Contrast enhanced ultrasonography versus MR angiography in aortocaval fistula: case report
نویسندگان
چکیده
منابع مشابه
Contrast-Enhanced MR Angiography
Magnetic resonance angiography (MRA) is increasingly used to evaluate arterial and venous diseases. Although the resolution of MRA is not as high as that of conventional angiography, it is sufficient to evaluate pathologic conditions in the larger vascular structures of most parts of the body. It is especially useful in patients who cannot tolerate the risks of iodinated contrast agents or arte...
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INTRODUCTION Vascular diseases typically affect the entire arterial systems, from the intracranial down to the pedal vessels. However, it is not easy to evaluate the whole-body vascular systems noninvasively within a reasonable time. Up until now, many non-contrast-enhanced MR angiography (MRA) methods have been developed based on variable principles or MR phenomena; then select the appropriate...
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Noncontrast-enhanced magnetic resonance angiography (NCE-MRA) methods have been demonstrated in anatomies throughout the body. Previously established NCE-MRA techniques suffered from long scan times or low sensitivity. Advances in hardware and software have made NCE-MRA scan times clinically feasible. Recent concerns over the safety of gadolinium-based contrast material combined with the expens...
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An MR angiographic technique, referred to as 3D TRICKS (3D time-resolved imaging of contrast kinetics) has been developed. This technique combines and extends to 3D imaging several previously published elements. These elements include an increased sampling rate for lower spatial frequencies, temporal interpolation of k-space views, and zero-filling in the slice-encoding dimension. When appropri...
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BACKGROUND AND PURPOSE A substantial percentage of coiled aneurysms are associated with persistent filling of an aneurysmal component due to incomplete initial treatment or re-growth. Traditionally follow-up of coiled aneurysms has consisted of repeated intra-arterial cerebral catheter angiography, an invasive procedure with associated risks. Hence, many authors have advocated the use of non-in...
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ژورنال
عنوان ژورنال: Abdominal Imaging
سال: 2009
ISSN: 0942-8925,1432-0509
DOI: 10.1007/s00261-009-9507-x