Abstract #3201
Towards routine application of dynamic parallel transmission for whole-brain imaging at 9.4 Tesla
Jens Hoffmann 1,2 , G. Shajan 1 , Christian Mirkes 1,3 , Tingting Shao 1 , Anke Henning 1,4 , Rolf Pohmann 1 , and Klaus Scheffler 1,3
1
High-Field Magnetic Resonance Center, Max
Planck Institute for Biological Cybernetics, Tuebingen,
Germany,
2
Graduate
School of Neural & Behavioural Sciences, Tuebingen,
Germany,
3
Department
for Biomedical Magnetic Resonance, University of
Tuebingen, Germany,
4
Institute
for Biomedical Engineering, University and ETH Zurich,
Switzerland
The requirements for implementing a multi-purpose,
pTx-enabled RF setup for whole-brain imaging at 9.4
Tesla are high. They include transmit arrays with
sensitivities distributed in all dimensions, receive
hardware for high-SNR parallel signal reception,
numerical simulations for compliance with SAR limits as
well as rapid, volumetric calibration scans. In this
work, we report our progress in achieving these
objectives. A 16-channel dual-row Tx / 31-channel
Rx-array combination was interfaced to an 8-channel pTx
system. SAR was evaluated numerically, rapid calibration
scans were acquired using a 3D DREAM sequence and
superior excitation quality using Spokes pulses is
demonstrated in vivo.
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.
