Keywords: Pulse Sequence Design, Data Acquisition
Motivation: Radial UTE can often be impacted by aliasing artifacts if undersampling is required to achieve a short scantime. More efficient trajectories may alleviate these limitations.
Goal(s): Our goal is to study how much aliasing reduction can be achieved in UTE MRI by applying a small amount of spiral twist to the readout trajectory.
Approach: In order to add some twist/spiral to the UTE trajectories, we simply added an orthogonal gradient while simultaneously ramping down the radial-out read gradient.
Results: Images using a longer, twisted readout trajectory results in less visible aliasing artifacts and increased SNR.
Impact: UTE MRI undersampling artifacts were found to be reduced using simple twisted k-space trajectories, hence allowing a reduction in scantime.
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