The increased SNR at 7T and high efficiency of spatial encoding from fast readout trajectories means that substantially accelerated spectroscopic imaging acquisitions are practical. In this report, we implement targeted multi-slice Hadamard encoded cascaded and simultaneous acquisitions. With the cascaded rosette, minimal CSDE is incurred, generating 4slices in 8min12s. The J-refocused sequence achieves excellent CRLB in <2.3min for a single slice. With a B1 reduction strategy that allows multiple simultaneous Hadamard encoding, the J-refocused sequence is also demonstrated with 4slice acquisitions. As performed in brain tumor patients, the targeted Hadamard rosette is well tolerated and sensitive for detection of pathology.
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