Method for the post-processing of a tomogram, and computed tomog

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

1998-08-20

2000-03-28

Bruce, David V.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 94, A62B 603

Patent

active

060441259

ABSTRACT:
In a method for the post-processing of a tomogram, and a computed tomography apparatus operating according to this method, a universal computer is employed for post-processing of a reconstructed tomogram of a slice of an examination subject, the tomogram representing the entire field of measurement of the computed tomography apparatus or a segment of the field of measurement. The post-processing employs an adaptive ring suppression filter, in which the pixel values of a region comprising the entire tomogram or a part of the tomogram are subjected to, among other things, one or more median filterings, and an averaging, with the median filterings and the averaging take place along a number of directions of execution, and the calculation of the pixel values of the region takes place so that the pixel values of successive pixels in the each processing direction are calculated successively.

REFERENCES:
patent: 5915036 (1999-06-01), Grunkin et al.
"Lexikonm der Computergrafik und bildverarbeitung," Iwainsky et al., 1994, pp. 235.

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