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Advanced Neurovascular MR Angiography.

Time:

2:00 PM- 3:30 PM

Authors:

Timothy J. Carroll, J. Kevin Demarco, and Patrick A. Turski

Code: RC105

Objective:

This session includes three sections; the first is titled “Techniques: MR Angiographic Pulse Sequences” which is discussing the basic MR Imaging physics which distinguishes different pulse sequences. It also highlights the basic MR Imaging pulse sequences used on neurovascular imaging, in addition to understanding the pitfalls and artifacts commonly occurring in some of the newer MR Imaging pulse sequences. The second section, “Carotid MR Angiography and Plaque Imaging”, is discussing the technical factors for optimal large FOV carotid Contrast-enhanced MR Angiography at 1.5 and 3.0 T. This section also reviews the advantages and disadvantages of small FOV 3T MR Angiography compared with CT Angiography in the depiction of carotid bifurcation stenosis. This section increases the awareness about the current capabilities to depict carotid plaque components and their correlation with stroke or TIA. The third section, “Intracranial/Time-resolved MR Angiography”, is highlighting several new imaging techniques, such as parallel imaging and time resolved imaging, and their MR Angiography protocols. The section also recognizes the imaging features of acute, sub-acute and chronic ischemic stroke. It highlights several other topics such as distinguishing AVMs, dural AVFs and Cavernomas, in addition to discussing the limitations of MR Angiography for the detection of aneurysms. This section will update its attendee’s knowledge of dural sinus, cortical vein and deep vein thrombosis, and will discuss with them the sources of artifacts in MR Angiography and CE MR Angiography.

 

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