Abstract #2669

Prospective Motion Correction with Radial MRI for Improved Neuroimaging during Severe Motion

Sophie Schauman¹, Adam van Niekirk¹, Henric Rydén^1,2, Ola Norbeck^1,2, Tim Sprenger³, Enrico Avventi^1,2, and Stefan Skare^1,2

¹Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden, ²Department of Neuroradiology, Karolinska University Hospital, Stockholm, Sweden, ³MR Applied Science Laboratory Europe, GE Healthcare, Munich, Germany

Synopsis

Keywords: Motion Correction, Data Acquisition

Motivation: Prospective motion correction can correct motion-induced sampling errors in real time but is still sensitive to large motion due to position based non-linear phase differences.

Goal(s): We aim to increase motion robustness of 3D sequences.

Approach: By combining prospective motion correction with radial sampling, non-linear phase errors can be mitigated due to repeated sampling of the k-space center.

Results: We show that prospective motion correction alone is enough for subtle motion but during severe motion (rotations well above ±5°) radial sampling can outperform Cartesian sampling.

Impact: Radial sampling in combination with prospective motion correction allows for imaging during severe motion corruption. This is crucial in imaging e.g. paediatric populations.

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.