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Primary Examiner: Church, Craig E.
Assistant Examiner:
Attorney: Silverman; Arnold B.

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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:
3668402Jun, 1972Palermo250/510.
3822362Jul, 1974Weckler178/7.
3991316Nov, 1976Schmidt250/439.
4096391Jun, 1978Barnes250/505.
4097748Jun, 1978Monvorsen250/505.

Other Refs: Other References: "Investigation of Moving Slit Radiography," Sorenson Radiology, 9/76, pp. 705-711.