Patent ID: 6333513
Filing Date: 2001-12-25
Classification: G01T

Abstract:
A method for processing electric signals of a radiographic image which are obtained by the steps of scanning a stimulating light beam on a stimulable phosphor sheet comprising a stimulating light-reflective or light-absorbent grid and stimulable phosphor-containing microcells surrounded by the grid and having a radiographic image recorded therein in a direction along the grid and photoelectrically collecting in sequence stimulated emissions emitting from the stimulable phosphor-containing microcells, which comprises the steps of:detecting a signal of a grid surrounding a microcell and a signal strength I corresponding to the microcell surrounded by the grid, so as to determine a signal strength I(x,y) in a microcell residing in a position (x,y) which is determined from a size information of the stimulable phosphor sheet and an order of the detected signal corresponding to the grid;determining a correcting value for the signal strength I(x,y) according to the following formula:correcting value=I(x,y)/I.sub.0 (x,y)wherein I.sub.0 (x,y) is a base sensitivity strength which is predetermined in the microcell residing in the position (x,y);andprocessing each signal strength detected in each microcell using each correcting value determined in each microcell, in consideration of a predetermined pixel size of the radiographic image, to obtain a corrected radiographic image data.