Arun Joseph1,2,3, Tobias Kober4,5,6, and Tom Hilbert4,5,6
1Advanced Clinical Imaging Technology, Siemens Healthcare AG, Bern, Switzerland, 2Translational Imaging Center, Sitem-Insel, Bern, Switzerland, 3Departments of Radiology and Biomedical Research, University of Bern, Bern, Switzerland, 4Advanced Clinical Imaging Technology, Siemens Healthcare AG, Lausanne, Switzerland, 5Department of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland, 6LTS5, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
1Advanced Clinical Imaging Technology, Siemens Healthcare AG, Bern, Switzerland, 2Translational Imaging Center, Sitem-Insel, Bern, Switzerland, 3Departments of Radiology and Biomedical Research, University of Bern, Bern, Switzerland, 4Advanced Clinical Imaging Technology, Siemens Healthcare AG, Lausanne, Switzerland, 5Department of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland, 6LTS5, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
We implemented a compressed sensing multi-echo GRE
acquisition at 7T to acquire 0.8 mm isotropic R2* maps of the whole brain in
<7 mins. A reduction in susceptibility artifacts is observed in comparison
to acquisitions with 1.6 mm isotropic resolution.
Figure 2:
R2* maps from different views obtained from GRAPPAx2 and compressed
sensing reconstructions with 1.6 mm and 0.8 mm isotropic resolutions.
Figure 5:
Comparison of sagittal R2*
maps obtained from GRAPPAx2 and CS acquisition with 1.6 mm and 0.8 mm
resolution.
