Abstract #4776

Strain elastography using a feature- tracking of cine cardiac magnetic resonance imaging: assessment of liver fibrosis in Fontan patients and tetralogy of Fallot

Ryoko Ohashi¹, Michinobu Nagao¹, Umiko Ishizaki¹, Yuka Matsuo¹, Kenji Fukushima¹, Yasuhiro Goto², Yumi Shiina³, Kei Inai³, Seiko Simizu⁴, Yuichiro Sano⁴, Masami Yoneyama⁵, and Shuji Sakai^1,2

¹Department of Diagnostic imaging & Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan, ²Department of Radiological service, Tokyo Women's Medical University, Tokyo, Japan, ³Department of Pediatric Cardiology, Tokyo Women's Medical University, Tokyo, Japan, ⁴Toshiba Medical Systems Corporation, Tochigi, Japan, ⁵Philips Electronics Japan, Tokyo, Japan

We propose a new strain elastography to quantify hepatic fibrosis using feature tracking method of cardiac cine MRI, and investigate the strain elasticity in long-term post-operative patients after Fontan and intracardiac repair (ICR) for tetralogy of Fallot (TOF). The strain elasticity was lower for Fontan patients than that for TOF patients and controls, suggesting that liver fibrosis progresses after Fontan operation. The strain elastography using feature tracking method of cardiac cine MRI is a noninvasive new method for prediction of liver fibrosis.

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