Initial characterization of a position-sensitive photodiode/BGO detector for PET

Conference · Wed Feb 01 04:00:00 EST 1989 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:6359542

Derenzo, S E; Moses, W W; Jackson, H G; Turko, B T; Cahoon, J L; Geyer, A B; Vuletich, T

The authors present initial results of a position-sensitive photodiode/BGO detector for high resolution, multi-layer positron emission tomography (PET). Position sensitivity is achieved by dividing the 3 mm x 20 mm rectangular photosensitive area along the diagonal to form two triangular segments. Each segment was individually connected to a low-noise charge amplifier. The photodiodes and crystals were cooled to -100/sup 0/C to reduce dark current and increase the BGO signal. With an amplifier peaking time of 17 ..mu..sec, the sum of the signals (511 keV photopeak) was 3200 electrons with a full width at half maximum (fwhm) of 750 electrons. The ratio of one signal to the sum determined the depth of interaction with a resolution of 11 mm fwhm.

• Research Organization: Donner Lab. and Lawrence Berkeley Lab., Univ. of California, Berkeley, CA (US)
• OSTI ID: 6359542
• Report Number(s): CONF-881103-
• Conference Information: Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: 36:1
• Country of Publication: United States
• Language: English

Related Subjects

440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BGO DETECTORS
COMPUTERIZED TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
ELECTRONS
ELEMENTARY PARTICLES
EMISSION COMPUTED TOMOGRAPHY
FERMIONS
LEPTONS
MEASURING INSTRUMENTS
PERFORMANCE
PHOTODIODES
PHOTOSENSITIVITY
POSITRON COMPUTED TOMOGRAPHY
RADIATION DETECTORS
SCINTILLATION COUNTERS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SENSITIVITY
SOLID SCINTILLATION DETECTORS
TOMOGRAPHY