Hybrid collimator

Details Hybrid collimator Hybrid collimator

1982-04-08

1985-03-19

Church, Craig E.

X-ray or gamma ray systems or devices

Specific application

Radiation coding

250363S, 2505051, 378149, G03B 4116

Patent

active

045063745

ABSTRACT:
A hybrid collimator for tomographic imaging with a scintillation camera comprising a coded aperture plate and a parallel plate collimator. The code plate includes a plurality of lateral slits each of which is radiopaque or radiotransparent pursuant to a time modulated code. The parallel plates define a plurality of radiotransparent channels whose lengthwise orientation is orthogonal to the lateral slits of the code plate. In a preferred embodiment, the code plate is advanced across the channels of the collimator in a direction parallel to their lengthwise orientation rendering a time coded pattern that is identical for each channel.

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patent: 4092540 (1978-05-01), Barrett
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"A Class of Near-Perfect Coded Apertures", Cannon, et al., IEEE Transactions on Nuclear Science, vol. NS-25, No. 1, Feb. 1978.
"Introducing SPRINT: A Single Photon Ring System for Emission Tomography", Williams, et al., The University of Michigan.

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