نتایج جستجو برای: magnetic resonance angiography mra

تعداد نتایج: 440373  

Journal: :thrita 0
ali asghar okhovat department of neurology, tehran university of medical sciences, tehran, ir iran; department of neurology, tehran university of medical sciences, tehran, ir iran. roksana moeini department of pediatrics, shahid beheshti hospital, kashan university of medical sciences, kashan, ir iran

case presentation we report a 5-year-old boy, who was presented with sudden right hand monoparesis and dysarthria. conclusions the patient was investigated with magnetic resonance angiography and diagnosed as md. introduction moyamoya disease (md) is a disorder caused by blocked arteries at the base of the brain. as the normal blood vessels narrow and become blocked, a person may suffer a strok...

Journal: :Blood 2004
Miguel R Abboud Joel Cure Suzanne Granger Dianne Gallagher Lewis Hsu Winfred Wang Gerald Woods Brian Berman Don Brambilla Charles Pegelow Jonathan Lewin Robert A Zimmermann Robert J Adams

The stroke prevention study in sickle cell disease (STOP) demonstrated a 90% reduction in stroke risk with transfusion among patients with time-averaged mean cerebral blood velocity (TAMV) of 200 cm/s or more as measured by transcranial Doppler (TCD). In STOP, 232 brain magnetic resonance angiograms (MRAs) were performed on 100 patients, 47 in the transfusion arm and 53 in the standard care arm...

2016
Yu-Ching Cheng Hung-Chieh Chen Chen-Hao Wu Yi-Ying Wu Ming-His Sun Wen-Hsien Chen Jyh-Wen Chai Clayton Chi-Chang Chen

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 ...

Journal: :Stroke 2010
Joanna D Schaafsma Hendrik Koffijberg Erik Buskens Birgitta K Velthuis Yolanda van der Graaf Gabriël J E Rinkel

BACKGROUND AND PURPOSE To follow up patients with coiled intracranial aneurysms, magnetic resonance angiography (MRA) is a promising noninvasive alternative to current standard intra-arterial digital subtraction angiography (IA-DSA). MRA test results do not always concord with those of IA-DSA, and the impact of discrepancies on health benefits and costs is unknown. We evaluated the cost-effecti...

2005
Sumeesh Dhawan

Ischemic heart disease is the leading cause of death worldwide. At present, coronary angiography is the gold standard for the diagnosis of coronary artery disease. Conventional coronary angiography is an invasive procedure with a small, yet inherent risk of myocardial infarction, stroke, potential arrhythmias, and death. Other noninvasive diagnostic tools, such as electrocardiography, echocardi...

2014
Emer Sonnex Indrajeet Das Richard Coulden

Background Non-contrast enhanced, EKG-triggered, navigator 3DSSFP magnetic resonance angiography (NCE-MRA) is a robust technique but suffers from long scan acquisition times. Depending on heart and respiratory rates, acquisition times can still be prohibitively long. We describe the use of an abdominal compression band to reduce respiratory motion and image acquisition time with no sacrifice of...

Journal: :Evidence report/technology assessment 2002
R T Meenan S Saha R Chou K Swarztrauber K P Krages M O'Keefee-Rosetti M McDonagh B K S Chan M C Hornbrook M Helfand

Specific interventions included in the review Studies of imaging strategies were eligible for inclusion: transthoracic echocardiography (TTE), transoesophageal echocardiography (TEE), carotid ultrasound (CUS), magnetic resonance imaging (MRA) and cerebral angiography. Other ultrasonic strategies and noninvasive carotid imaging techniques were excluded. The review also investigated the efficacy ...

2007
C. J-P. François V. Deshpande R. Jerecic P. Weale J. C. Carr K. Dill

Magnetic resonance angiography (MRA) is a valuable method of evaluating the thoracic aorta in a variety of clinical situations, including assessing patients with aneurysms, pseudoaneurysms, intramural hematomas, penetrating ulcerative plaques, dissections, stenoses, or congenital anomalies. Various MR techniques have been validated to assess the size and morphology of the aorta. 2 Current MRA p...

2000
Alejandro F. Frangi Wiro J. Niessen Paul J. Nederkoorn Otto E.H. Elgersma Max A. Viergever

A model-based technique for quantitative analysis of three-dimensional magnetic resonance angiography (MRA) is presented. The model consists of a deformable B-spline representation of the central vessel axis and the vessel wall. An efficient interaction mechanism to initialize the models in a three-dimensional setting is devised. Two novel image features are introduced in order to deform the ce...

Journal: :Japanese Journal of Gynecologic and Obstetric Endoscopy 2022

Unicornuate uterus with a rudimentary horn represents Müllerian duct anomaly. We describe three women aged 20, 18, and 23 years unicornuate associated non-communicating horn, who underwent successful laparoscopic surgery. Studies have reported high incidence of endometriosis this Therefore, prevention progressive resection are recommended as treatment. performed removal ipsilateral fallopian tu...

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