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Abstract #1431

Regional MRI Left Ventricular Ejection Fraction Compared to Wall Motion Scoring and Late Enhancement Scar Imaging

Avan Suinesiaputra1, Brett R. Cowan1, Pau Medrano-Gracia1, Daniel C. Lee2, Alistair A. Young1

1Anatomy with Radiology, The University of Auckland, Auckland, New Zealand; 2Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, IL, United States

In this study, we calculated regional ejection fraction (EF) from a 4D left-ventricular mathematical model derived from cine MRI. We investigated the potential of using this to distinguish abnormal segments in ischaemic patients, which are currently clinically assessed by (regional) visual scoring. In general, regional EF is well correlated with visual wall motion scoring and late gadolinium enhancement. Normal regional EF varied between regions with the highest in (S6, S12, S16) and lowest in (S2, S3).