全部文献期刊会议图书|学者科研项目
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作者:Kenji Ishii , Muneyuki Sakata ...
来源:[J].European Journal of Nuclear Medicine and Molecular Imaging(IF 5.114), 2017, Vol.44 (5), pp.850-857
摘要:The aim of this study was to assess the inter-rater variability of the visual interpretation of 11C-PiB PET images regarding the positivity/negativity of amyloid deposition that were obtained in a multicenter clinical research project, Japanese Alzheimer’s Disease...
作者:Kenji Ishii , Hyuma Makizako ...
来源:[J].Journal of NeuroEngineering and Rehabilitation(IF 2.567), 2017, Vol.14 (1)
摘要:Physical activity may preserve neuronal plasticity, increase synapse formation, and cause the release of hormonal factors that promote neurogenesis and neuronal function. Previous studies have reported enhanced neurocognitive function following exercise training. However, the spe...
作者:Kenji Ishii , Shigeo Murayama ...
来源:[J].Biomarker Research, 2017, Vol.5 (1)
摘要:Because soluble (or secreted) amyloid precursor protein-β (sAPPβ) and -α (sAPPα) possibly reflect pathological features of Alzheimer’s disease (AD), they are potential biomarker candidates for dementia disorders, including AD and mild cognitive impairment (MCI) due to A...
作者:... Kiichi Ishiwata , Masayuki Sasaki , Kenji Ishii
来源:[J].Radiological Physics and Technology, 2017, Vol.10 (4), pp.422-430
摘要:The present study aimed to validate the effects of a novel tungsten-impregnated rubber neck shield on the quality of phantom and clinical 15O-labeled gas positron emission tomography (PET) images. Images were acquired in the presence or absence of a neck shield fr...
作者:... Taketoshi Maehara , Kenji Ishii , Tadashi Nariai
来源:[J].Journal of Clinical Neuroscience(IF 1.253), 2020, Vol.72, pp.258-263
摘要:Abstract(#br)It is unclear whether the visual assessment of noninvasive arterial spin labeling magnetic resonance imaging (ASL) can identify instances of hemodynamic compromise including an elevated oxygen extraction fraction (OEF) measured by 15 O-gas positron emission tomograph...
作者:Kenji Ishii , Kazumasa Inoue
来源:[J].Physica Medica(IF 1.167), 2018, Vol.47, pp.73-79
摘要:Abstract(#br)Purpose(#br)The Bayesian penalized-likelihood reconstruction algorithm (BPL), Q.Clear, uses relative difference penalty as a regularization function to control image noise and the degree of edge-preservation in PET images. The present study aimed to determine th...
作者:Kenji Ishii , Shigeki Aoki
来源:[J].Journal of Stroke and Cerebrovascular Diseases(IF 1.984), 2019, Vol.28 (4), pp.1113-1125
摘要:Abstract(#br)Background and Purpose(#br)Chronic ischemia may induce brain microstructural damage and lead to neurocognitive dysfunction in patients with Moyamoya disease (MMD). We applied neurite orientation dispersion and density imaging (NODDI) and 15 O-gas positron emissi...
作者:... Masashi Kameyama , Jun Toyohara , Kenji Ishii
来源:[J].Physica Medica(IF 1.167), 2017, Vol.42, pp.203-210
摘要:Abstract(#br)Purpose(#br)This study aimed to determine whether the SiPM-PET/CT, Discovery MI (DMI) performs better than the PMT-PET/CT system, Discovery 710 (D710).(#br)Methods(#br)The physical performance of both systems was evaluated using NEMA NU 2 standards. Contrast (%), uni...
作者:... Jun Toyohara , Kiichi Ishiwata , Kenji Ishii
来源:[J].Neuropharmacology(IF 4.114), 2018, Vol.143, pp.106-112
摘要:Abstract(#br)Istradefylline, an adenosine A 2A receptor (A 2A R) antagonist, is effective as an adjunct to levodopa and can alleviate “off” time and motor symptoms in patients with Parkinson's disease (PD). The present study aimed to calculate occupancy rates of A 2A Rs by a...

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