منابع مشابه
Evaluation of the renal arteries: Comparison of two types of Non-contrast MRA and Dynamic contrast MRA
Introduction; Dynamic contrast MR angiography (C MRA) has made a major role for evaluation of cardiovascular diseases. For evaluation of patients with renal insufficiency or history with adverse reactions, MR contrast media cannot be used. Non-contrast (NC) MRAs with several techniques have been introduced. Currently, we used two types of MRA; FIESTA with flow preparation pulse (Flow-Prep) base...
متن کاملInhance (Inflow Inversion Recovery) Non-contrast Renal MRA: Comparison with 3D Gadolinium Enhanced MRA in Clinical Patients
Purpose: Contrast-enhanced MR Angiography (CE-MRA) is a widely accepted technique for evaluation of the renal arteries; however, recent concerns regarding the development of nephrogenic systemic fibrosis (NSF) after gadolinium contrast agent administration in patients with reduced renal function have emphasized the need for robust non-contrast MRA methods. One such technique is steady state fre...
متن کاملFlow-independent, Non-contrast-enhanced, Free Breathing Renal MR Angiography
Introduction Non-contrast-enhanced MR angiography (MRA) techniques are particularly relevant for patients with compromised renal function, as is often the case in suspected renovascular hypertension. Many noncontrast-enhanced MRA techniques rely on in-flow of blood for artery-to-background contrast. This flowdependence can cause post-stenotic signal voids secondary to decreased and/or turbulent...
متن کاملGhost Imaging and Flow-Insensitive Unenhanced MRA
Peripheral vascular disease (PVD) has an age-adjusted prevalence of 12% in the United States, causes significant morbidity and is associated with excess cardiovascular mortality. Contrastenhanced magnetic resonance angiography (CE-MRA) often substitutes for the more invasive ―gold standard‖ procedure of digital subtraction angiography (DSA). Given the frequency of renal functional impairment in...
متن کاملWhole-Heart Coronary MRA
Background MRI was first reported to visualize the ostia of the coronary arteries in the late 1980’s (1, 2). Tremendous progress has been made in coronary MRA ever since. One of the milestones was the acquisition of k-space data in a segmented mode (3, 4), allowing collection of an entire data set within multiple heartbeats. Early coronary MRA studies used two-dimensional (2D) technique to acqu...
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ژورنال
عنوان ژورنال: Current Protocols in Magnetic Resonance Imaging
سال: 2003
ISSN: 2572-5637,2572-5637
DOI: 10.1002/0471142719.mia2801s11