Document Type

Patent

Patent Number

US Patent 4,748,328

Patent agency

United States Patent and Trademark Office

Publication Date

5-31-1988

Assignee

University of Iowa Research Foundation (Iowa City, IA, US)

Application Number

06/884,080

Date Filed

1986-07-10

Total Pages

7 pages

Abstract

A single photon emission computed tomograph comprising a detector ring and a rotatable collimator assembly disposed within the detector ring. The rotatable collimator assembly comprises four collimator quadrants, and each of the four collimator quadrants comprises a plurality of collimator modules with their axes assembled in parallel. Each of the modules contains a plurality of inwardly directed channels focused to a single point on its own axis with a long focal length. The focal length of each of the collimator modules is individually and flexibly chosen to suit a particular imaging task. The four collimator quadrants are installed in the rotatable collimator assembly at a slightly different angular offset so as to achieve fine data sampling.

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URL

https://ir.uiowa.edu/patents/58