A prototype BaF sub 2 /TMAE low pressure multiwire proportional chamber for PET

Journal Article · Mon Apr 01 04:00:00 EST 1991 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/23.289377· OSTI ID:5012756

Suckling, J; Ott, R J; Marsden, P K ^[1]; Bateman, J E; Connolly, J F; Stephenson, R ^[2]

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1. Inst. of Cancer Research, Royal Marsden Hospital, Downs Road, Sutton, Surrey SM2 5PT (GB)
2. Rutherford Appleton Lab., Chilton (United Kingdom)

The RMH/ICR/RAL collaboration has constructed a prototype annihilation photon detector combining a 50 {times} 50 {times} 8mm{sup 3} BaF{sub 2} scintillator to a MWPC filled with a photoionising vapour (TMAE) at low pressure. The structure of the detector is currently undergoing optimisation but its present performance includes 8mm FWHM spatial resolution, 12ns timing resolution and 19% efficiency. It is intended that this technology, once proven, should form the basis for a clinical PET system. In order to cover the large active areas (600 {times} 400 mm{sup 2}) of a clinical system it will be necessary to use tiles of BaF{sub 2}. Crystal boundary effects on image quality, studied using Monte Carlo methods, show degraded spatial resolution by 40% axially and 27% radially/tangentially for a 6 {times} 4 array of 16mm thick crystals replacing a hypothetical large single crystal. This paper describes further studies to characterize the distribution of scattered events in the proposed camera.

• OSTI ID: 5012756
• Journal Information: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) Vol. 38:2; ISSN 0018-9499; ISSN IETNA
• Country of Publication: United States
• Language: English

Related Subjects

550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM FLUORIDES
BOSONS
COMPUTERIZED TOMOGRAPHY
CRYSTALS
DIAGNOSTIC TECHNIQUES
EFFICIENCY
ELEMENTARY PARTICLES
EMISSION COMPUTED TOMOGRAPHY
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
IONIZATION
MASSLESS PARTICLES
MEASURING INSTRUMENTS
MONTE CARLO METHOD
MULTIWIRE PROPORTIONAL CHAMBERS
PERFORMANCE
PHOTOIONIZATION
PHOTONS
POSITRON COMPUTED TOMOGRAPHY
PROPORTIONAL COUNTERS
RADIATION DETECTORS
RESOLUTION
SCATTERING
SCINTILLATIONS
SPATIAL RESOLUTION
TIME RESOLUTION
TIMING PROPERTIES
TOMOGRAPHY