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Abstract #0793

Reproducibility of 4D flow MR angiography in peripheral vessels: A combined phantom and in vivo study

Martin Sieben1, Andreas Deistung1, Maik Rothe1, Richard Brill1, Walter Alexander Wohlgemuth1, and Alexander Gussew1
1University clinic and policlinic for Radiology, University Hospital Halle (Saale), Halle (Saale), Germany


Time-resolved 3D phase contrast MRA (4D flow MRA) is a technique providing morphological and quantitative 3D hemodynamic information of the blood vessel network without contrast agents and with a high temporal resolution. This study was performed to systematically validate flow measurements in peripheral vessels with high resolution, based on examinations in 4D flow phantom and in femoral vessels of healthy subjects. For this purpose, exams were run with varying spatial resolution and velocity encoding factors. It was shown, that the applied approach enables accurate and reproducible flow measurements by using venc factors of 120cm/s and isotrop spatial resolution of 1mm.

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