Splenic uptake in67Ga scintigraphy was evaluated retrospectively in 296 patients, 379 examinations. 25% (54/220) in male and 38% (60/ 159) in female showed splenic uptake. 10% (22/220) in mate and 17% (27/159) in female showed splenic uptake as much as lumber vertebra. There was no significant relationship between high splenic uptake and clinical diagnosis. About half cases of high splenic uprake showed splenomegaly or liver dysfunction. But one third of high splenic uptake cases showed no abnormal findings. Close relationship between splenic up-take alteration and chemotherapy was suspected. The splenic distribution of67Ga may be influenced by splenomegaly, liver dysfunction, and chemotherapy.
Thermoluminescence characteristics of CaSO4: Tm (UD-100 M 8) elements were examined for α-rays from241Am source to discuss a method for evaluating the energy absorbed by lung organization due to radon daughters using thermoluminescence dosimeters. As there are to some extent sensitivity difference among the elememts, it is necessary to make correction for the measured value by a factor determined for each element. It was found that the measured value was extremely well proportional to the absorbed energy of α-rays.