Tracking Large Anterior Mitral Leaflet Displacements by Incorporating Optical Flow in an Active Contours Framework

• Type: Article in International Conference Proceedings Book
• Date: 2017

Authors

Sultan, MS (Author) Other; Martins, N (Author) Other; Costa, E (Author) Other; Veiga, D (Author) Other; Ferreira, MJ (Author) Other; Mattos, S (Author) Other; Coimbra, M (Author) FCUP

Conference proceedings International

Title: Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS

Pages: 3244-3247

39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2017

11 July 2017 through 15 July 2017

Indexing

ISI Web of Knowledge - 4 Citations

Scopus - 6 Citations

Other information

Authenticus ID: P-00N-61N

DOI: 10.1109/embc.2017.8037548

Abstract (EN): Echocardiography is an important tool to detect early evidence of mitral valve degradation associated with rheumatic heart disease. The segmentation and tracking of the Anterior Mitral Leaflet helps to quantify the morphologic valve anomalies, such as the leaflet thickening, shape and the mobility changes. The tracking of this leaflet throughout the cardiac cycle is still an open challenge in the research community. The widely used active contours segmentation framework fails when faced with large leaflet displacement. In this work, we propose the integration of optical flow in an open-ended active contour framework to address this difficulty. This additional information promotes solutions with contours next to high leaflet displacements, resulting in superior performance. The algorithm was tested on 9 fully annotated real clinical videos, acquired from the parasternal long axis view. The algorithm is compared with our previous work. Results show a clear improvement in situations where the leaflet exhibits large displacement or irregular shapes, with an average error of 4.5 pixels and a standard deviation of 2 pixels.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4