Method and apparatus of image processing using energy substracti

Details Method and apparatus of image processing using energy substracti Method and apparatus of image processing using energy substracti

1997-10-21

2000-06-13

Johns, Andrew W.

Image analysis

Applications

Biomedical applications

378 9812, G06K 900

Patent

active

060758775

ABSTRACT:
A plurality of radiation image signals, each of which represents one of a plurality of radiation images of a single object and is made up of a series of image signal components, are obtained. The plurality of the radiation images of the single object have been formed respectively with a plurality of kinds of radiation having different energy distributions. A subtraction process is carried out in accordance with predetermined parameters and on image signal components of the radiation image signals, which image signal components represent corresponding picture elements in the radiation images, and a desired tissue pattern embedded in the radiation images is thereby extracted or emphasized. The values of the parameters are altered in accordance with a thickness of the object, and adverse effects of a beam hardening phenomenon and scattering of radiation are thereby reduced.

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