Improved spoiling efficiency in dynamic RF-spoiled imaging by ghost phase modulation and temporal filtering

RF-spoiled steady-state sequences (SPGR/T1-FFE/FLASH) offer rapid data acquisition and T1-weighting. The unbalanced gradient lobes (spoiler gradients) in these sequences are generally chosen empirically to be sufficiently large to achieve good spoiling and suppress ghosting artifacts, however the required spoiler gradient size for good ghost suppression is subjective and application-dependent. We present a simple acquisition and data processing strategy for improved ghost suppression in dynamic (or averaged) SPGR imaging, based on dynamically modulating the phase of the ghosts at the Nyquist frequency and removing that frequency component in pre-processing.

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.

Click here for more information on becoming a member.