Subtraction processing method for radiation images

Details Subtraction processing method for radiation images Subtraction processing method for radiation images

1983-03-21

1986-05-20

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

128659, 2503272, 250363R, 2504841, 364414, H05B 3312

Patent

active

045905177

ABSTRACT:
Two or more stimulable phosphor sheets are exposed to a radiation passing through an object under conditions different from one another, and radiation images of the object at least partially different from one another are recorded on the stimulable phosphor sheets. The stimulable phosphor sheets are then scanned with stimulating rays to convert the radiation images into light, which is photoelectrically read out and converted into digital image signals. The digital image signals are subjected to a subtraction processing with respect to the corresponding picture elements of the images, thereby to obtain a signal for forming an image of a specific structure of the object.

REFERENCES:
patent: 4236078 (1980-11-01), Kotera
patent: 4258264 (1981-03-01), Kotera
patent: 4323973 (1982-04-01), Greenfield
patent: 4346295 (1982-08-01), Tanaka
patent: 4394581 (1983-07-01), Takahashi
"Gazo Shindan", vol. 4, Supplement 1, 1984, pp. 112-114.

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