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Title:
Collimated radiation apparatus
Abstract:
Apparatus for exposing an object to x-ray radiation including adjustable object supporting and compressing means and first collimator means having an opening and being disposed between the x-ray generator and the object supporting means. Second collimator means having an opening and being disposed between the object supporting means and x-ray detecting means. Means are provided for moving the first and second collimator means in such fashion as to maintain alignment between the openings therein and the x-ray generator, in order to sequentially expose portions of the object of x-ray passing through the first collimator means and permit such x-ray to pass through the opening in a second collimator means and impinge upon the x-ray detecting means. The object supporting and compressing means is preferably structurally independent of the collimator means. The x-ray detecting means preferably takes the form of a highly sensitive detector such as a film-screen cassette or a self-scanning array of photodiodes optically coupled to scintillator means.
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Inventors:
Gur, David (Pittsburgh, PA, US) Sashin, Donald (Pittsburgh, PA, US) Sternglass, Ernest J. (Pittsburgh, PA, US)
Application Number:
957016
Filing Date: 1978-11-06 Publication_date: 1980-05-13 Assignee:
University of Pittsburgh (Pittsburgh, PA)
Primary Class(es):
378/37
378/62, 378/146, 378/155, 378/180
Other Classes:
US Patent Ref:
Other Refs:
Other References:
"Investigation of Moving Slit Radiography," Sorenson Radiology, 9/76, pp. 705-711. |