Method and apparatus for improving quality of energy subtraction

Details Method and apparatus for improving quality of energy subtraction Method and apparatus for improving quality of energy subtraction

1985-10-02

1989-03-28

Howell, Janice A.

Radiant energy

Automatic/serial detection of similar sources

36441323, 358111, 378 99, H04N 532, G03C 516

Patent

active

048166812

ABSTRACT:
In energy subtraction processing, two or more stimulable phosphor sheets are used to record radiation images of an object which includes bone image and soft tissue image, and a difference signal for forming an image wherein the bone image or the soft tissue image is erased is obtained from the radiation images. The image quality of the energy subtraction image is improved by using the difference signal for picture elements at the portion where the bone image or the image of the soft tissue of a thickness of a predetermined value or larger is present, and by using the original image signal detected from the stimulable phosphor sheets for picture elements at the other portions.

REFERENCES:
patent: 4559557 (1985-12-01), Keyes et al.
patent: 4564861 (1986-01-01), Hishinuma et al.
patent: 4590558 (1986-05-01), Glover et al.

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