Method for post-processing of a tomogram, and computed tomograph

Details Method for post-processing of a tomogram, and computed tomograph Method for post-processing of a tomogram, and computed tomograph

1998-08-20

2000-04-04

Bruce, David V.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378901, A61B 603

Patent

active

060470399

ABSTRACT:
In a method for operating a third-generation computed tomography apparatus and in a computed tomography apparatus operating according to this method, ring artefacts are removed. The pixel values of the tomogram are subjected to one or more median filterings and to an averaging. The median filterings and the averaging take place along a number of processing directions.

REFERENCES:
patent: 5416815 (1995-05-01), Hsieh
patent: 5802135 (1998-09-01), Wohlrab
A Review of Physical Aspects of X-ray Transmission Computed Tomography, Webb, IEE Proceedings, vol. 134, Part A, Feb., 1987, pp. 126-135.

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