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Abstract #2590

Evaluate Right Ventricular Energy Propagation for Patients With Repaired Tetralogy of Fallot by Using Phase-Contrast MRI

Meng-Chu Chang1, Ming-Ting Wu2, Marius Menza3, Mao-Yuan Su4, Hung-Chieh Huang2, and Hsu-Hsia Peng1

1Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan, 2Department of Radiology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan, 3Medical Physics, Department of Radiology, University Hospital Freiburg, Freiburg, Germany, 4Department of Medical Imaging, National Taiwan University Hospital, Taipei, Taiwan

The association between right ventricle (RV) volume or pressure overloading pathology and intraventricular flow of repaired tetralogy of Fallot (rTOF) patient is still unclear. Therefore, we evaluated RV input- and output kinetic energy and intraventricular flow patterns for rTOF patients to speculate the energy propagation by using phase-contrast MRI. During systole, rTOF patients presented higher RV output KE. Moreover, in rTOF patients, the blood flow filled into RV with a high velocity, accompanying several local vortices. In conclusion, higher output KE and the visualization of intraventricular vectors helped to comprehend the energy propagation in RV.

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