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Abstract #2496

Investigation of flow instabilities in branch pulmonary arteries after repaired Tetralogy of Fallot

Pei-Hsin Wu 1 , Hsiao-Wen Chung 1 , Ming-Ting Wu 2 , and Cheng-Wen Ko 3

1 Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan, 2 Department of Radiology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan, 3 Department of Computer Science and Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan

Previous studies demonstrate that branch pulmonary arteries show flow pattern asymmetry in patients after repair of Tetralogy of Fallot. On the other hand, the Reynolds number (Re) has been viewed as an indicator of flow instability and directly relates with volumetric flow and diameter. In this study, we investigate the flow behavior by using Reynolds number to examine whether there is difference between branch pulmonary arteries. The preliminary analyses show Re-related indices of RPA are significantly higher than that of LPA, which may imply the RPA is prone to flow instability compared to LPA.

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