Meeting Banner
Abstract #3223

Energy-loss in Fontan Circulation Develops Heterogeneous Pulmonary Perfusion: Hybrid Analysis of 2D Vortex Flow Map and 4D Flow MRI

Michinobu Nagao1, Umiko Ishizaki1, Yumi Shiina2, Kenji Fukushima1, Yuka Matsuo1, Tatsunori Takahashi3, Kei Inai2, In-Sam Park3, Yasuhiro Goto4, Yamato Shimomiya5, Yuzo Yamasaki6, Ichiro Sakamoto7, Kenichiro Yamamura8, Atsushi Takemura9, Masami Yoneyama9, and Shuji Sakai1

1Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan, 2Clinical Reserch for ACHD, Tokyo Women's Medical University, 3Pediatric Cardiology, Tokyo Women's Medical University, 4Radiological service, Tokyo Women's Medical University, 5Clinical Application Development Marketing Division, Ziosoft Inc, 6Clinical Radiology, Kyushu University, 7Cardiovascular Medicine, Kyushu University, 8Pediatrics, Kyushu University, 9Philips Electronics Japan

Patients with Fontan-operation, single-ventricle heart frequent have systematic collaterals that increase pulmonary blood flow. The competitive flow elevates pulmonary artery pressure, a process leading to erosion of flow energy. We developed a novel post-processing of 2D cine MRI named for “vortex flow map” to evaluate the energy-loss in Fontan-circuit. Vortex flow map shows energy-loss as small magnitude of vortex flow (MVF) and reveals the relation to heterogeneous pulmonary perfusion. In total cavopulmonary conversion, 4D flow can visualize energy-loss caused by a meandering extra-cardiac conduit and the conflict flow, leading to reduce unilateral lung perfusion.

This abstract and the presentation materials are available to members only; a login is required.

Join Here