نتایج جستجو برای: magnetic resonance angiography (mra).

تعداد نتایج: 440373  

Journal: :bulletin of emergency and trauma 0
mohammad farahmand md, assistant professor of community medicine, shiraz university of medical sciences, shiraz, iran siamak farahangiz mahnaz yadollahi

o bjectives: to determine the diagnostic accuracy of magnetic resonance angiography (mra) compared to intra-arterial digital subtraction angiography (dsa) in detection of intracranial aneurysms in those suffering from acute subarachnoid hemorrhage (sah). m e thods: this observational diagnostic study was performed at a tertiary teaching hospital and reference center in shiraz, iran. we included...

Journal: :iranian journal of radiology 0
yu-ching cheng department of radiology, taichung veterans general hospital, taichung, taiwan hung-chieh chen department of radiology, taichung veterans general hospital, taichung, taiwan chen-hao wu department of radiology, taichung veterans general hospital, taichung, taiwan; department of medical imaging and radiological sciences, central taiwan university of science and technology, taichung, taiwan; department of radiology, taichung veterans general hospital, taichung, taiwan. fax: +886-423595046 yi-ying wu department of radiology, taichung veterans general hospital, taichung, taiwan ming-his sun department of neurosurgery, taichung veterans general hospital, taichung, taiwan wen-hsien chen department of radiology, taichung veterans general hospital, taichung, taiwan

background traditional digital subtraction angiography (dsa) is currently the gold standard diagnostic method for the diagnosis and evaluation of cerebral arteriovenous malformation (avm) and dural arteriovenous fistulas (davf). objectives the aim of this study was to analyze different less invasive magnetic resonance angiography (mra) images, time-resolved mra (tr-mra) and three-dimensional ti...

Journal: :Annals of vascular diseases 2010
Kunihiro Yoshioka Ryoichi Tanaka

Magnetic resonance imaging (MRI) and magnetic resonance angiography (MRA) play a critical role in diagnosing aortic disease such as aortic dissection and aneurysm. Additionally, the advent of contrast-enhanced MRA has allowed MRA to advance markedly and several new imaging techniques to emerge as well. While computed tomography (CT) angiography using multidetector-row CT is a significant innova...

Journal: :Neurology 2007
E Feldmann J L Wilterdink A Kosinski M Lynn M I Chimowitz J Sarafin H H Smith F Nichols J Rogg H J Cloft L Wechsler J Saver S R Levine C Tegeler R Adams M Sloan

BACKGROUND Transcranial Doppler ultrasound (TCD) and magnetic resonance angiography (MRA) can identify intracranial atherosclerosis but have not been rigorously validated against the gold standard, catheter angiography. The WASID trial (Warfarin Aspirin Symptomatic Intracranial Disease) required performance of angiography to verify the presence of intracranial stenosis, allowing for prospective...

2013
D Dey A Schuhbaeck Q Yang Z Fan G Germano S Achenbach D Li P Slomka

Background Contrast-enhanced whole heart coronary Magnetic Resonance Angiography (MRA) at 3.0 Tesla (T) allows noninvasive detection of obstructive stenoses. Automated vessel segmentation and tracking of centerlines is important for quantitative measurement of stenosis, but remains challenging for coronary MRA. We aimed to develop and validate automated coronary artery segmentation from contras...

2016
Carmen Sebastià Alejandro D. Sotomayor Blanca Paño Rafael Salvador Marta Burrel Albert Botey Carlos Nicolau

PURPOSE To evaluate the accuracy of unenhanced magnetic resonance angiography (U-MRA) using balanced steady-state free precession (SSFP) sequences with inversion recovery (IR) pulses for the evaluation of renal artery stenosis. MATERIALS AND METHODS U-MRA was performed in 24 patients with suspected main renal artery stenosis. Two radiologists evaluated the quality of the imaging studies and t...

Journal: :Journal of Nippon Medical School = Nippon Ika Daigaku zasshi 2015
Koichi Nomura Masahiro Mishina Seiji Okubo Satoshi Suda Ken-ichiro Katsura Yasuo Katayama

A 33-year-old man presented with a lateral medullary infarction, vertigo, and nausea. At the time of hospital admission, he had Wallenberg syndrome. Although initial magnetic resonance imaging showed no abnormalities, subsequent diffusion-weighted magnetic resonance imaging showed a high-intensity area in the right lateral medulla oblongata. The right vertebral artery was shown to be dilated on...

Journal: : 2021

Purpose: To assess the usefulness and reproducibility of magnetic resonance angiography (MRA) for evaluation intracranial aneurysms treated by endovascular coiling.

2015

Magnetic resonance angiography (MRA) or magnetic resonance venography (MRV) can be used as a first line investigation of intracranial vascular disease. It is an alternative to invasive intra-catheter angiography that was once the mainstay for the investigation of intracranial vascular disease. MRA/MRV may use a contrast agent, gadolinium, which is non-iodine-based, for better visualization. It ...

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