Technetium-99m HMPAO labeled leukocytes in inflammation imaging.
Technetium-99m-HMPAO (Tc-99m-HMPAO) labeled leukocyte imaging was carried out in 19 patients at 3-5 hr after reinjection. There were no side effects noted. Tc-99m leukocyte images showed gall bladder, colon, kidney, and urinary bladder activity in normal distribution as a result of excretion of the eluted Tc-99m complex. They yielded a sensitivity of 93%, a specificity of 100% and an accuracy of 95%. They were correctly positive in 14 out of 19 cases. But one false negative case was seen in a patient with pyonephrosis showing a lack of renal function with decreased renal blood flow. It was concluded that they have some advantages over In-111 leukocyte images, but we have to consider the fact that the ureteral obstruction or the lack of renal function with decreased renal blood flow may result in a false positive or a false negative case.
Uno
K
K
Department of Radiology, Chiba University School of Medicine, Japan.
Yoshikawa
K
K
Imazeki
K
K
Minoshima
S
S
Arimizu
N
N
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001424:Bacterial Infections / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007249:Inflammation / Q000000981:diagnostic imaging*; D007962:Leukocytes; D008297:Male; D008875:Middle Aged; D015609:Organotechnetium Compounds; D010091:Oximes; D011877:Radionuclide Imaging; D012680:Sensitivity and Specificity; D019690:Technetium Tc 99m Exametazime
D015609:Organotechnetium Compounds; D010091:Oximes; D019690:Technetium Tc 99m Exametazime