Jinei Iwasaki

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OBJECTIVE In atherothrombotic internal carotid artery or middle cerebral artery (MCA) occlusive disease, chronic hemodynamic compromise may increase the risk for cerebral ischemic damage. To determine whether selective neuronal damage demonstrated as a decrease in central benzodiazepine receptor (BZR) in the normal-appearing cerebral cortex is associated(More)
AIM The aim of this study was to evaluate the measurement of myocardial blood flow (MBF) and develop a method for producing parametric perfusion images with carbon-11 (11C-)acetate by a simple graphical analysis method. PATIENTS AND METHODS A total of 14 patients underwent dynamic PET acquisition using nitrogen-13 (13N-)ammonia and 11C-acetate at rest to(More)
UNLABELLED The pathogenesis of selective neuronal damage in internal carotid artery (ICA) occlusive disease is unclear. Imaging of the central-type benzodiazepine receptor (BZR), which is expressed by most cortical neurons, provides information on the neuronal alterations induced by ischemia in vivo. Hemodynamic ischemia due to ICA occlusive disease may(More)
(Pb-Sn-Ti)O<inf>3</inf> (PST) thin films are fabricated by the pulse laser deposition method with three ceramic targets of PbO, SnO and TiO<inf>2</inf> with consecutive sequences of deposition. Lattice parameters of PST thin film are a=b=0.3993 nm, c=0.4048 nm. This fact together with TEM-EDX results suggests that PST films are the mixed state of(More)
The color Doppler flow imaging (CDFI) technique was used to study the dynamics of cerebrospinal fluid (CSF) flow in 13 infants with intracranial hemorrhage. CDFI was performed 46 times in 6 intraventricular hemorrhage (IVH) patients and 7 subarachnoid hemorrhage (SAH) patients with or without subdural hemorrhage during different stages. CSF flow was(More)
AIM N-ammonia and C-acetate are well-known tracers useful for the measurement of myocardial blood flow. Some studies reported that the measurement of C-acetate showed better statistical quality than that with N-ammonia. To evaluate this difference, we focused on the early-phase tracer kinetics in blood and lung. The tracer kinetics in the myocardium,(More)
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