The effects of detector material and structure on PET spatial resolution and efficiency

Conference · Sun Apr 01 00:00:00 EST 1990 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA)

OSTI ID:6606802

Thompson, C J ^[1]

---

1. Montreal Neurological Inst., PQ (Canada)

Many annihilation photons undergo one or more Compton interactions in PET scintillation crystals before being absorbed photo-electrically or escaping from the crystal. Only the site of the first interaction is on the original trajectory and expresses the exact localization of the annihilation. In larger crystals, or block detectors the light from all scintillations appears to originate from the centroid of all interactions. This paper reports the number of interactions, and tangential component of the mean square distance between the centroid and the point of first interaction simulated using Monte Carlo techniques.

• OSTI ID: 6606802
• Report Number(s): CONF-900143-; CODEN: IETNA; TRN: 90-031697
• Journal Information: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA), Vol. 37:2; Conference: Institute for Electronic and Electrical Engineers (IEEE) nuclear science symposium, San Francisco, CA (USA), 15-19 Jan 1990; ISSN 0018-9499
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
62 RADIOLOGY AND NUCLEAR MEDICINE
07 ISOTOPES AND RADIATION SOURCES
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
CRYSTAL LATTICES
MATERIALS TESTING
IMAGE SCANNERS
SPATIAL RESOLUTION
POSITRON COMPUTED TOMOGRAPHY
ANNIHILATION
BGO DETECTORS
COMPTON SCATTERING TOMOGRAPHY
GAMMA RADIATION
KEV RANGE 100-1000
MONTE CARLO METHOD
PHOTOELECTRIC EFFECT
PHOTONS
SCINTILLATOR-PHOTODIODE DETECTORS
BASIC INTERACTIONS
COMPUTERIZED TOMOGRAPHY
CRYSTAL STRUCTURE
DIAGNOSTIC TECHNIQUES
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EMISSION COMPUTED TOMOGRAPHY
ENERGY RANGE
INTERACTIONS
IONIZING RADIATIONS
KEV RANGE
MASSLESS PARTICLES
MEASURING INSTRUMENTS
PHOTOELECTROMAGNETIC EFFECTS
RADIATION DETECTORS
RADIATIONS
RESOLUTION
SCINTILLATION COUNTERS
SOLID SCINTILLATION DETECTORS
TESTING
TOMOGRAPHY
440103* - Radiation Instrumentation- Nuclear Spectroscopic Instrumentation
550601 - Medicine- Unsealed Radionuclides in Diagnostics
655002 - Medical Physics- Radiation Source Calibration & Standardization
990200 - Mathematics & Computers