Patent ID: 6487267
Filing Date: 2002-11-26
Classification: A61B,G01N

Abstract:
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.