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Abstract #3356

Relative Area Change (RAC) Better Reflects Right Ventricular Ejection Fraction (RVEF) than Longitudinal or Transverse Functional Measurements in Pulmonary Hypertension Patients

Andrew James Swift1,2, Smitha Rajaram1, David Capener1, Judith Hurdman3, Robin Condliffe3, Charlie Elliot3, David G. Kiely3, Jim M. Wild1

1Academic Unit of Radiology, Sheffield, South Yorkshire, United Kingdom; 2NIHR Cardiovascular Biomedical Research Unit, Sheffield, United Kingdom; 3Pulmonary Vascular Disease Unit, Royal Hallamshire Hospital, Sheffield, United Kingdom

This study in patients with pulmonary hypertension (PH) assesses the relation of RAC, transverse and longitudinal RV measurements with RVEF as calculated from multislice cine MRI. RVEF is better reflected by RAC than longitudinal wall motion or transverse wall motion in patients with PH. We postulate this is because RAC assesses RV function in both the transverse and longitudinal directions. Transverse RV function showed a similar correlation to longitudinal function for predicting RVEF in our mixed cohort of PH patients