1992 Volume 167 Issue 3 Pages 181-184
YAMADA, S., KUBOTA, R., KUBOTA, K., ISHIWATA, K. and IDO, T. Efficiency of Grain Production and Latent Image Fading in F-18 Micro-autoradiography. Tohoku J. Exp. Med., 1992, 167 (3), 181-184 -In 18F micro-autoradiography using a frozen section method, the grain production was measured relative to the exposure time and radioactivity. The grain production increased until 6-hr exposure, but 7-hr or longer exposure induced a characteristic of latent image fading. However, the ratios of the efficiency of grain production between two different 18F-radioactivities (11.9 and 2.3mBq/100μm2) were constant over experimental exposure times, thus indicating that quantitative analysis by grain counting is preserved.
