Calibration and Processing of a Waveform MDRF for a Clinical Gamma Camera

Neil Momsen, Lars R. Furenlid

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A classic clinical gamma camera was reverse engineered and retrofitted for the use of time dependent waveform maximum-likelihood techniques for the task of gamma-ray event parameter estimation. The original detector electronics were outfitted with tap-in circuit boards that intercept the photomultiplier tube (PMT) signals. These amplifiers send the temporal PMT voltage signal to off-camera 12-bit waveform digitizers. To include the temporal waveform data into the maximum-likelihood estimation of gamma-ray event parameters, waveform Mean Detector Response Functions (MDRF) are necessary. The collection of this MDRF differs substantially from conventional MDRFs because additional high-speed acquisition electronics must be used. The MDRF calibration requires 3 main processing steps which are done with a conventional MDRF: a spectral filter; a smoothing/fitting step; and a position-estimation filter. The waveform MDRF information can then be extracted from this result by tracking which events are filtered out from the dataset.

Original languageEnglish (US)
Title of host publication2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728141640
DOIs
StatePublished - Oct 2019
Event2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019 - Manchester, United Kingdom
Duration: Oct 26 2019Nov 2 2019

Publication series

Name2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019

Conference

Conference2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019
CountryUnited Kingdom
CityManchester
Period10/26/1911/2/19

ASJC Scopus subject areas

  • Signal Processing
  • Radiology Nuclear Medicine and imaging
  • Nuclear and High Energy Physics

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    Momsen, N., & Furenlid, L. R. (2019). Calibration and Processing of a Waveform MDRF for a Clinical Gamma Camera. In 2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019 [9059790] (2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSS/MIC42101.2019.9059790