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Abstract #3839

Phase-Contrast Cine MR Imaging of Pulmonary Artery to Assess Outcome of Balloon Pulmonary Angioplasty in Patients with Chronic Thromboembolic Pulmonary Hypertension

Yoshiaki Morita 1 , Naoaki Yamada 1 , Emi Tateishi 1 , Kumi Ozaki 1 , Yoshihiro Sanda 1 , Suzu Kanzaki 1 , Akihiro Tsuji 2 , Shigefumi Fukui 2 , Takeshi Ogo 2 , Tetsuya Fukuda 1 , Masahiro Higashi 1 , Norifumi Nakanishi 2 , and Hiroaki Naito 1

1 Department of Radiology, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan, 2 Division of Cardiology, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan

Recently, balloon pulmonary angioplasty (BPA) has been performed as a treatment option for chronic thromboembolic pulmonary hypertension (CTEPH) with improvement of clinical status and hemodynamics. In this study, we demonstrated that phase-contrast MR imaging (PC-MRI) enables to quantify the pulmonary hemodynamic improvement after BPA. Especially, the change between before and after BPA of AT/ET (acceleration time to ejection time ratio) measured by PC-MRI has a good correlation with that of mean pulmonary artery pressure, suggesting that AT/ET might offer a modality for the noninvasive and repeatable monitoring after BPA.

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