Patent Number: 6,169,778

Title: Computed tomography device

Abstract: A computed tomography (CT) device has a stationary frame and a rotor, carrying an X-ray source and a radiation detector, which is rotatably mounted at the frame. A number of marks are provided at the rotor at known angular intervals, these marks being scanned by a sensor, which is attached at the frame and which emits an output signal given the passing of a mark. The number of marks is significantly lower than the number of projections that are picked up in each rotation of the rotor. A computing unit determines the projection angles pertaining to the individual projections by interpolation from the output signals of the sensor.

Inventors: Schmidt; Martin (Emskirchen, DE), Sembritzki; Otto (Wachenroth, DE)

Assignee: Siemens Aktiengesellschaft

International Classification: A61B 6/03 (20060101); G01N 23/04 (20060101); G01D 5/26 (20060101); G01D 5/347 (20060101); G01N 23/02 (20060101); A61B 006/03 ()

Expiration Date: 01/02/2018