In this work, it is assessed how electronically modulated time-varying receive sensitivities can improve parallel imaging reconstruction at 9.4T. The required sensitivity modulation is achieved by introducing variable capacitance diodes (varactors) in the receive loops that can be independently adjusted to modify B1- profiles. A prototype 4 channel receive array was built, and measured and simulated receive profiles were compared. Additionally, simulations were conducted regarding potential for g-factor improvement. It was found that potential improvements strongly depend on the B1- switching patterns during k-space acquisition, where strongest improvements are to be expected from fast B1- modulations.
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