Radiation image read-out method and apparatus

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

1982-11-24

1985-01-29

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358209, 358294, 364414, 430966, H04N 532, H04N 530

Patent

active

044969732

ABSTRACT:
In a radiation image read-out system in which a stimulable phosphor sheet carrying a radiation image stored thereon is exposed to stimulating rays which causes it to emit light in the pattern of the stored image, and the emitted light is photoelectrically read out, the phosphor sheet is uniformly desensitized by the exposure thereof to stimulating rays. Then, preliminary read-out is conducted by use of stimulating rays having stimulation energy lower than the stimulation energy of stimulating rays used in final read-out, and the final read-out conditions and the image processing conditions are set based on the image input information obtained by the preliminary read-out. The desensitization is conducted to eliminate 3% to 60% of the radiation energy stored on the phosphor sheet in order to obtain the image input information suitable for setting the conditions regardless of the interval between the radiation image recording and the preliminary read-out.

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