Radiation image read-out apparatus, radiation image recording me

Details Radiation image read-out apparatus, radiation image recording me Radiation image read-out apparatus, radiation image recording me

1993-01-15

1994-08-23

Dzierzynski, Paul M.

Radiant energy

Source with recording detector

Using a stimulable phosphor

2504871, 2504842, G21K 400, G01N 2304, G03B 4202

Patent

active

053409965

ABSTRACT:
In a radiation image read-out apparatus, a stimulable phosphor sheet, which has been exposed to radiation which has passed through an object whose radiation absorptivity is basically distributed with predetermined characteristics, is exposed to stimulating rays which cause the stimulable phosphor sheet to emit light in proportion to the amount of energy stored thereon during its exposure to the radiation. The light, which is emitted by the portion of the stimulable phosphor sheet exposed to the stimulating rays, is detected with a photoelectric read-out device, and an image signal representing a radiation image of the object is thereby obtained. An optical filter is located between the stimulable phosphor sheet and the photoelectric read-out device such that the position of the optical filter corresponds to the position of the radiation image of the object stored on the stimulable phosphor sheet. The transmittance of the optical filter with respect to the light emitted by the stimulable phosphor sheet is distributed such that a basic difference in the radiation absorptivity of the object is compensated for.

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