Radiation image read-out method and apparatus and stimulable pho

Details Radiation image read-out method and apparatus and stimulable pho Radiation image read-out method and apparatus and stimulable pho

1995-09-27

1997-08-05

Hannaher, Constantine

Radiant energy

Source with recording detector

Using a stimulable phosphor

250585, 250586, 250587, G03B 4202

Patent

active

056545568

ABSTRACT:
A stimulable phosphor sheet, on which a radiation image has been stored, is exposed to stimulating rays, which cause it to emit light in proportion to the amount of energy stored thereon during its exposure to radiation. The light, which is emitted from the front surface of the stimulable phosphor sheet, and the light, which is emitted from the back surface of the stimulable phosphor sheet, are respectively detected. An image readout from the front surface of the stimulable phosphor sheet and an image readout from the back surface of the stimulable phosphor sheet are thus carried out independently of each other, two image signals being thereby obtained. An abnormal state in the image readout from each of the front and back surfaces of the stimulable phosphor sheet is detected. In cases where an abnormal state has been detected in the image readout from the front or back surface of the stimulable phosphor sheet, the image readout from the surface side of the stimulable phosphor sheet, on which side the abnormal state in the image readout has been detected, is ceased.

REFERENCES:
patent: 4346295 (1982-08-01), Tanaka et al.
patent: 5012096 (1991-04-01), Takeda et al.

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