Meeting Banner
Abstract #3453

MRI B1 Optimization using Coupled Coil Modal Analysis

Vikram Venkidu1, Madavan Raja Viswanath1, Maryamsadat Shokrekhodaei1, Arne Reykowski1, and Scott B. King1
1Promaxo Inc., Oakland, CA, United States

Synopsis

Keywords: RF Pulse Design & Fields, Bioeffects & Magnetic Fields

Motivation: In low field MRI, a strong, uniform B1 field helps improve deep tissue imaging. This is particularly challenging for one-sided MRI systems.

Goal(s): Strengthen the B1 field in deeper regions of interest to decrease sequence time and improve SNR.

Approach: A floating TX coil was developed, which when coupled to the system TX coil, enables a B1 enhanced mode within the desired bandwidth. Using analytical methods and iterative testing, this interaction is optimized.

Results: Using analytical methods we determined the tuning parameters for each coil and achieved the desired B1 enhanced mode and optimized B1 field performance in both strength and uniformity.

Impact: This adaptable analytical approach, employing a secondary coil to enhance the TX coil’s B1 field uniformity and localization, supports improved MRI imaging quality and enables our one-sided MRI system to image deeper into the body.

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