نتایج جستجو برای: hypoperfusion ischemialtpmemoryrat

تعداد نتایج: 3472  

Journal: :Journal of neurology, neurosurgery, and psychiatry 1992
H Sawada F Udaka M Kameyama N Seriu K Nishinaka K Shindou M Kodama N Nishitani K Okumiya

Dementia in Parkinson's disease is thought to be attributable not only to subcortical lesions but also to cortical alterations, especially frontal lobe dysfunction. To evaluate cortical function, the regional cerebral blood flow (rCBF) was estimated of 13 demented and 13 non-demented age matched patients with Parkinson's disease compared with that of 10 age matched controls using I-123 iodoamph...

Journal: :Stroke 2014
Kenichiro Yata Yuhei Nishimura Miyuki Unekawa Yutaka Tomita Norihiro Suzuki Toshio Tanaka Akira Mizoguchi Hidekazu Tomimoto

BACKGROUND AND PURPOSE Proper brain function is maintained by an integrated system called the neurovascular unit (NVU) comprised cellular and acellular elements. Although the individual features of specific neurovascular components are understood, it is unknown how they respond to ischemic stress as a functional unit. Therefore, we established an in vivo imaging method and clarified the NVU res...

2018
Masafumi Ihara Kazuo Washida

Many studies have shown a relationship between atrial fibrillation (AF) and vascular dementia. AF is a major risk factor for stroke, and stroke is the greatest risk factor for vascular dementia. However, the relationship between Alzheimer's disease (AD), the leading cause of dementia, and AF remains unclear. At least four epidemiological studies have reported AF significantly raises the risk of...

Journal: :Stroke 2009
Olivier Zaro-Weber Walter Moeller-Hartmann Wolf-Dieter Heiss Jan Sobesky

BACKGROUND AND PURPOSE Perfusion-weighted MRI-based maps of cerebral blood flow (CBF(MRI)) are considered a good MRI measure of penumbral flow in acute ischemic stroke but are seldom used in clinical routine due to methodical issues. We validated CBF(MRI) on quantitative CBF measurement by 15O-water positron emission tomography (CBF(PET)). MATERIAL AND METHODS Comparative CBF(MRI) and CBF(PET...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2002
Yoshifumi Sugawara Takanori Kikuchi Toshihiro Ueda Mamoru Nishizaki Shigeru Nakata Teruhito Mochizuki Junpei Ikezoe

UNLABELLED The purpose of this study was to evaluate the usefulness of SPECT during temporary carotid balloon occlusion testing and to evaluate the changes in regional cerebral blood flow (CBF) and regional cerebral perfusion reserve (CPR) after permanent carotid occlusion. METHODS Temporary balloon occlusion testing was performed on 40 patients (24 head and neck tumors, 16 aneurysms). During...

Journal: :Indian Journal of Radiology and Imaging 2006

Journal: :Journal of Investigative Medicine High Impact Case Reports 2018

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