Abstract #1560

Comparison of Blip-Up and Blip-Down EPI Distortion Correction Methods for Cardiac Diffusion Tensor Imaging

Tyler E Cork^1,2,3, Matthew J Middione^1,2, Michael Loecher^1,2, Congyu Liao¹, Kévin Moulin^4,5, Kawin Setsompop^1,6, and Daniel B Ennis^1,2,7

¹Department of Radiology, Stanford University, Stanford, CA, United States, ²Division of Radiology, Veterans Administration Health Care System, Palo Alto, CA, United States, ³Department of Bioengineering, Stanford University, Stanford, CA, United States, ⁴CREATIS Laboratory, University of Lyon, Lyon, France, ⁵Department of Radiology, University Hospital Saint-Etienne, Saint-Etienne, France, ⁶Department of Electrical Engineering, Stanford University, Stanford, CA, United States, ⁷Cardiovascular Institute, Stanford University, Stanford, CA, United States

Synopsis

To maintain minimal scan times, cardiac Diffusion Tensor Imaging (cDTI) uses an echo-planar imaging (EPI) readout. Off-resonance, that causes geometric distortion in EPI, remains an obstacle that degrades image quality and can affect the underlying quantitative information. In cDTI, the lung/liver/heart interface amplifies the effect of geometric distortion. Distortion correction algorithms, such as TOPUP and DR-BUDDI, have proved to adequately correct distortion in neuroimaging, but limited work has been done for the heart. A first look at comparing these two correction strategies head-to-head was evaluated and resulting in TOPUP as a slightly better tool addressing distortion correction in the heart.

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.