Diagnostic radiology apparatus for producing layer images
First Claim
1. Diagnostic radiology apparatus for producing layer images of a radiography subject, comprising a patient support, a measuring arrangement for irradiating the radiography subject from various directions, comprised of a radiation source (2) which emits a fan-shaped radiation beam penetrating the layer to be examined, whose dimension perpendicular to the layer plane is approximately equal to the layer thickness, and of a radiation receiver (3) formed of a series of detectors, which delivers electric output signals corresponding to the measured radiation intensity, a rotating frame (1) on which the radiation source and the radiation receiver are mounted, and a transmission network (8) with a video unit (9) for converting the output signals of the radiation receiver into an image of the examined layer, the video unit (9) being operable with a polar coordinate system in which a number of concentric image point circles are written, each of which is locally allocated, via the transmission network (8), to a specific detector in the radiation receiver (3) and is modulated in its intensity largely corresponding to the output signal of the associated detector, and means (11) for synchronizing the recording operation of the video unit with the scanning movement of the measuring arrangement (2, 3) such that the circles are completely recorded when a scan cycle is terminated.
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Accused Products
Abstract
In an exemplary embodiment, a measuring arrangement comprised of a radiation source irradiates the radiography subject with a fan-shaped x-ray beam. The output signals of the detectors of the radiation receiver control a video unit via a transmission network. The video unit is designed in the manner of a radar video unit in which a number of concentric image point circles is recorded, each of which is locally allocated to a specific detector in the radiation receiver via the transmission network and is modulated in its intensity largely corresponding to the output signal of the associated detector. The recording operation on the viewing screen of the video unit is synchronized with the scan movement of the measuring arrangement.
207 Citations
1 Claim
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1. Diagnostic radiology apparatus for producing layer images of a radiography subject, comprising a patient support, a measuring arrangement for irradiating the radiography subject from various directions, comprised of a radiation source (2) which emits a fan-shaped radiation beam penetrating the layer to be examined, whose dimension perpendicular to the layer plane is approximately equal to the layer thickness, and of a radiation receiver (3) formed of a series of detectors, which delivers electric output signals corresponding to the measured radiation intensity, a rotating frame (1) on which the radiation source and the radiation receiver are mounted, and a transmission network (8) with a video unit (9) for converting the output signals of the radiation receiver into an image of the examined layer, the video unit (9) being operable with a polar coordinate system in which a number of concentric image point circles are written, each of which is locally allocated, via the transmission network (8), to a specific detector in the radiation receiver (3) and is modulated in its intensity largely corresponding to the output signal of the associated detector, and means (11) for synchronizing the recording operation of the video unit with the scanning movement of the measuring arrangement (2, 3) such that the circles are completely recorded when a scan cycle is terminated.
Specification
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- Resources
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Current AssigneeSiemens AG
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Original AssigneeSiemens AG
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InventorsPfeiler, Manfred
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Primary Examiner(s)Church, Craig E.
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Application NumberUS06/208,437Time in Patent Office783 DaysField of Search378/19, 378/99US Class Current378/19CPC Class CodesA61B 6/032 Transmission computed tomog...
