Initial characterization of a BGO-photodiode detector for high resolution positron emission tomography Metadata

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Title

  • Main Title Initial characterization of a BGO-photodiode detector for high resolution positron emission tomography

Creator

  • Author: Derenzo, S.E.
    Creator Type: Personal

Publisher

  • Name: Lawrence Berkeley Laboratory
    Place of Publication: [Berkeley,] California

Date

  • Creation: 1983-11-01

Language

  • English

Description

  • Content Description: Spatial resolution in positron emission tomography is currently limited by the resolution of the detectors. This work presents the initial characterization of a detector design using small bismuth germanate (BGO) crystals individually coupled to silicon photodiodes (SPDs) for crystal identification, and coupled in groups to phototubes (PMTs) for coincidence timing. A 3 mm x 3 mm x 3 mm BGO crystal coupled only to an SPD can achieve a 511 keV photopeak resolution of 8.7% FWHM at -150/sup 0/C, using a pulse peaking time of 10 ..mu..s. When two 3 mm x 3 mm x 15 mm BGO crystals are coupled individually to SPDs and also coupled to a common 14 mm diam PMT, the SPDs detect the 511 keV photopeak with a resolution of 30% FWHM at -76/sup 0/C. In coincidence with an opposing 3 mm wide BGO crystal, the SPDs are able to identify the crystal of interaction with good signal-to-noise ratio, and the detector pair resolution is 2 mm FWHM. 32 references, 7 figures, 3 tables.
  • Physical Description: 9 pages

Subject

  • Keyword: Bismuth Compounds
  • Keyword: Computerized Tomography
  • Keyword: Radiation Detectors
  • Keyword: Semiconductor Diodes
  • Keyword: Semiconductor Devices
  • Keyword: Emission Computed Tomography
  • STI Subject Categories: 62 Radiology And Nuclear Medicine
  • Keyword: Tomography 550601* -- Medicine-- Unsealed Radionuclides In Diagnostics
  • Keyword: Measuring Instruments
  • Keyword: Positron Computed Tomography
  • Keyword: Diagnostic Techniques
  • Keyword: Spatial Resolution
  • Keyword: Ge Semiconductor Detectors
  • Keyword: Photodiodes
  • Keyword: Semiconductor Detectors
  • Keyword: Resolution
  • Keyword: Design

Source

  • Conference: Nuclear science symposium, San Francisco, CA, USA, 19 Oct 1983

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE84006750
  • Report No.: LBL-16952
  • Report No.: CONF-831015-35
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 5273042
  • Archival Resource Key: ark:/67531/metadc1067184

Note

  • Display Note: NTIS, PC A02/MF A01.
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