Abstract #4651

Accelerated Four-Dimensional Rosette J-resolved Spectroscopic Imaging (4D ROSE-JRESI) with semi-LASER Localization: A pilot study

Ajin Joy¹, Uzay Emir^2,3, Paul M. Macey⁴, and M. Albert Thomas¹

¹Radiological Sciences, University of California, Los Angeles, Los Angeles, CA, United States, ²School of Health Sciences, Purdue University, West Lafayette, IN, United States, ³Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, United States, ⁴School of Nursing and Brain Research Institute, University of California, Los Angeles, Los Angeles, CA, United States

Synopsis

Keywords: Data Acquisition, BrainUndersampling spatial and spectral dimensions is essential to achieve clinically feasible scan times in multi-dimensional spectroscopic imaging. Sampling pattern of rosette trajectory has higher incoherence than that of the other non-Cartesian trajectories like spiral and radial, and can achieve higher compressed-sensing reconstruction performance. While rosette spectroscopic imaging has been attempted for 2D (2 spatial+1 spectral) and 3D (3 spatial+1 spectral) spectroscopic imaging, it has thus far not been shown for J-resolved spectroscopic imaging. In this pilot study, we implemented a rosette echo-planar J-resolved spectroscopic imaging (ROSE-JRESI) sequence and studied the feasibility of high acceleration factors for clinically feasible runtimes.

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.