Abstract #2563
Six-degree of Freedom Retrospective Motion Correction using Spherical Navigator Echoes (SNAV)
Patricia Johnson 1,2 , Junmin Liu 1 , Trevor Wade 1 , and Maria Drangova 1,2
1
Imaging Research Laboratories, Robarts
Research Institute, London, Ontario, Canada,
2
Dept.
of Medical Biophysics, Schulich School of Medicine &
Dentistry, Western University, London, Ontario, Canada
Spherical navigator echo (SNAV) techniques are promising
for measuring rigid body motion in all 6 degrees of
freedom. In this abstract we demonstrate for the first
time - the accuracy of retrospective
preRot-SNAV-correction of motion by interleaving the
SNAVs within a 3D imaging pulse sequence (efgre-SNAV).
We have performed a preliminary evaluation of this
sequence and determined that the interleaved SNAVs
perform comparably to stand alone SNAVs in measurements
of rotation and translations; they agree within 1.0 and
0.43mm. We have also demonstrated successful
retrospective correction of a phantom image.
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.
