Validation Studies of Radioluminography. III. Examination of the Uniformity in .BETA.-Ray Sensitivity.

The validation study on the uniformity in β-ray sensitivity of radioluminography (RLG) has been performed. Imaging plates (IP) were irradiated with a 147Pm planar radiation source and then analyzed by two bio-imaging analyzer systems (BAS). The PSL values observed (PSLOB) on the irradiated IPs were statistically analyzed by a split method. An area dependency of appreciable extent in β-ray sensitivity was observed, which could be mainly attributed to the mechanics in BAS. The area dependency in β-ray sensitivity could be corrected using imaging plates that were irradiated with a 147Pm planar radiation source.