[Usefulness of rCBF SPECT in patients with encephalitis: comparison study with MRI].
Twenty-nine rCBF SPECT study was done in 17 patients with encephalitis. Five of 6 patients (83.3%) showed regional high uptake in acute phase within a week after onset and 16 of 23 studies (69.6%) showed regional low uptake in subacute and chronic phase. Six of 19 lesions (31.6%) with regional high uptake changed to low uptake and 11 lesions (57.9%) improved to normal uptake on follow up studies. Seventeen of 51 lesions with low uptake (33.3%) improved to normal uptake. On the comparative study with MRI, 8 of 18 (44.4%) high uptake area showed cortical thickness or high intensity on T2 weighted images. Thirty-six of 74 low uptake area (48.6%) showed cortical thickness, brain atrophy or high intensity on T2 weighted images. Forty-eight of 212 regions (22.6%) with normal MRI findings showed abnormal accumulation of cerebral tracer on rCBF SPECT studies. rCBF SPECT was useful tool for diagnosis and follow up management in patients with encephalitis.
Nagamachi
S
S
Department of Radiology, Miyazaki Medical College.
Jinnouchi
S
S
Flores
L G
LG
Kodama
T
T
Itokazu
N
N
Nakahara
H
H
Ohnishi
T
T
Futami
S
S
Watanabe
K
K
D000293:Adolescent; D000328:Adult; D001921:Brain / Q000000981:diagnostic imaging* / Q000473:pathology*; D002560:Cerebrovascular Circulation; D002648:Child; D002675:Child, Preschool; D004660:Encephalitis / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000503:physiopathology; D018792:Encephalitis, Viral / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000503:physiopathology; D005260:Female; D006801:Humans; D007223:Infant; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D015899:Tomography, Emission-Computed, Single-Photon