Fast computed tomography method

Details Fast computed tomography method Fast computed tomography method

2007-04-24

2007-04-24

Johns, Andrew W. (Department: 2624)

Image analysis

Applications

Biomedical applications

C382S260000, C378S014000, C378S015000

Reexamination Certificate

active

10276020

ABSTRACT:
The invention relates to a computed tomography method for forming images of an object to be examined which is arranged in an examination zone. The examination zone is scanned by means of a conical X-ray beam. In order to enable images having a high image quality to be formed from a selected imaging zone while making an as small as possible computational effort, the invention proposes the following steps:a) selecting an imaging zone of the object to be examined,b) determining the sub-regions of the X-ray detector on which the imaging zone of the object to be examined is projected during the acquisition of the projection data,c) forming sub-projection data by selecting the projection data associated with the sub-regions from the acquired projection data, andd) reconstructing the desired image from the sub-projection data by backprojection.

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