Position-sensitive radiation detector

Details Position-sensitive radiation detector Position-sensitive radiation detector

1989-03-07

1990-07-31

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

2504871, G01T 1202

Patent

active

049452410

ABSTRACT:
A position-sensitive radiation detector has a multi-layer scintillator assembly coupled to a position-sensitive photo-detector. Individual scintillator blocks of rectangular solid form in each scintillator layer are optically isolated by a reflecting agent such as BaSO.sub.4, and the adjacent layers are optically coupled by a coupling agent such as silicon grease. In the case of the scintillator assembly of n layers, the scintillator blocks in one layer are staggered with those in the adjacent layer by one nth of the width of each block. In addition to information on a horizontal position, information on the depth of radiation absorption can be obtained by calculating the centroid or variance of a spatial distribution of light outputted from the scintillator assembly.

REFERENCES:
patent: 4675526 (1987-06-01), Rogers et al.
patent: 4743764 (1988-05-01), Casey et al.
patent: 4749863 (1988-06-01), Casey et al.
patent: 4823016 (1989-04-01), Yamashita et al.
patent: 4831263 (1989-05-01), Yamashita
Japanese Patent Application (Unexamined) Publication No. 61-237081; Oct. 22, 1986.
Japanese Patent Application (Unexamined) Publication No. 61-271486; Dec. 1, 1986.
Rogers et al., "Design of an Efficient Position Sensitive Gamma Ray Detector for Nuclear Medicine", Phys. Med. Biol., vol. 31, No. 10, pp. 1061-1090, 1986.
Wong, "Designing a Stratified Detection System for PET Cameras", IEEE Transactions on Nuclear Science, vol. 33, No. 1, pp. 591-596, Feb. 1986.
Rogers, "Testing an Improved Scintillation Camera for PET and SPECT", IEEE Transactions on Nuclear Science, vol. 33, No. 1, pp. 519-522, Feb. 1986.

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