PMID- 10088163 OWN - NLM STAT- MEDLINE DCOM- 19990624 LR - 20190905 IS - 0143-3636 (Print) IS - 0143-3636 (Linking) VI - 20 IP - 2 DP - 1999 Feb TI - 111In-labelled bleomycin complex for the differentiation of high- and low-grade gliomas. PG - 145-52 AB - The aim of this study was to evaluate 111In-labelled bleomycin complex (111In-BLMC) SPET in the differentiation of high- and low-grade gliomas. Nineteen glioma patients, 14 with high-grade and five with low-grade tumours, were studied 1, 4 and 24 h after the injection of 111In-BLMC. In the high-grade glioma group, there was significant uptake of 111In-BLMC in 12 patients and no uptake in two patients based on the visual classification of SPET images at 4 and 24 h. In the low-grade glioma group, one patient had low uptake at 4 and 24 h, but the other four patients showed no visible uptake. The mean tumour to extracerebral circulation activity ratio (T/Cr) at 4 h was 0.13 +/- 0.10 (n = 5) in low-grade gliomas and 1.7 +/- 1.0 (n = 14) in high-grade gliomas. At 24 h the T/Cr ratios were 0.56 +/- 0.21 and 3.4 +/- 1.7, respectively. The mean tumour to contralateral normal brain activity ratios (T/Br) were 5.0 +/- 3.9 (4 h) and 3.0 +/- 2.8 (24 h) in low-grade gliomas, and 37.2 +/- 37.3 (4 h) and 8.3 +/- 8.2 (24 h) in high-grade gliomas. These higher T/Br ratios did not, however, result in improved differentiation between the two groups of gliomas; at 4 h the T/Cr and T/Br ratios were of equal value, as two high-grade gliomas would have been misclassified as low-grade, but at 24 h the T/Br ratio resulted in more misclassifications. Our results show that 111In-BLMC can be used in the differentiation of high- and low-grade gliomas and that the selection of the reference area for calculating tumour to non-tumour ratios is important. FAU - Korppi-Tommola, T AU - Korppi-Tommola T AD - Department of Radiology, Helsinki University Central Hospital, Finland. tapani.korppi-tommola@huch.fi FAU - Huhmar, H AU - Huhmar H FAU - Aronen, H J AU - Aronen HJ FAU - Penttila, P AU - Penttila P FAU - Hiltunen, J AU - Hiltunen J FAU - Savolainen, S AU - Savolainen S FAU - Kallio, M E AU - Kallio ME FAU - Liewendahl, K AU - Liewendahl K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Nucl Med Commun JT - Nuclear medicine communications JID - 8201017 RN - 0 (Indium Radioisotopes) RN - 0 (Organometallic Compounds) RN - 0 (indium-bleomycin) RN - 11056-06-7 (Bleomycin) SB - IM MH - Adult MH - Aged MH - Bleomycin/*analogs & derivatives MH - Brain/*diagnostic imaging MH - Brain Neoplasms/*diagnostic imaging/pathology MH - Data Interpretation, Statistical MH - Female MH - Glioma/*diagnostic imaging/pathology MH - Humans MH - *Indium Radioisotopes MH - Male MH - Middle Aged MH - *Organometallic Compounds MH - *Tomography, Emission-Computed, Single-Photon EDAT- 1999/03/24 00:00 MHDA- 1999/03/24 00:01 CRDT- 1999/03/24 00:00 PHST- 1999/03/24 00:00 [pubmed] PHST- 1999/03/24 00:01 [medline] PHST- 1999/03/24 00:00 [entrez] AID - 10.1097/00006231-199902000-00006 [doi] PST - ppublish SO - Nucl Med Commun. 1999 Feb;20(2):145-52. doi: 10.1097/00006231-199902000-00006.