDF: 6 pages
Proc. SPIE 10763, Radiation Detectors in Medicine, Industry, and National Security XIX, 1076304 (18 September 2018); doi: 10.1117/12.2326512
Show Author Affiliations
Neil Momsen, College of Optical Sciences, The Univ. of Arizona (United States)
The Univ. of Arizona (United States)
Garrett Richards, College of Optical Sciences, The Univ. of Arizona (United States)
The Univ. of Arizona (United States)
Lars R. Furenlid, College of Optical Sciences, The Univ. of Arizona (United States)
The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 10763:
Radiation Detectors in Medicine, Industry, and National Security XIX
Gary P. Grim; Lars R. Furenlid; H. Bradford Barber; Jeffrey A. Koch, Editor(s)

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