نتایج جستجو برای: magnetic resonance angiography mra

تعداد نتایج: 440373  

Journal: :American journal of hypertension 1997
C T Postma F B Joosten G Rosenbusch T Thien

In this prospective study we examined the value of magnetic resonance angiography (MRA) in the imaging of the proximal renal arteries, with the main aim of detecting renal arterial stenosis, as compared with intraarterial digital subtraction angiography. The study was done among a group of 38 hypertensive patients seen in the outpatient department of the department of medicine of our university...

2009
H. Kramer V. M. Runge K. D. Williams L. G. Naul K. Nikolaou M. F. Reiser B. J. Wintersperger

Purpose: Since the introduction of magnetic resonance imaging (MRI) in clinical routine vascular imaging always has been a challenge. Early MR angiography (MRA) techniques were based on intrinsic contrast mechanisms related to blood (non CE techniques). The development of contrast enhanced (CE) MRA techniques using gadolinium based contrast agents (GBCA) substantially changed vascular MR applic...

Journal: :Journal of surgery and medicine 2022

Moyamoya disease is extremely rare. In children, it one of the rare causes ischemic stroke. We present a 4-year-old female patient diagnosed with Magnetic Resonance Imaging (MRI) and Angiography (MRA). case chronic lacunar infarct in white matter on magnetic resonance imaging, cigarette smoke image characterized by diffuse collateral vascular networks was observed MRA imaging. Since rare, we th...

Journal: :The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques 2006
Anna I Tomanek Shelagh B Coutts Andrew M Demchuk Mark E Hudon William E Morrish Robert J Sevick Jessica E Simon Richard Frayne Alastair M Buchan Michael D Hill

BACKGROUND AND PURPOSE Accuracy of intracranial magnetic resonance angiography (MRA) and reliability of interpretation are not well established compared to conventional selective catheter angiography. The purpose of this study was to determine the accuracy of MRA in evaluation of intracranial vessels in acute stroke and transient ischemic attack (TIA) patients METHODS Twenty-nine patients (se...

Journal: :Vascular Health and Risk Management 2008
Mathias Goyen

Gadofosveset (Vasovist, Bayer Schering Pharma AG, Berlin/Germany) is the first intravascular contrast agent approved for use with magnetic resonance angiography in the European Union, Switzerland, Turkey, Canada, and Australia. Gadofosveset reversibly binds to albumin providing extended intravascular enhancement compared wth existing extracellular magnetic resonance contrast agents. Prior to ap...

Three major arteries normally originate from the aortic arch. Variations of the aortic arch branches are observed in some cases. Rare variation of the aortic arch branches is originated from the retroesophageal right subclavian (RRS) artery as the last branch of the aortic arch. Variation of artery is possibly associated with the variation of the recurrent laryngeal nerve. This research p...

2016
Gang Wu Teng Jin Ting Li John Morelli Xiaoming Li

The aim of this study was to compare diagnostic value of high spatial resolution time-resolved magnetic resonance angiography with interleaved stochastic trajectory (TWIST) using Gadobutrol to Computed tomography angiography (CTA) for preoperative evaluation of lower extremity tumors.This prospective study was approved by the institutional review board. Fifty consecutive patients (31 men, 19 wo...

Journal: :anatomical sciences journal 0
bahman jalali kondori department of anatomical sciences, school of medical sciences, baqiyatallah university, tehran, iran. elham rahimian andisheh badie rayan research institute, tehran, iran mohammad hossein asadi andisheh badie rayan research institute, tehran, iran majid reza tahsini andisheh badie rayan research institute, tehran, iran

three major arteries normally originate from the aortic arch. variations of the aortic arch branches are observed in some cases. rare variation of the aortic arch branches is originated from the retroesophageal right subclavian (rrs) artery as the last branch of the aortic arch. variation of artery is possibly associated with the variation of the recurrent laryngeal nerve. this research provide...

2011
Michael Schonberger Aya Kino Andrada Popescu Maurizio Galizia Jeremy Collins Timothy Carroll James Carr

Objective The purpose of this study was to evaluate Time-resolved MR venography (TR-MRV) of the pulmonary venous circulation using the time-resolved angiography with interleaved stochastic trajectories (TWIST) method of time-resolved MRA (TR-MRA) and compare it with the more commonly used conventional Contrast enhanced magnetic resonance angiography (CE-MRA) approach in atrial fibrillation pati...

2009
F. Kara

Introduction Many neurodegenerative diseases including Alzheimer’s disease are linked to abnormalities in vascular system. Visualization of the changes in vascular structure is important for early diagnosis and treatment. Blood vessels can be imaged non-invasively by magnetic resonance angiography (MRA) [1]. In this technique shortening of the effective T1 of moving blood provides the vessel co...

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