Download PDF by Angelo Vanzulli MD (auth.), E. Neri, M. Cosottini, D.: MR Angiography of the Body

By Angelo Vanzulli MD (auth.), E. Neri, M. Cosottini, D. Caramella (eds.)

ISBN-10: 3540797165

ISBN-13: 9783540797166

Magnetic resonance angiography (MRA) maintains to endure interesting technological advances which are swiftly being translated into scientific perform. It additionally has glaring benefits over different imaging modalities, together with larger sufferer protection in comparison with CT angiography and enhanced accuracy and distinction solution in comparison with ultrasonography. via quite a few top of the range illustrations, this booklet stories the present function of MRA of the physique. it's divided into 3 sections. the 1st part is dedicated to concerns with regards to picture acquisition procedure and sequences. person chapters specialise in flow-based MRA, distinction media, contrast-enhanced MRA, artifacts, and picture processing. the second one and crucial component of the publication addresses the scientific functions of MRA in a variety of elements of the physique, together with the neck vessels, the backbone, the thoracic aorta and pulmonary vessels, the guts and coronary arteries, the stomach aorta and renal arteries, and peripheral vessels. The position of the blood pool distinction brokers for the prognosis and characterization of vascular sickness is totally explored. the ultimate part considers the function of MRA in sufferers present process liver or pancreas and kidney transplantation. This booklet could be a useful reduction to all radiologists who paintings with MRA.

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J Comput Assist Tomogr 10:473–483 Pusey E, et al. (1986) Magnetic resonance imaging artifacts: Mechanism and clinical significance. Radiographics 6: 891–911 Zhang H, et al. (2007) 3D contrast-enhanced MR angiography. 6 Virtual Endoscopy (VE) 41 References 35 37 39 40 43 Magnetic resonance angiography (MRA) sequences generate an amount of data that represents the signal intensity of voxels from the image volume, distributed on consecutive slices and oriented on a user-defined plane. In particular, the availability of wide anatomic coverage coils and high-field scanners, together with fast sequences and high relaxivity contrast media, allows to easily obtain MRA series formed by a high number of thin slices, usually partially overlapped on each other.

In addition, the signal of turbulent spins can be fully recovered using a short TE variable between 4 and 6 ms. In relation to MR-A of vertebral arterials, the same phenomenon of turbulence can determine the Artifacts in MR-Angiography vertebral arterials, this pitfall can determine mistaken diagnosis of occlusion of one of the two arteries. Therefore the mis-visualization of a vertebral artery with acquisition of volume according to the coronal plane cannot lead to a diagnosis of occlusion but should suggest the presence of the “theft of succlavia” syndrome.

DSA shows a 75% stenosis (NASCET grade IV) of the left ICA; on thin-MIP (a) Fig. 4. Figure shows alignment of preferential arterial-phase enhancement for different k-space fi lling schemes used for CE-MRA. , low spatial frequency data) should be acquired during the plateau phase of arterial enhancement. 6 Conclusions MRA has evolved rapidly since the early studies by Prince et al. (1993), becoming a reference technique for noninvasive assessment of vascular anatomy, and hemodynamic significance of stenoses, particularly suited in pediatric patients.

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MR Angiography of the Body by Angelo Vanzulli MD (auth.), E. Neri, M. Cosottini, D. Caramella (eds.)

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