Meeting Banner
Abstract #0005

Postoperative changes in volume flow rate in the thoracic aorta and the aortic arch branches in patients with aortic valve stenosis: a prospective serial 4D flow MRI study

Hiroki Kamada1, Hideki Ota1, Masanori Nakamura2, Yohsuke Imai3, Wenyu Sun1, Yoshiaki Komori4, Ko Sakatsume5, Ichiro Yoshioka5, Yoshikatsu Saiki6, and Kei Takase1

1Department of Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan, 2Department of Electrical and Mechanical Engineering, Nagoya Institute of technology, Nagoya, Japan, 3School of Engineering, Tohoku University, Sendai, Japan, 4Siemens Japan K.K., Tokyo, Japan, 5Division of Cardiovascular Surgery, Tohoku University Hospital, Sendai, Japan, 6Division of Cardiovascular Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan

Postoperative hemodynamic changes in the aorta in patients with aortic valve stenosis (AS) remain unclear. Four-dimensional (4D) flow MRI was perfumed in 11 AS patients before and after aortic valve replacement (AVR). We evaluated volume flow rate and the main flow direction, setting 15 planes of the aorta and 3 planes of the arch branches. Volume flow rate significantly increased in the ascending aorta and the arch branches. The main flow direction came to match with the axial direction of the aorta. These results suggest that AVR results in more efficient blood transport to the upper body including the brain.

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

Join Here