Utilizing SENSE to reduce scan duration in high-resolution contrast-enhanced renal MR angiography
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...
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 کاملNon-contrast enhanced renal MR angiography – why now?
Background to magnetic resonance angiography The potential to use MRI for angiography has been realised since the 1980s. Early techniques were non-contrast methods using the difference in signal between flowing blood and stationary tissue. Time of flight (TOF) and phase contrast (PC) techniques became widely used by the early 1990s but had many drawbacks. Though an advantage of these methods wa...
متن کامل[Duration of enhancement and scan timing in three-dimensional contrast-enhanced MR angiography using the elliptical centric phase-encoding technique].
In the present study, we quantitatively investigated the relationship between the signal intensity in a vessel and the duration of contrast enhancement as well as scan timing in 3D contrast-enhanced MR angiography using an elliptical centric phase-encoding technique. A tube phantom filled with Gd-DTPA, acting as a vessel, was taken out from the field of view during data acquisition, by using th...
متن کامل3T high-spatial-resolution contrast-enhanced MR angiography of the intracranial venous system with parallel imaging.
The diagnostic image quality of contrast-enhanced (CE) 3D MR venography (MRV) was prospectively compared with that of 2D time-of-flight (TOF) MRV and contrast-enhanced 3D magnetization-prepared rapid acquisition of gradient echo (MPRAGE) sequences for the visualization of the intracranial venous system at 3T in 22 patients. CE MRV provides high-quality images and was shown to be superior to TOF...
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ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 2006
ISSN: 1053-1807,1522-2586
DOI: 10.1002/jmri.20691