Measurement of coincidence timing resolution with CdTe detectors

Y. Shao; H. B. Barber; S. Balzer; Simon R Cherry

doi:10.1117/12.410570

Measurement of coincidence timing resolution with CdTe detectors

Y. Shao, H. B. Barber, S. Balzer, Simon R Cherry

Radiology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

9 Scopus citations

Abstract

The coincidence timing resolution is a critical performance parameter to determine if direct gamma-ray detection by semiconductor detector materials such as CdTe or CdZnTe may be suitable for use in positron emission tomography (PET) systems. We report experimental results of the coincidence timing resolution measured with a pair of 2×2×10 mm ³ CdTe detectors irradiated by 511 keV gamma rays under conditions that allow good timing resolution and good energy resolution to be obtained simultaneously. The measured coincidence time resolutions ranged from 14 ns (350 keV lower energy threshold) to 24 ns (100 keV lower energy threshold). We also found that the coincidence timing resolution was proportional to the signal rise time, and that both of these were proportional to the electron transit time.

Original language	English (US)
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Publisher	Society of Photo-Optical Instrumentation Engineers
Pages	254-264
Number of pages	11
Volume	4142
DOIs	https://doi.org/10.1117/12.410570
State	Published - 2000
Event	Penetrating Radiation Systems and Applications II - San Diego, CA, USA Duration: Aug 2 2000 → Aug 3 2000

Other

Other	Penetrating Radiation Systems and Applications II
City	San Diego, CA, USA
Period	8/2/00 → 8/3/00

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics

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10.1117/12.410570

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Shao, Y, Barber, HB, Balzer, S & Cherry, SR 2000, Measurement of coincidence timing resolution with CdTe detectors. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 4142, Society of Photo-Optical Instrumentation Engineers, pp. 254-264, Penetrating Radiation Systems and Applications II, San Diego, CA, USA, 8/2/00. https://doi.org/10.1117/12.410570

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AB - The coincidence timing resolution is a critical performance parameter to determine if direct gamma-ray detection by semiconductor detector materials such as CdTe or CdZnTe may be suitable for use in positron emission tomography (PET) systems. We report experimental results of the coincidence timing resolution measured with a pair of 2×2×10 mm 3 CdTe detectors irradiated by 511 keV gamma rays under conditions that allow good timing resolution and good energy resolution to be obtained simultaneously. The measured coincidence time resolutions ranged from 14 ns (350 keV lower energy threshold) to 24 ns (100 keV lower energy threshold). We also found that the coincidence timing resolution was proportional to the signal rise time, and that both of these were proportional to the electron transit time.

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