Abstract #4859

Characterization of left atrial remodelling and atrial fibrillation subtype using fractal analysis of late gadolinium enhanced MRI

Rebecca E Thornhill^1,2, Jessie Kang^1,2, Pablo B Nery^3,4, Calum Redpath^3,4, David Birnie^3,4, Sophie Chenier³, and Elena Peña^1,2

¹Medical Imaging, The Ottawa Hospital, Ottawa, ON, Canada, ²Radiology, Radiation Oncology, and Medical Physics, University of Ottawa, Ottawa, ON, Canada, ³University of Ottawa Heart Institute, Ottawa, ON, Canada, ⁴Medicine, University of Ottawa, Ottawa, ON, Canada

Synopsis

Keywords: Arrhythmia, Heart

Atrial Fibrillation (AF) is a heart rhythm disorder of the left atrium (LA) that is associated with an increased risk of stroke and death. AF has been known to induce morphological changes of the LA that may be detectable with fractal analysis. The purpose of this study was to assess whether there are differences in fractal dimension of the LA based on AF severity or subtype. The paroxysmal AF groups demonstrated increased fractal dimension compared to persistent or permanent groups. LA dilatation associated with persistent or permanent AF may explain this result, but this requires validation in a larger cohort.

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.