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Proceedings Paper

A linear estimator for timing calibration in time-of-flight PET
Author(s): Michel Defrise
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Paper Abstract

We study the performance of a method for the timing calibration of a TOF scanner using arbitrary phantom or patient data. The method uses an initial non TOF reconstruction and estimates the timing offsets of the detectors by weighted least-squares fitting. Assuming bias-free and noise-free estimates of scatter and randoms, the method is shown to yield an unbiased estimate. In addition a theorem and numerical results show that this simple method is close to optimal for the type of phantoms typically used for calibration.

Paper Details

Date Published: 28 May 2019
PDF: 5 pages
Proc. SPIE 11072, 15th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, 110721G (28 May 2019);
Show Author Affiliations
Michel Defrise, Vrije Univ. Brussel (Belgium)


Published in SPIE Proceedings Vol. 11072:
15th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine
Samuel Matej; Scott D. Metzler, Editor(s)

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