[Evaluation of remote effect to supratentorial areas in cerebellar infarction: a semiquantitative analysis using 99mTc-HM-PAO SPECT].
We studied 18 patients with unilateral cerebellar infarction to investigate its remote effect to the supratentorial areas with 99mTc-HM-PAO SPECT. Asymmetry indexes (AI) were calculated in the cerebellum and in seven supratentorial areas (thalamus, basal ganglia, superior and inferior frontal areas, temporal area, parietal area and occipital area). Mean AIs of supratentorial areas ranged from -0.64 +/- 2.74% to +1.04 +/- 2.03%. In cerebellar infarction of acute or subacute phase, the mean AI showed larger values (+1.13%) than that of chronic phase (+0.21%), but this difference did not reach statistical significance. There was no significant difference among supratentorial AIs grouped according to cerebellar infarction size. There was also no significant correlation among AIs of cerebellar and the supratentorial areas (r = -0.32 to +0.38). Crossed hemispheric hypoperfusion is thought to be related to the interruption of cerebellocortical tracts. We concluded that the detection of the remote effect to supratentorial areas in cerebellar infarction was difficult with 99mTc-HM-PAO SPECT.
Hirose
Y
Y
Department of Radiology, Osaka University Medical School.
Hayashida
K
K
Fukuoka
S
S
Ishida
Y
Y
Nishimura
T
T
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001921:Brain / Q000098:blood supply* / Q000000981:diagnostic imaging; D002526:Cerebellar Diseases / Q000000981:diagnostic imaging / Q000503:physiopathology*; D002544:Cerebral Infarction / Q000000981:diagnostic imaging / Q000503:physiopathology*; D002560:Cerebrovascular Circulation; D005260:Female; D005625:Frontal Lobe; D006801:Humans; D008297:Male; D008875:Middle Aged; D015609:Organotechnetium Compounds; D010091:Oximes; D015899:Tomography, Emission-Computed, Single-Photon
D015609:Organotechnetium Compounds; D010091:Oximes