PROCESSING METHOD AND DEVICE OF RADIATION PICTURE INFORMATION READING GRADATION

摘要

PURPOSE:To prevent decrease in diagnostic performance of a desired diagnostic part and to improve the diagnostic performance by executing main reading according to a reading condition Gp which is decided based on picture information obtained by prereading. CONSTITUTION:An automatic sensitivity adjusting means 2 scans the cumulative phosphor sheet where radiation picture information is accumulated and recorded by excitation light which has the lower level than excitation light which is used when main reading is executed prior to main reading, and executes prereading which reads the outline of picture information accumulated on the sheet. Reading condition Gp when reading is executed based on information obtained by prereading is decided. The reading condition Gp which is decided by the means 2 is inputted to a main reading means 3 through a control means 7. The means 3 reads accelerated phosphorescence emitting light which is emitted from the sheet by scanning the above-mentioned sheet by excitation light, and outputs the electrical picture signal to obtain the output picture.