Keywords: Software Tools, Modelling
Motivation: A common source of problems in MRI sequence development and optimization is the transfer of the sequence between simulation and measurement. By using a single sequence definition understood by both, this could be avoided.
Goal(s): Enable the use of a single definition of an MRI sequence for simulation, optimization of sequence parameters, and measurement.
Approach: PyPulseq is integrated with a fast, physics-based simulation, which allows a single sequence definition to be used for both simulation and measurement. Automatic differentiation allows efficient optimization of sequence parameters based on the simulated reconstruction.
Results: Timing and variable flip angles of two PyPulseq examples were successfully optimized.
Impact: Pulseq is a widely used and vendor agnostic library for writing MRI sequences. With pulseq-zero, existing and new sequence scripts can be simulated and optimized directly, with only minor modifications. The resulting sequences can be measured on real scanners immediately.
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