Method for examining a body region of an examination object,...

Details Method for examining a body region of an examination object,... Method for examining a body region of an examination object,...

2006-04-25

2006-04-25

Bruce, David V. (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S095000

Reexamination Certificate

active

07035370

ABSTRACT:
A method is for examining a body region of an examination object, which body region performs a periodic movement in the form of a sequence of movement cycles including phases of the periodic movement. The method preferably uses a CT apparatus with a radiation source for generating a radiation that penetrates through the examination object at different projection angles, and a detector system for the radiation emerging from the radiation source. An image, at least of the body region that performs the periodic movement, is determined by way of an electronic computing device from the output data of the detector system, which correspond to the detected radiation and are used as measurement data. In this case, it is provided that, from a number n≧1 of preferably successive movement cycles, data intervals are taken with respect to the same phase of the periodic movement. The overall length of these intervals produces at least one reconstruction interval that suffices for determining an image. The number of movement cycles from which the data intervals of a reconstruction interval originate increases as the frequency of the periodic movement increases, and the length of the data intervals falls as the frequency of the periodic movement increases.

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patent: 198 42 238 (2000-04-01), None

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