A gamma-ray imager with multiplexer readout for use in ultra-high-resolution brain SPECT

An ultra-high-resolution single photon emission computed tomography (SPECT) system for brain imaging is discussed. The system uses a multiple-pinhole aperture and many modular detectors, each composed of an array of semiconductor detectors read out by a monolithic integrated circuit called a multipl...

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Published inIEEE transactions on nuclear science Vol. 40; no. 4; pp. 1140 - 1144
Main Authors Barber, H.B., Barrett, H.H., Dereniak, E.L., Hartsough, N.E., Perry, D.L., Roberts, P.C.T., Rogulski, M.M., Woolfenden, J.M., Young, E.T.
Format Journal Article
LanguageEnglish
Published IEEE 01.08.1993
Subjects
Apertures
Brain
Gamma ray detection
Gamma ray detectors
Gamma rays
Monolithic integrated circuits
Multiplexing
Optical imaging
Sensor arrays
Single photon emission computed tomography
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Summary:An ultra-high-resolution single photon emission computed tomography (SPECT) system for brain imaging is discussed. The system uses a multiple-pinhole aperture and many modular detectors, each composed of an array of semiconductor detectors read out by a monolithic integrated circuit called a multiplexer (MUX). The modular detectors, being passive integrators can detect individual gamma rays with good energy resolution. They will also have submillimeter spatial resolution and high count-rate capability. The basic concept of these detectors is described, and some of the design considerations for them are reviewed. Some preliminary experiments are reported that demonstrate that semiconductor detectors with multiplexer read-out act as gamma ray detectors.< >
Bibliography:ObjectType-Article-2
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content type line 23
ISSN:0018-9499
1558-1578
DOI:10.1109/23.256725