title: [Regional cerebral blood flow measured by three-dimensional stereotactic surface projections (3D-SSP) of 123I-IMP SPECT in Parkinson disease patients with cognitive impairment].
abstract: We investigated the regional cerebral blood flow (rCBF) in 8 patients with Parkinson disease (PD) with cognitive impairment (age; 64-82 years, Mini-Mental State Examination score = MMSE score; 22-6 points, Yahr stage; III-V), with the standard transaxial images and the Z-score images using the three-dimensional stereotactic surface projections (3D-SSP) of 123I-IMP SPECT. A contrast database was created by averaging extracted database sets of the contrast group (numbers; 14 cases, age; 64-82 years, MMSE score; > or = 29 points). The regions of the perfusion reduction shown on the standard transaxial images were similarly demonstrated on the Z-score images in 6 of the 8 patients, and only the Z-score images demonstrated definite regions of perfusion reduction in remaining 2 patients. Both the standard transaxial and Z-score images demonstrated the perfusion reduction in the temporo-parietal regions in all of the patients, and the Z-score images but not the standard transaxial ones detected the reduction in the posterior cingulate gyrus and precuneus in 3 patients. 3D-SSP images of 123I-IMP SPECT are thus more sensitive in detecting rCBF of the medial aspect of the parietal cortex than the standard transaxial images, and can be used as a diagnostic tool to objectively evaluate the cognitive function of PD patients.
authors.affiliation: Department of Neurology, Saiseikai Matsusaka General Hospital.
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Sakai
authors.forename: Shigeki
authors.initials: S
authors.lastname: Kuzuhara
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000150:complications / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D002560:Cerebrovascular Circulation; D003072:Cognition Disorders / Q000150:complications / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D007457:Iodine Radioisotopes; D020367:Iofetamine; D008297:Male; D008875:Middle Aged; D019275:Radiopharmaceuticals; D012680:Sensitivity and Specificity; D015899:Tomography, Emission-Computed, Single-Photon / Q000379:methods*
chemical_list: D007457:Iodine Radioisotopes; D019275:Radiopharmaceuticals; D020367:Iofetamine