| 摘要 |
In a method for detecting an energy level of residual noise on a stimulable phosphor sheet, 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 emitted light is detected, and the radiation image is thereby read out. A predetermined amount of erasing energy is given to the stimulable phosphor sheet, from which the radiation image has been read out, and noise having an energy level not higher than a predetermined energy level, which noise is among noise due to radiation image information remaining on the stimulable phosphor sheet, is thereby erased. Residual noise is then read out from the stimulable phosphor sheet, on which the noise having the energy level not higher than the predetermined energy level has been erased. An energy level of the residual noise, which has thus been read out, is then detected.
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