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Abstract #2414

Combined T 2 -Preparation and 2D "Pencil Beam" Inner Volume Selection, Applied to Accelerated Reduced Field of View Coronary MRA

Andrew J Coristine 1,2 and Matthias Stuber 1,2

1 Department of Radiology, University Hospital (CHUV) / University of Lausanne (UNIL), Lausanne, VD, Switzerland, 2 CardioVascular Magnetic Resonance (CVMR) research centre, Centre for Biomedical Imaging (CIBM), Lausanne, VD, Switzerland

Two dimensional (2D) spatially selective radiofrequency (RF) pulses may be used to constrain the location from which an MR signal is obtained. This may lead to more time-efficient data collection by reducing the field of view (FoV) or may improve image quality by suppressing artefacts from outside the area of interest. Meanwhile, T 2 -Preparation, or T 2 -Prep, is a magnetization preparation scheme used to improve blood/myocardium contrast. We propose incorporating a "pencil-beam" 2D RF pulse into a T 2 -Prep module, so as to produce a "2D T 2 -Prep" that combines T 2 -weighting with an intrinsic spatial selectivity. Numerical simulations, phantom validation, and in vivo results are presented.

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