Retrospectively gated CINE 23 Na imaging of the heart at 7.0 T using density-adapted 3D projection reconstruction
Ana Resetar 1 , Stefan H. Hoffmann 1 , Andreas Graessel 2 , Helmar Waiczies 3 , Thoralf Niendorf 2,4 , and Armin M. Nagel 1
Medical Physics in Radiology, German Cancer
Research Center (DKFZ), Heidelberg, Germany,
Ultrahigh Field Facility, Max-Delbrueck-Center for
Molecular Medicine, Berlin, Germany,
GmbH, Berlin, Germany,
and Clinical Research Center (ECRC), Charit Campus Buch,
A retrospectively gated reconstruction routine for
of the human heart using a density-adapted 3D projection
reconstruction sequence with standard and golden angle
sampling scheme is presented. Different heart phases
with temporal resolutions of 0.2s (5 phases) and 0.1s
(10 phases) were reconstructed by filling the k-spaces
retrospectively according to an acoustic trigger signal.
Golden angle sampling yields a more homogeneous
distribution of projections which results in reduced
image artefacts and higher SNR.
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