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Abstract #3231

Improved blood flow velocity measurement in superficial perforating arteries of the white matter at 7 tesla MRI

Lennart J. Geurts1, Geert Jan Biessels2, and Jaco J. M. Zwanenburg1

1Radiology, UMC Utrecht, Utrecht, Netherlands, 2Brain Center Rudolf Magnus, UMC Utrecht, Utrecht, Netherlands

7T 2D Qflow is capable of measuring blood flow velocity in the superficial perforating arteries. These arteries run though the semi oval center of the white matter in the brain and have diameters smaller than 200 ┬Ám. Due to the small diameters, partial volume effects of perforators with surrounding tissue cause velocity underestimation. With simulations and experiments we show that tilt optimized nonsaturated excitation (TONE) significantly increases SNR and decreases velocity underestimation in superficial perforating arteries.

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