Abstract #1858

Towards Markerless Optical Tracking for Prospective Motion Correction in Brain Imaging

Julian Maclaren¹, Andre Kyme^2,3, Murat Aksoy¹, and Roland Bammer¹

¹Department of Radiology, Stanford University, Stanford, CA, United States, ²Department of Biomedical Engineering, University of California Davis, Davis, CA, United States, ³Brain and Mind Centre, University of Sydney, Sydney, Australia

Prospective motion correction based on optical tracking shows promise for improving image quality in MR brain imaging. To simplify this technique and expedite clinical deployment, it is desirable to avoid attaching markers to the patient’s head. Here we demonstrate proof-of-principle markerless tracking using an MR-compatible stereo camera and head coil configuration. We tested the method outside the MR environment using a 6-axis robot, capable of very accurate and repeatable (~20 µm) motion, to control a head phantom. Close agreement between our pose estimates and the applied motion suggests that accurate markerless tracking of the head is feasible in MRI.

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.