X-ray diagnostic device for producing computed tomography and radioscopic exposures
First Claim
Patent Images
1. An x-ray diagnostic apparatus comprising:
- a radiation emitter which emits x-rays;
a controllable gating arrangement disposed in a path of said x-rays for gating said x-rays;
a patient table adapted to receive a patient thereon disposed in said path of said x-rays;
a multi-line solid-state radiation detector disposed for detecting x-ray which have proceeded through said patient, for producing electrical signals dependent on an intensity of said x-rays incident thereon;
a rotatable gantry on which said radiation emitter and said multi-line solid-state radiation detector are mounted opposite each other;
a signal processor connected to said multi-line solid-state radiation detector for processing said electrical signals;
a display monitor connected to said signal processor; and
a control unit connected to said gantry, said radiation emitter and said signal processor for, in a first operating mode, rotating said gantry around a common center between said radiation emitter and said multi-line solid-state radiation detector, and operating said gating arrangement to produce a narrow fan beam of said x-rays, so that said electrical signals represent a plurality of projection data sets, and for operating said signal processor to generate a CT image from said projection data sets for display on said display monitor, and in a second operating mode, for maintaining said gantry and said patient table stationary and for operating said gating arrangement to produce an x-ray beam of said x-rays which is incident on substantially an entirety of said multi-line solid-state radiation detector, and for operating said signal processor to convert said electrical signals into a real time, two-dimensional image for display on said display monitor.
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Abstract
An x-ray diagnostic apparatus allows computed tomography exposures to be prepared in a first operating mode, and radioscopic exposures in a second operating mode.
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Citations
5 Claims
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1. An x-ray diagnostic apparatus comprising:
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a radiation emitter which emits x-rays;
a controllable gating arrangement disposed in a path of said x-rays for gating said x-rays;
a patient table adapted to receive a patient thereon disposed in said path of said x-rays;
a multi-line solid-state radiation detector disposed for detecting x-ray which have proceeded through said patient, for producing electrical signals dependent on an intensity of said x-rays incident thereon;
a rotatable gantry on which said radiation emitter and said multi-line solid-state radiation detector are mounted opposite each other;
a signal processor connected to said multi-line solid-state radiation detector for processing said electrical signals;
a display monitor connected to said signal processor; and
a control unit connected to said gantry, said radiation emitter and said signal processor for, in a first operating mode, rotating said gantry around a common center between said radiation emitter and said multi-line solid-state radiation detector, and operating said gating arrangement to produce a narrow fan beam of said x-rays, so that said electrical signals represent a plurality of projection data sets, and for operating said signal processor to generate a CT image from said projection data sets for display on said display monitor, and in a second operating mode, for maintaining said gantry and said patient table stationary and for operating said gating arrangement to produce an x-ray beam of said x-rays which is incident on substantially an entirety of said multi-line solid-state radiation detector, and for operating said signal processor to convert said electrical signals into a real time, two-dimensional image for display on said display monitor. - View Dependent Claims (2, 3, 4, 5)
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Specification