The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 01, 1984
Filed:
Jul. 17, 1981
William R Guth, Hoffman Estates, IL (US);
Siemens Gammasonics, Inc., Des Plaines, IL (US);
Abstract
A collimator for an Anger-type scintillation camera is disclosed in which a plurality of spaced pins of radiation transmitting material located within an internal cavity of a collimator housing serve as radiation transmitting channels and mercury filling the spaces between the pins serves as the radiation opaque septa. A channel containing mercury formed between the outermost pins and the side of the cavity serves as a mask to define the field of view of the camera crystal. A thermal expansion recess above the masking channel accommodates volume changes in the mercury due to changes in temperature. A method is disclosed for making the collimator housing out of molded plastic. Pins formed integrally with a base member and pins formed integrally with a cover plate are mated together to give high collimator aperture density. Filling ports are used to introduce mercury at elevated temperature into the closed structure.