Keywords: RF Arrays & Systems, RF Arrays & Systems, B0 Gradient Free MRI, Low-field MRI
Motivation: In order to realize the elimination of expensive B0 gradient hardware, new low-field imaging techniques demand a hardware redesign.
Goal(s): Build a compact and modular RF transmit system at a low price point, in order to enable the expansion of RF gradient imaging systems.
Approach: A previous design allowing for efficient and wireless operation of RF transmit in-field is modified with active channel decoupling to ease array expansion.
Results: A three channel array of low-cost transmitters with distributed synthesis capabilities and closed-loop amplitude control for active decoupling is presented, with a build cost under US$150 per channel.
Impact: Enabling high RF transmit channel count is essential for RF encoded imaging techniques like Selective Excitation through Nutation and Fingerprinting (SENF). Novel transmit system architecture presented here enables a reduction in system cost and easier array scaling while increasing portability.
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.
Keywords