Radiography
Patent 4298799 Issued on November 3, 1981. Estimated Expiration Date: 
November 3, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 3, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesRadiography with noble gas containing detector cells Device for measuring local radiation absorption in a body Patent #: 4057725 InventorAssigneeApplicationNo. 05/897789 filed on 04/19/1978US Classes:378/4, Computerized tomography378/10, Nonrotating source or detector378/19, Beam detection system378/7Scatter compensatingExaminersPrimary: Church, Craig E.Attorney, Agent or FirmInternational ClassA61B 6/03 (20060101)Foreign Application Priority Data1976-03-03 GBAbstractIn a computerized tomographic radiographic apparatus a source directs a fan distribution of radiation through a patient to be detected by a bank of detector devices. The detector devices are disposed on a circular path centered on an axis about which the source orbits. The detectors are fixed relative to the body so that the radiation is incident on different detectors as the source orbits. Each detector devices receives radiation in different orientations, in the fan distribution, at different times.Other References
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