The longitudinal relaxation rate is a useful myelin proxy that can be estimated by combining multiple acquisitions with different nominal flip angles. Inter-scan motion can introduce large biases that can be efficiently corrected if reference data with a relatively ‘flat’ sensitivity profile, e.g. a body coil, is available. This is generally not the case at ultra-high field where highly inhomogeneous localised transmit-receive coils are used. Therefore, we propose a new method for estimating and removing the net coil sensitivity that does not require a body coil, needs only coil-wise magnitude images, yet reduces motion-induced bias in R1.
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