Meeting Banner
Abstract #0354

Evaluation of Regurgitation Fraction in Repaired Tetralogy of Fallot Using 2D-PC and 4D Flow MRI

HIROZUMI MORI1, MICHINOBU NAGAO2, Masahiro Jinzaki1, and Hiroshi Hamano3
1Department of Radiology, Keio University School of Medicine, Tokyo, Japan, 2Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Womens Medical University, Tokyo, Japan, 3Philips Japan, Tokyo, Japan

Synopsis

Keywords: Flow, Cardiovascular, regurgitation fraction, 4D flow, tetralogy of fallot, 2D phase contrast

Motivation: Severe pulmonary regurgitation in repaired Tetralogy of Fallot (TOF) patients requires accurate assessment of regurgitation fraction (RF) for effective management.

Goal(s): To evaluate RF by measuring Forward Flow Volume (FFV) and Backward Flow Volume (BFV) with both 2D-PC and 4D Flow MRI, and to identify optimal measurement locations.

Approach: Thirty TOF patients underwent 2D-PC and 4D Flow MRI. FFV and BFV were measured at consistent and multiple cross-sections, analyzing the effects of artery shape and turbulence.

Results: 2D-PC and 4D Flow showed high correlation, but artery dilation and turbulence impacted 4D Flow values. Near-valve, minimally dilated regions provided more consistent RF measurements.

Impact: This study enhances the reliability of 4D Flow MRI for RF measurement in TOF patients by comparing it to 2D-PC. 4D Flow assessment helps explore optimal measurement sites, leading to more accurate evaluations and better management of pulmonary regurgitation.

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.

Keywords