Methods and apparatus for reducing partial volume image artifact

Details Methods and apparatus for reducing partial volume image artifact Methods and apparatus for reducing partial volume image artifact

1996-11-13

1998-03-10

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 8, 378901, A61B 603

Patent

active

057270414

ABSTRACT:
The present invention, in one form, is a method for improving image quality in Computed Tomography systems by using a partial volume artifact estimation algorithm. In accordance with one embodiment of the algorithm, an object of interest is scanned to generate image data. The image data is segmented into low attenuation data and high attenuation data. A gradient image is generated for two adjacent slices of the image data. The gradient image is then forward projected and squared. The squared gradient image is an estimation of partial volume artifacts in the image data, and therefore is removed from the image data.

REFERENCES:
patent: 5241576 (1993-08-01), Lonn

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