Abstract #0646
Multi-Band-Multi-Spoke pTX RF Pulse Design in the Heart at 7 Tesla: towards Faster, Uniform Contrast Cardiac CINE Imaging
Sebastian Schmitter 1 , Xiaoping Wu 1 , Steen Moeller 1 , Dingxin Wang 1,2 , Andreas Greiser 3 , Edward J. Auerbach 1 , Lance DelaBarre 1 , Pierre-Francois van de Moortele 1 , and Kamil Ugurbil 1
1
Center for Magnetic Resonance Research,
University of Minnesota, Minneapolis, MN, United States,
2
Siemens
Medical Solutions USA, Inc., Minneapolis, MN, United
States,
3
Siemens
Healthcare Sector, Erlangen, Bavaria, Germany
Cardiac MRI may strongly benefit from ultra-high field
(UHF) providing higher SNR and intrinsic contrast.
However, shorter RF wavelength at UHF results in
heterogeneous contrast within the heart. This problem
has been successfully addressed with parallel
transmission (pTX) using 3D tailored RF excitation
('spokes'). Additionally, respiratory motion often
requires breath-hold examinations, which strongly limits
spatial coverage. Here we address simultaneously spatial
coverage and homogeneity by designing pTX spoke pulses
to simultaneously excite/acquire multiple slices
('Multi-Band') using a 16-channel pTX system. We
demonstrate successful cardiac CINE multiband
acquisitions for 2 slices at 7T and compare 1- and
2-spoke pulse performances.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Click here for more information on becoming a member.
