Leukocyte-technetium-99m uptake in Crohn’s disease: Does it show subclinical disease?

Figure 3 Images obtained 30 min and 2 h post-injection of 99mTc-HMPAO-labeled leukocytes in the caudal and anterior views. A: The arrows indicate the region of the intestine affected by the inflammation (L.M.T., female, 54 years); B: The arrows indicate 99mTc-HMPAO-labeled leukocyte uptake in the terminal ileum, descending colon and rectum-sigmoid (L.D., female, 24 years). The black arrows indicate terminal ileum; the arrowhead indicates descending colon; the white arrow indicates rectum-sigmoid.