Spiral scan computed tomography apparatus with multiple x-ray so

Details Spiral scan computed tomography apparatus with multiple x-ray so Spiral scan computed tomography apparatus with multiple x-ray so

1995-10-11

1997-02-18

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 15, A61B 603

Patent

active

056047789

ABSTRACT:
A spiral scan computed tomography apparatus has multiple x-ray sources with their respective foci symmetrically arranged on a circle concentric with a measurement field around which the x-ray sources are rotated in order to spirally scan an examination subject while a relative motion between the x-ray sources and a patient support is produced along a longitudinal direction of the patient support. X-rays attenuated by the examination subject are detected by a stationary detector ring, or by a number of detector arrays which co-rotate with the x-ray sources on the gantry. The scan time can thereby be decreased in comparison to known systems or, within the same scan time a higher x-ray power can be achieved.

REFERENCES:
patent: 4150293 (1979-04-01), Franke
patent: 4384359 (1983-05-01), Franke
patent: 5068882 (1991-11-01), Eberhard
patent: 5291402 (1994-03-01), Pfoh
patent: 5375156 (1994-12-01), Kuo-Petravic et al.
patent: 5430783 (1995-07-01), Hu et al.
patent: 5454019 (1995-09-01), Migita et al.

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