Abstract #2167

Myocardial and Intraventricular Kinetic Energy in Patients with Fontan Circulation

Xue-Zhe Lu¹, Ming-Ting Wu², Ken-Pen Weng^3,4, 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, ³Department of Pediatrics, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan, ⁴Department of Pediatrics, National Yang-Ming University, Taipei, Taiwan

We aimed to investigate the interaction between systolic myocardial and intraventricular kinetic energy (KE_myo, KE_ven) in Fontan patients. The tissue phase mapping and 4D flow datasets were acquired for calculation of KE_myo and KE_ven. The Fontan group showed decreased peak and mean systolic KE_ven, and decreased peak and mean systolic KE_myo. The KE delay, describing the subtraction of time-to-peak KEmyo from time-to-peak KE_ven, in Fontan group significantly correlated with peak and mean systolic KE_ven. In conclusion, the correlation between KE delay and KE_ven illustrated the adverse impact of abnormal energy transferring mechanism on the single functional ventricle in Fontan patients.

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