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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