Four basis transmit k-space trajectories (a single variable density spiral-in, a two stack of variable density spiral-in, a three stack of variable density spiral-in and a SPINS trajectory) were optimized for pTx radiofrequency pulse design in order to match the excitation target pattern. The parameter to be optimized where the parameter of the analytical equations of the basis trajectories. The procedure was tested on local excitation and whole brain-like excitation target patterns. Optimized trajectories enabled considerably improved radiofrequency pulse performance, compared to radiofrequency pulses based on unsuited trajectories. The optimization code is available online as open source (https://github.com/ole1965/workflow_OTUP.git).
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