Abstract #0409

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

Simon Reiss¹, Axel Joachim Krafft^1,2,3, 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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