Abstract #3313

Analysis of patch, dipole, microstrip, and loop Tx arrays as a bore-tube integrated 7T body coil

Ehsan Kazemivalipour^1,2, John M. Drago^1,2,3, and Lawrence L. Wald^1,2,4

¹Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA, United States, ²Harvard Medical School, Boston, MA, United States, ³Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, United States, ⁴Harvard-MIT Division of Health Sciences Technology, Cambridge, MA, United States

Synopsis

Keywords: RF Arrays & Systems, RF Arrays & Systems

Motivation: The lack of a bore-tube integrated body Tx coil, such as those in common use at 1.5T and 3T, poses a significant barrier to clinical acceptance of 7T.

Goal(s): We evaluate transmit and SAR efficiency, uniformity, and load stability of 4 different bore-tube integrated 7T body transmitters for use with arbitrary trajectory pTx pulses.

Approach: We simulated 8-channel patch, dipole, microstrip, loop pTx arrays, and a birdcage coil using a full co-simulation/body-model approach and evaluated their performance for optimized trajectory pTx excitation.

Results: Patch array demonstrated superior transmit uniformity and power-efficiency, making it a promising design for 7T body MRI.

Impact: Our findings suggest that the patch pTx array can improve 7T body MRI by enhancing transmit efficiency and stability while maintaining SAR safety. Development of such an array could enable facilitate clinical body imaging at 7T.

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.