CT dose reduction filter with a computationally efficient...

Details CT dose reduction filter with a computationally efficient... CT dose reduction filter with a computationally efficient...

2005-11-08

2005-11-08

Mehta, Bhavesh M. (Department: 2625)

Image analysis

Image enhancement or restoration

Image filter

C382S274000, C382S275000, C358S003260, C358S463000

Reexamination Certificate

active

06963670

ABSTRACT:
A technique for reducing noise in pixel images includes modifying initial image data to prevent subsequent image data loss, shrinking the modified image, processing the shrunken image with known segmentation-based filtering techniques which identify and differentially processing structures within the image. After processing, the shrunken image is enlarged to the dimensions of the initial data and subsequently processed to correct intensity irregularities and to preserve CT numbers. The resulting technique is versatile and provides greatly improved computational efficiency while maintaining image quality, allowing for dose reduction during imaging.

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patent: 6717610 (2004-04-01), Bos et al.
patent: 6720997 (2004-04-01), Horie et al.

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