نتایج جستجو برای: magnetic resonance angiography
تعداد نتایج: 438422 فیلتر نتایج به سال:
lipomatosis of the nerve, also known as fibrolipomatous hamartoma, is characterized by the infiltration of the nerve by fibro-fatty tissue. the affected nerve becomes thicker, and it simulates a mass lesion. lipomatosis usually affects the median nerve and lipomatosis of the sciatic nerve is extremely rare. magnetic resonance imaging (mri) is the key to diagnosis, and it is usually pathognomoni...
conclusion these data indicate that while ce-mri will depict more positive results, there are cases in which dwi will show a positive result while ce-mri is negative. we suggest that the combination of these two imaging modalities might yield more positive results in diagnosing acute ms attack giving rise to a more accurate diagnosis. results ce-mri yielded positive results for 61 (87%) patient...
BACKGROUND Because pulmonary artery size is considered by most investigators to be a major prognosticator of outcome in patients undergoing staged Fontan reconstruction, the objective of the present study was to determine the efficacy of noninvasive measures in determining pulmonary artery size. METHODS AND RESULTS This study analyzed the T1-weighted, spin-echo magnetic resonance and echocard...
OBJECTIVE The purpose of this study was to provide a comprehensive review of the literature relating to electron beam angiography (EBA), magnetic resonance angiography, and spiral computed tomography, currently the three most promising noninvasive methods to visualize obstructions in the coronary tree. BACKGROUND Given the high costs and invasiveness of coronary angiography, there is increase...
AIMS The accuracy of magnetic resonance angiography in detecting proximal coronary artery stenoses is unclear. We postulated that fast magnetic resonance angiography is capable of (1) imaging proximal coronary arteries, and (2) detecting stenoses of > or = 50% of their luminal diameter. METHODS AND RESULTS Thirty-five patients, referred for analysis of angina pectoris, underwent both conventi...
در بین انواع نانوذره ها، نانوذره های مغناطیسی (mnps) نظر به کاربرد های بسیاری که در حوزه های مختلفی همچون مایعات مغناطیس (magnetic fluids) کاتالیز (catalysis) ، تصویربرداری رزونانس مغناطیسmagnetic resonance imaging) ) و بازسازی محیط زیست (environmental remediation) دارند توجه پژوهشگران را به خود جلب نموده اند [1]. این نانوذره ها سوپرپارامغناطیس هایی اند که می توانند جذب میدان مغاطیسی شوند اما خ...
The present paper provides general dentists with an introduction to the clinical applications and significance of magnetic resonance angiography (MRA) in the oral and maxillofacial regions. Specifically, the method and characteristics of MRA are first explained using the relevant MR sequences. Next, clinical applications to the oral and maxillofacial regions, such as identification of hemangiom...
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 ...
This review was undertaken with an eye of providing an evidence-based guide for internists in the utilization of the various techniques in the diagnosis of pulmonary emboli. Pulmonary angiography represents a group of tests that are used alone or in combination to evaluate for the presence of pulmonary emboli (PE)† and encompasses computed tomography (CT) pulmonary angiography (which is noninva...
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