NDLI: A high resolution scintillator based SPECT detector with digital pulse processing (SPECTatress)

Content Provider	IEEE Xplore Digital Library
Author	Deprez, K. Van Holen, R. Staelens, S. Vandenberghe, S.
Copyright Year	2010
Description	Author affiliation: Medical Image and Signal Processing group, Ghent University-IBBT, Ghent, Belgium (Deprez, K.; Van Holen, R.; Staelens, S.; Vandenberghe, S.)
Abstract	SPECT scanners using multi-pinhole collimators benefit from modular detectors having a high spatial resolution. Such detectors can be placed closer to the collimator and perpendicular to the pinhole axis (thereby limiting DOI spatial resolution degradation). Current clinical gamma ray cameras have a large area and a poor spatial resolution. This proceeding describes the architecture of SPECTatress, a modular high resolution gamma camera. A brief summary of the electronics and results obtained with the center-of-gravity positioning algorithm have been presented previously (Imaging 2010 conference, Stockholm). Here we present a detailed overview of the pre-amplifiers and the algorithms used in the FPGA. Results using a GPU accelerated MLE algorithm are shown. This measurement indicates a spatial resolution of 1.1mm FWHM in the center of the detector and an energy resolution of 9% FWHM.
Starting Page	3100
Ending Page	3104
File Size	1352478
Page Count	5
File Format	PDF
ISBN	9781424491063
ISSN	10957863
e-ISBN	9781424491056
DOI	10.1109/NSSMIC.2010.5874371
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detectors Spatial resolution Maximum likelihood estimation Cameras Energy resolution Calibration Collimators
Content Type	Text
Resource Type	Article

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