Abstract #2703
Assessment of Left Ventricular Abnormal Twist in Repaired Tetralogy of Fallot Patients Using Phase-Contrast MRI
Meng-Chu Chang 1 , Ming-Ting Wu 2 , Marius Menza 3 , Mao-Yuan Su 4 , Hung-Chieh Huang 2 , and Hsu-Hsia Peng 5
1
Interdisciplinary Program of Nuclear
Science, National Tsing Hua University, Hsinchu, Taiwan,
2
Department
of Radiology, Kaohsiung Veterans General Hospital,
Kaohsiung, Taiwan,
3
Medical
Physics, Department of Radiology, University Hospital
Freiburg, Freiburg, Germany,
4
Department
of Medical Imaging, National Taiwan University Hospital,
Taipei, Taiwan,
5
Department
of Biomedical Engineering and Environmental Sciences,
National Tsing Hua University, Hsinchu, Taiwan
After the repaired surgery for tetralogy of Fallot
(rTOF) patients, residual pulmonary regurgitation
becomes the most problematic sequel, which leads to
heart failure and influences the long-term mortality.
Therefore, early detection of restrictive myocardial
function is important. In this study, our purpose is to
evaluate circumferential myocardial motion velocity (V∅)
for rTOF patients and to speculate the dyssynchrony by
using dark-blood phase-contrast MRI. Patients with rTOF
presented weaker rotation during systole and
dyssynchrony during diastole. These parameters can
provide satisfied information to characterize cardiac
twist function of rTOF patients before the cardiac
function is impacted.
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