Abstract #0778

Utilizing High Performance Gradients to Image Human Brain Arterial Vasculature with High Resolution 7T Time-of-flight MR Angiography

Samantha J Ma¹, Alexander JS Beckett^2,3, Gerhard Laub⁴, and David A Feinberg^2,3

¹Siemens Medical Solutions USA, Inc., Berkeley, CA, United States, ²Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, United States, ³Advanced MRI Technologies, Sebastopol, CA, United States, ⁴Dr. Laub Consulting, LLC, San Mateo, CA, United States

Synopsis

Keywords: Blood vessels, High-Field MRITime of flight (TOF) 3D MR Angiography (MRA) has been shown to effectively image small (50-300um diameter) pial vessels. However, such high resolution requires strong flow compensation (flow-comp) gradient pulses and short echo times which are limited by peripheral nerve stimulation and hardware capability in most scanners. We demonstrate high resolution TOF MRA acquisition using an advanced head gradient system (200mT/m, 900 T/m/s) at ultrahigh field 7T.

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