TY - GEN
T1 - Development of Collision-Detection Methods for a 5-axis Gamma-Camera Calibration System
AU - Kupinski, Matthew A.
AU - Anderson, Owen
AU - Furenlid, Lars
AU - Worstell, William
AU - Feng, Yuemeng
AU - Sabet, Hamid
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - 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.
AB - 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.
KW - Gamma camera calibration
KW - cardiac SPECT
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U2 - 10.1109/NSS/MIC44845.2022.10399040
DO - 10.1109/NSS/MIC44845.2022.10399040
M3 - Conference contribution
AN - SCOPUS:85185373741
T3 - 2022 IEEE NSS/MIC RTSD - IEEE Nuclear Science Symposium, Medical Imaging Conference and Room Temperature Semiconductor Detector Conference
BT - 2022 IEEE NSS/MIC RTSD - IEEE Nuclear Science Symposium, Medical Imaging Conference and Room Temperature Semiconductor Detector Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE Nuclear Science Symposium, Medical Imaging Conference, and Room Temperature Semiconductor Detector Conference, IEEE NSS MIC RTSD 2022
Y2 - 5 November 2022 through 12 November 2022
ER -