Ultrasound based mitral valve annulus tracking for off-pump beating heart mitral valve repair

Feng P. Li; Martin Rajchl; John Moore; Terry M. Peters

doi:10.1117/12.2043562

12 March 2014 Ultrasound based mitral valve annulus tracking for off-pump beating heart mitral valve repair

Feng P. Li, Martin Rajchl, John Moore, Terry M. Peters

Author Affiliations +

Proceedings Volume 9036, Medical Imaging 2014: Image-Guided Procedures, Robotic Interventions, and Modeling; 90361M (2014) https://doi.org/10.1117/12.2043562
Event: SPIE Medical Imaging, 2014, San Diego, California, United States

Abstract

Mitral regurgitation (MR) occurs when the mitral valve cannot close properly during systole. The NeoChord© tool aims to repair MR by implanting artificial chordae tendineae on flail leaflets inside the beating heart, without a cardiopulmonary bypass. Image guidance is crucial for such a procedure due to the lack of direct vision of the targets or instruments. While this procedure is currently guided solely by transesophageal echocardiography (TEE), our previous work has demonstrated that guidance safety and efficiency can be significantly improved by employing augmented virtuality to provide virtual presentation of mitral valve annulus (MVA) and tools integrated with real time ultrasound image data. However, real-time mitral annulus tracking remains a challenge. In this paper, we describe an image-based approach to rapidly track MVA points on 2D/biplane TEE images. This approach is composed of two components: an image-based phasing component identifying images at optimal cardiac phases for tracking, and a registration component updating the coordinates of MVA points. Preliminary validation has been performed on porcine data with an average difference between manually and automatically identified MVA points of 2.5mm. Using a parallelized implementation, this approach is able to track the mitral valve at up to 10 images per second.

Citation Download Citation

Feng P. Li, Martin Rajchl, John Moore, and Terry M. Peters "Ultrasound based mitral valve annulus tracking for off-pump beating heart mitral valve repair", Proc. SPIE 9036, Medical Imaging 2014: Image-Guided Procedures, Robotic Interventions, and Modeling, 90361M (12 March 2014); https://doi.org/10.1117/12.2043562

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE