Abstract #3703

Rapid pre-saturated TFL transmit field mapping with an optimized 3D centric single-shot readout

Dario Bosch¹, Jonas Bause¹, Philipp Ehses², Moritz Zaiss^1,3, and Klaus Scheffler^1,4

¹High Field Magnetic Resonance Center, Max Planck Institute for Biological Cybernetics, Tuebingen, Germany, ²German Center for Neurodegenerative Diseases, Bonn, Germany, ³Department of Neuroradiology, University Hospital Erlangen, Erlangen, Germany, ⁴Institute for Biomedical Magnetic Resonance, University Hospital Tuebingen, Tuebingen, Germany

Robust and fast measurements of the transmit field strength is of great importance particularly in parallel transmit applications at ultra-high field. In this work, a pre-saturation TurboFLASH B₁⁺ mapping sequence was optimized for 3-dimensional single-shot acquisition with spiral-centric reordering. Improved SNR and reduced artifacts were achieved by using a variable flip-angle readout. The ability of the proposed sampling scheme to perform fast whole-brain B₁⁺ mapping with low SAR was demonstrated in phantom and in-vivo experiments at 9.4 T. The obtained B₁⁺ maps were comparable to those obtained with the conventional 2D-SatTFL approach but required significantly less scan time.

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.