Method to measure the 3D angular orientation of the aortic valve plane from a single image of a valvuloplasty balloon: findings of a large animal proof of concept experiment Journal Article

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Authors: Fetterly, K. A.; Mathew, V
Article Title: Method to measure the 3D angular orientation of the aortic valve plane from a single image of a valvuloplasty balloon: findings of a large animal proof of concept experiment
Abstract: During transcatheter aortic valve replacement procedures, alignment of the interventional x-ray beam with the aortic valve plane is required to guide valve placement. The purpose of this work was to develop methods to measure x-ray beam angles which are aligned with the aortic valve plane from a single x-ray image of a valvuloplasty balloon inflated across the left ventricular outflow tract (LVOT). A custom valvuloplasty balloon and image analytics were developed. In-vivo pig experiments demonstrated that the angular orientation of the LVOT can be measured with precision less than 3 degrees , including the influence of cardiac motion during rapid pacing. Using these methods, the angular orientation of the LVOT of a large mammal can be measured precisely and the continuous range of x-ray projection angles which are aligned with the aortic valve plane can be calculated.
Journal Title: Journal of medical engineering technology
Volume: 39
Issue: 2
ISSN: 1464-522X; 0309-1902
Publisher: Unknown  
Journal Place: England
Date Published: 2015
Start Page: 99
End Page: 104
Language: eng
DOI/URL:

10.3109/03091902.2014.981308
Notes: LR: 20161125; JID: 7702125; OTO: NOTNLM; ppublish