Fast diagnosis of abdominal infections and inflammations with technetium-99m-HMPAO labeled leukocytes.
The diagnostic value of early 99mTc-HMPAO-leukocyte images (2 min, 0.5 hr, 2 hr and 4 hr) was studied in 87 prospectively performed investigations in 80 patients with a suspicion of abdominal inflammation or infection. Sensitivity, specificity and accuracy were 74%, 85% and 77% in the 2-min scans, 88%, 81% and 86% in the 0.5-hr scans, 95%, 85% and 92% in the 2-hr scans, and 96%, 92% and 95% in the 4-hr scans. Nonspecific bowel accumulation was seen in 7% of patients at 2 hr and in 28% at 4 hr but was easily distinguishable from pathologic activity. The uptake in early images represents an active accumulation of granulocytes at the site of inflammation rather than nonspecific blood-pool activity judged by results of 99mTc-HMPAO-RBC imaging. We found that imaging within 2 hr from injection has a high diagnostic value, and that the activity accumulates in areas of infection and inflammation faster than in the intestinal background.
Department of Radiology, Paijat-Hame Central Hospital, Lahti, Finland.
E H
EH
Lantto
T J
TJ
Lantto
M
M
Vorne
D000005:Abdomen / Q000000981:diagnostic imaging*; D000038:Abscess / Q000000981:diagnostic imaging*; D004238:Diverticulitis / Q000000981:diagnostic imaging*; D004912:Erythrocytes; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D015212:Inflammatory Bowel Diseases / Q000000981:diagnostic imaging*; D007962:Leukocytes; D008297:Male; D008875:Middle Aged; D015609:Organotechnetium Compounds; D010091:Oximes; D011237:Predictive Value of Tests; D011446:Prospective Studies; D011877:Radionuclide Imaging; D012680:Sensitivity and Specificity; D019690:Technetium Tc 99m Exametazime; D013997:Time Factors
D015609:Organotechnetium Compounds; D010091:Oximes; D019690:Technetium Tc 99m Exametazime