Detection of inflammation with 99mTC-HMPAO labelled leucocytes.

20 patients were studied with 99mTcHMPAO labelled leucocytes for detection of inflammation. 14 patients had positive uptake. 6 patients were examined also with 67Ga-citrate and 5 with 99mTc-nanocolloid. The 99mTc-HMPAO images were superior to other methods. Abscesses, osteitis, inflammatory bowel disease and graft infection were positive. Abscesses were positive at 30 min images and became more positive at 4 h. The 99mTc-HMPAO labelled leucocyte scan can be used also to follow up healing of inflammation.