using a rating system based on tumor uptake and tumor-to-brain , tumor-to-blood , and tumor-to-skin ratios , the data obtained with this compound were compared with similar data obtained previously in the same model with tc-99m fe- ( ascorbic acid ) , tc-99m fe- ( ascorbic acid ) -dtpa , tc-99m sn-dtpa , [ 99mtc ] pertechnetate , and [ 99mtc ] pertechnetate with perchlorate predose .
C0027651
tumor
C0013254
dtpa