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Abstract #0409

A Combined Saturation and Imaging RF-Pulse for Fast and Continuous Black-Blood Preparation in Dynamic Imaging

Simon Reiss1, Axel Joachim Krafft1,2,3, Marius Menza1, Constantin von zur Mühlen4, and Michael Bock1

1Dept. of Radiology - Medical Physics, University Medical Center Freiburg, Freiburg, Germany, 2German Cancer Consortium (DKTK), University Medical Center Freiburg, Heidelberg, Germany, 3German Cancer Research Center (DKFZ), Heidelberg, Germany, 4Department of Cardiology and Angiology I, University Heart Center, Freiburg, Germany

Black-blood preparation is a tool for improved contrast generation in cardiovascular MRI to assess vessel wall constitution, to delineate plaques and to characterize myocardial tissue. Conventionally, black-blood MRI can be done with dual inversion recovery pulses so that selective signal nulling of the inflowing blood is achieved. The inversion delays required to establish the black-blood contrast can be favorably integrated into ECG-triggered diastolic cardiac measurements, but they are by far too time-consuming for dynamic measurements that cover the total cardiac cycle. In this work we investigate the use of conventional saturation pulses for black-blood imaging. We propose a very time-efficient pulse implementation that combines the saturation and the imaging RF pulse into a single pulse structure and enables black-blood contrast in dynamic measurements.

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