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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