Investigations of brain tumours with 99Tcm-HMPAO SPECT.
The cerebral uptake of 99Tcm-hexamethylpropyleneamine oxime (99Tcm-HMPAO) as measured with the use of single photon emission computed tomography (SPECT) was studied in 66 patients with various types of brain tumours and quantified by tumour-to-cerebellum ratios. The uptake of 99Tcm-HMPAO by gliomas and meningiomas showed wide ranges of values. There were no significant differences among primary malignant gliomas (0.75 +/- 0.27, n = 25), recurrent malignant gliomas (0.81 +/- 0.25, n = 14) and benign gliomas (0.77 +/- 0.21, n = 9). Compared to gliomas, meningiomas exhibited a significantly higher 99Tcm-HMPAO uptake (1.14 +/- 0.31, n = 13, p less than 0.001) while the remaining four patients with tumours of various histopathology showed a low 99Tcm-HMPAO uptake. Three of the 66 patients were scanned immediately and again 2 h after injection and they revealed a decrease in tumour activity. No changes in the pattern of uptake were observed in two patients with gliomas which were studied before and after intra-arterial chemotherapy, but a decrease in tumour uptake was found in the glioma patient who was studied before and after radiotherapy. The results obtained with 99Tcm-HMPAO SPECT are in agreement with those on regional cerebral blood flow (rCBF) in brain tumours reported in the literature.
Langen
K J
KJ
Institute of Medicine, Nuclear Research Center Jülich, FRG.
Roosen
N
N
Herzog
H
H
Kuwert
T
T
Kiwit
J C
JC
Bock
W J
WJ
Feinendegen
L E
LE
D001932:Brain Neoplasms / Q000098:blood supply / Q000000981:diagnostic imaging*; D005910:Glioma / Q000000981:diagnostic imaging; D006801:Humans; D008579:Meningioma / Q000000981:diagnostic imaging; D009942:Organometallic Compounds; D010091:Oximes; D019690:Technetium Tc 99m Exametazime; D014055:Tomography, Emission-Computed
D009942:Organometallic Compounds; D010091:Oximes; D019690:Technetium Tc 99m Exametazime