TY - GEN
T1 - A 5-Axis Calibration Stage for Depth-of-Interaction-Correcting Scintillation Crystals
AU - Anderson, Owen
AU - Bläckberg, Lisa
AU - Sajedi, Salar
AU - Sabet, Hamid
AU - Furenlid, Lars R.
N1 - Funding Information:
Manuscript received on 20 December, 2020. This work was supported by the National Institute of Health Grant 1R01HL145160-01 ”High performance SPECT System for Cardiac Imaging”.
Publisher Copyright:
© 2020 IEEE
PY - 2020
Y1 - 2020
N2 - New laser-induced optical-barrier technology designed to reduce depth-of-interaction blurring requires a new calibration approach. Calibration by using a collimated beam of gamma rays to acquire a mean detector response function is important for maximum-likelihood estimation of interaction location. We have designed and built a 5-axis calibration stage to meet this need. The calibration system is able to move independently in 3 linear and 2 rotational dimensions to allow for complete control of collimated beam position and direction. This allows us to simulate gamma rays coming through a pinhole from any angle in the field of view. The need for precision in the movements between positions of the system motivated the use of a probe to map out the detector. Collision detection and automation in the software simplifies and speeds up the calibration process.
AB - New laser-induced optical-barrier technology designed to reduce depth-of-interaction blurring requires a new calibration approach. Calibration by using a collimated beam of gamma rays to acquire a mean detector response function is important for maximum-likelihood estimation of interaction location. We have designed and built a 5-axis calibration stage to meet this need. The calibration system is able to move independently in 3 linear and 2 rotational dimensions to allow for complete control of collimated beam position and direction. This allows us to simulate gamma rays coming through a pinhole from any angle in the field of view. The need for precision in the movements between positions of the system motivated the use of a probe to map out the detector. Collision detection and automation in the software simplifies and speeds up the calibration process.
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U2 - 10.1109/NSS/MIC42677.2020.9508049
DO - 10.1109/NSS/MIC42677.2020.9508049
M3 - Conference contribution
AN - SCOPUS:85124708192
T3 - 2020 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2020
BT - 2020 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2020 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2020
Y2 - 31 October 2020 through 7 November 2020
ER -