| Abstract: | This investigation was undertaken to make clear the influence of ferric metabolism on Ga-67 distribution in human body. Count ratios for each organ to femoral soft tissue (i.e. relative Ga-67 uptake) were calculated in 125 scintigrams obtained 48 hours following injection, and the relation between the relative Ga-67 uptake in each organ and serum Fe, or UIBC were investigated. The relative Ga-67 uptake in the liver and the lumbar vertebra had negative correlation to serum Fe, and had positive correlation to UIBC. However, there was no significant difference in the relative Ga-67 uptake in the lumbar vertebra between normal and high serum Fe group. Only in group with exceedingly low serum Fe, each vertebral body was visualized separately in posterior view of the abdomen. These findings indicated that in group with exceedingly low serum Fe, Ga-67 accumulated mainly in the bone marrow, and in group with high serum Fe, Ga-67 accumulated mainly in the bone. The urinary bladder was visualized only in group with high serum Fe, which suggested that the excretion of Ga-67 to the urine was continued yet at 48 hours after injection. Ferric metabolism affected remarkably on the relative Ga-67 uptake in the liver, the bone marrow and the bone, and also the excretion of Ga-67 to the urine. |
