Feasibility of using cadmium-zinc-telluride detectors in electronically collimated SPECT

Journal Article · Tue Aug 01 04:00:00 EDT 1995 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/23.467735· OSTI ID:148061

Singh, M ^[1]; Doty, F P; Friesenhahn, S J; Butler, J F ^[2]

---

1. Univ. of Southern California, Los Angeles, CA (United States). Dept. of Radiology
2. Aurora Technologies Inc., San Diego, CA (United States)

Replacing cryogenically cooled germanium (Ge) with room-temperature operable cadmium-zinc-telluride (CZT) semiconducting detectors as the first detector of an electronically collimated SPECT system would have certain practical advantages. To determine the feasibility of this approach, the authors have performed a theoretical and experimental study comparing the resolution and detection efficiency of a Ge based system to that of a CZT based system. The results indicate that the detection efficiency of a CZT based system would be a factor of 2.5 lower than a comparable Ge based system at 140keV and the spatial resolution would also be approximately a factor of two worse. However, at higher energies, the difference between CZT and Ge would decrease, and at 662keV, for example, the CZT and the Ge systems could have nearly equal detection efficiency and resolution.

• OSTI ID: 148061
• Report Number(s): CONF-941061--
• Journal Information: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 4Pt1 Vol. 42; ISSN 0018-9499; ISSN IETNAE
• Country of Publication: United States
• Language: English

Related Subjects

55 BIOLOGY AND MEDICINE
BASIC STUDIES
COMPARATIVE EVALUATIONS
EFFICIENCY
IMAGE PROCESSING
SEMICONDUCTOR DETECTORS
SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY