Method and apparatus for forming energy subtraction images

Details Method and apparatus for forming energy subtraction images Method and apparatus for forming energy subtraction images

1990-10-19

1991-09-17

Hannaher, Constantine

Radiant energy

Automatic/serial detection of similar sources

378 62, 378 99, G03B 4202

Patent

active

050497480

ABSTRACT:
Digital image signals are detected from radiation images of an object constituted of bones and soft tissues. A subtraction process is carried out with a predetermined parameter on the digital image signals, and a difference signal representing an image of part of the object is obtained. Each of images of a phantom, which has part exhibiting an equivalent radiation absorption coefficient to bones and/or part exhibiting an equivalent radiation absorption coefficient to soft tissues, is read out together with each object image. A value of the parameter is found, with which the image of either part of the phantom becomes erased in a subtraction image of the phantom obtained from subtraction processing. The value of the parameter, which has thus been found, is determined as an optimum value of the parameter. Subtraction processing is then carried out by using the optimum value of the parameter.

REFERENCES:
patent: 4258264 (1981-03-01), Kotera et al.
patent: 4335427 (1982-06-01), Hunt et al.
patent: 4559557 (1985-12-01), Keyes et al.
patent: 4590517 (1986-05-01), Kato et al.
patent: 4644582 (1987-02-01), Morishita et al.
patent: 4851984 (1989-07-01), Doi et al.
patent: 4855598 (1989-08-01), Ohgoda et al.

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