Three dimensional scanned projection radiography using high speed computed tomographic scanning system
First Claim
1. In a high speed CT scanning system in which fan beams of radiation are generated by sweeping an electron beam along a target and collimated X-rays emitted by the target are received by an array of detectors after passing through a patient area between said target and said array of detectors, a method of obtaining a stereoscopic radiographic of a patient comprising the steps ofsweeping said electron beam along said target,measuring radiation received at two detector positions as said electron beam is swept along said target,moving said patient past said collimated X-rays, andassembling two radiographs from said radiation measured at said two detector positions, said two radiographs being alternately viewed by a viewer.
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Accused Products
Abstract
A stereoscopic or three dimensional radiograph or a continuously rotating three dimensional radiograph of a patient is obtained using a high speed CT scanning system in which fan beams of radiation are generated by sweeping an electron beam along a target. Collimated X-rays emitted by the target are received by an array of detectors after passing through a patient area between the target and the array of detectors. Two detector positions, comprising one or more detectors, each can be employed to obtain a pair of two dimensional projection radiographs. The radiographs are alternately viewed by a viewer by selectively opening and closing shutter means associated with the eyes of the viewer as the radiographs are alternately assembled for viewing whereby one eye sees one radiograph and the other eye sees the other radiograph. Alternatively, a plurality of pairs of detector positions can be employed in measuring radiation and obtaining a continuously rotating three dimensional projection radiograph.
98 Citations
6 Claims
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1. In a high speed CT scanning system in which fan beams of radiation are generated by sweeping an electron beam along a target and collimated X-rays emitted by the target are received by an array of detectors after passing through a patient area between said target and said array of detectors, a method of obtaining a stereoscopic radiographic of a patient comprising the steps of
sweeping said electron beam along said target, measuring radiation received at two detector positions as said electron beam is swept along said target, moving said patient past said collimated X-rays, and assembling two radiographs from said radiation measured at said two detector positions, said two radiographs being alternately viewed by a viewer.
Specification