Positron computed tomography scanner

Details Positron computed tomography scanner Positron computed tomography scanner

1992-06-30

1994-03-01

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

25036310, 2505051, 25036304, G01T 1166

Patent

active

052910210

ABSTRACT:
A positron CT scanner includes a plurality of detectors arranged in a generally cylindrical multi-layers of rings, and slice septa for restricting visual fields of the detectors so that the visual fields intersect a set axis. An interval of the slice septa is substantially corresponds to a plural number of detector cells each of which can determine positions of .gamma. rays incident in the direction of the set axis. The slice septa are movable relatively to the detector cells in the direction of the set axis during a .gamma. ray counting operation.

REFERENCES:
patent: 4259578 (1981-03-01), Thompson
patent: 4403338 (1983-09-01), Rudin et al.
patent: 4837439 (1989-06-01), Genna et al.
"The Effect of Collimation on Singles Rates in Multi-Slice Pet", Thompson, C. J., IEEE Transactions on Nuclear Science, vol. 36, No. 1, Feb. 1989, pp. 1072-1077.

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