FLASH-B1 mapping with a Fourier-encoding scheme works only for a limited range of flip-angles due to pronounced saturation effects that occur for short TR. The transmit voltage can be adjusted to satisfy this requirement in problematic Fourier combinations that have high dynamic range. However, this results in an unnecessary reduction of the dynamic range in combinations that are already within the accepted range. This study addresses this problem by optimizing the Fourier encoding matrix such that the flip-angle is reduced only in regions of high flip-angle in the problematic combinations.
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