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Efficacy of Direct Revascularization in Adult Moyamoya Disease: Haemodynamic Evaluation by Positron Emission Tomography (1999)

Morimoto, M. ; Iwama, T. ; Hashimoto, N. ; [et al.]

Springer

Acta neurochirurgica 141 (1999), S. 377-384

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ISSN: 0942-0940

Keywords: Keywords: Adult; direct revascularization; Moyamoya disease; positron emission tomography.

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Summary To evaluate the efficacy of direct cerebrovascular reconstruction to prevent intracranial bleeding from the point of view of haemodynamic status, we performed positron emission tomography (PET) studies in 5 adult patients with Moyamoya disease before and after superficial temporal artery to middle cerebral artery (STA-MCA) anastomosis. Regional cerebral blood flow (rCBF), regional cerebral metabolic rate of oxygen (rCMRO2) and regional oxygen extraction fraction (rOEF) in the MCA territories and regional cerebral blood volume (rCBV) in the striatum were measured before and after STA-MCA anastomosis. Correlation between the change of these PET parameters and post-operative decreased opacification of Moyamoya vessels were analyzed. Pre-operatively, significant elevation of rCBV were observed in the basal ganglia as well as significant reduction of rCBF and elevation of rOEF with reduction of rCMRO2 in the MCA territories, indicating “misery” perfusion in the cerebral hemisphere and blood pooling in the Moyamoya vessels under increased haemodynamic stress. Post-operative PET study showed improvement of misery perfusion and reduction of rCBV in the basal ganglia. Reduction of rCBV in the basal ganglia generally compatible with decreasing Moyamoya vessels on angiographic findings. Our results suggests that direct bypass surgery could have a potential both for decreasing haemodynamic stress on Moyamoya vessels and to improve misery perfusion in the hemisphere.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/s007010050313

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High resolution chemically bonded fused-silica capillary gas chromatography of organochlorine insecticides and related compounds in arable soil samples (1986)

Suzuki, M. ; Morimoto, M.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 9 (1986), S. 692-698

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ISSN: 0935-6304

Keywords: Gas chromatography, GC ; Fused silica capillary column ; Organochlorine insecticide residues ; Arable soils ; Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Electron capture gas chromatography with three chemically bonded fused-silica capillary columns (CB-FSCs), OV-17, OV-1701, and SE-52, was performed to evaluate peak separability of 28 organochlorine insecticides and related compounds. Relative retention times and relative peak heights to aldrin were measured and calculated. OV-17 CB-FSC showed the best separability among the three CB-FSCs employed and was applied to analysis of extracts from several soil samples with minimum clean-up procedure. The chromatograms obtained demonstrated steady baseline tracings free of interference. Residue data from soil samples were also tabulated.

Additional Material: 4 Ill.