Development of Collision-Detection Methods for a 5-axis Gamma-Camera Calibration System

Matthew A. Kupinski, Owen Anderson, Lars Furenlid, William Worstell, Yuemeng Feng, Hamid Sabet

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

Abstract

A pinhole-based cardiac SPECT imaging system is currently being developed at Massachusetts General Hospital/Harvard Medical School that utilizes scintillation crystals that have laser-induced optical barriers to guide the light based on the position and orientation of each pinhole. This unique crystal geometry presents a calibration challenge as the calibration of the incident gamma-rays must be both position and orientation controlled. We have previously developed and presented a 5-axis calibration system to account for the 3 linear axes (x, y, and z) as well as two orientation axes (theta and phi) that utilize a collimated source of gamma-rays to calibrate such segmented crystal camera systems. However, one of the challenges of such a system is to move the stages in such a way as to avoid collisions with the crystal face. Such collisions could likely damage the crystal or the acquisition system itself. We have developed a collision-detection system that utilizes the accurate 3D CAD models of the calibration-state system to precisely determine when a collision is going to occur. Thus, potential stage motions can be vetted through the collision model to determine if any collisions will occur or not and corrections can be made to the motion profiles to avoid collisions with sensitive hardware components.

Original languageEnglish (US)
Title of host publication2022 IEEE NSS/MIC RTSD - IEEE Nuclear Science Symposium, Medical Imaging Conference and Room Temperature Semiconductor Detector Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665488723
DOIs
StatePublished - 2022
Event2022 IEEE Nuclear Science Symposium, Medical Imaging Conference, and Room Temperature Semiconductor Detector Conference, IEEE NSS MIC RTSD 2022 - Milano, Italy
Duration: Nov 5 2022Nov 12 2022

Publication series

Name2022 IEEE NSS/MIC RTSD - IEEE Nuclear Science Symposium, Medical Imaging Conference and Room Temperature Semiconductor Detector Conference

Conference

Conference2022 IEEE Nuclear Science Symposium, Medical Imaging Conference, and Room Temperature Semiconductor Detector Conference, IEEE NSS MIC RTSD 2022
Country/TerritoryItaly
CityMilano
Period11/5/2211/12/22

Keywords

  • cardiac SPECT
  • Gamma camera calibration

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiology Nuclear Medicine and imaging
  • Instrumentation
  • Nuclear and High Energy Physics

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