Abstract #2393
Self-gated cardiac Cine MRI of the rat on a clinical 3T MRI system
Martin Krmer 1 , Karl-Heinz Herrmann 1 , Judith Biermann 1 , Sebastian Freiburger 2 , Michael Schwarzer 2 , and Jrgen R Reichenbach 1
1
Medical Physics Group, Institute of
Diagnostic and Interventional Radiology I, Jena
University Hospital - Friedrich Schiller University
Jena, Jena, TH, Germany,
2
Department of
Cardiothoracic Surgery, Jena University Hospital -
Friedrich Schiller University Jena, TH, Germany
To perform cardiac cine imaging of a rat with a clinical
whole-body 3T MRI system, a single slice was repeatedly
acquired with radial readouts rotated using the
golden-angle. The acquisition was interspersed with
repetitive measurements of 1D navigator projections with
a high frequency of 54 Hz. From the navigator data a
correlation function was derived showing both
respiratory and cardiac motion. Thresholding the
correlation function to exclude respiratory motion
retrospective cardiac cine-reconstruction was performed
by using the cardiac signal from the navigator data.
Spatial in-plane resolution of 0.21 x 0.21 mm was
achieved in less than 10 minutes
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