Meeting Banner
Abstract #3456

Comparison of Dipole and Sleeve antenna arrays for Optimized Human Head Imaging at 10.5 Tesla

Yong Don Park1, Lance DelaBarre2, Matt Waks2, Jun Moo Kwak3, Yu Bin Lee3, Kamil Ugurbil2, Gregor Adriany2, and Myung Kyun Woo2,3
1Electronics Engineering, Hankuk University of Foreign Studies, Yongin, Korea, Republic of, 2Center for Magnetic Resonance Research, Minneapolis, MN, United States, 3Biomedical Engineering, Hankuk University of Foreign Studies, Yongin, Korea, Republic of

Synopsis

Keywords: Non-Array RF Coils, Antennas & Waveguides, RF Arrays & Systems

Motivation: To optimize B1+ and SAR efficiency for human head imaging at 10.5 T with 8 and 16-ch. dipole and sleeve antenna arrays.

Goal(s): Evaluation of achievable transmit performance among multiple dipole and sleeve antenna arrays.

Approach: Simulated and experimental analysis of B1+ and SAR efficiency comparing dipole and sleeve antennas with the same number of elements.

Results: The sleeve antenna arrays exhibited slightly improved SAR efficiency compared to the dipole antenna arrays. Simulation and experimental data including the coaxial feed-cables indicated that the sleeve antenna arrays exhibited a 23.8%(8-channel) and 11.3%(16-channel) higher SAR efficiency than the dipole antenna array with coaxial cables.

Impact: Our simulations and experiments comparing sleeve and dipole antenna arrays indicate that the antenna validation is notable affected by the presence of coaxial feed cables and that those need to be included for accurate results.

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.

Keywords