Analysis of degenerated aortic valve bioprosthesis by segmentation of preoperative CT images

Vito-Giovanni. Ruggieri (1, 2) , Wang Qian (1) , Simon Esneault (3) , Raphael Madeleine (1) , Limin Luo (4, 5) , Alain Leguerrier (2) , Jean-Philippe Verhoye (1) , Pascal Haigron (1)

1 LTSI - Laboratoire Traitement du Signal et de l'Image
2 Service de chirurgie thoracique cardiaque et vasculaire [Rennes] = Thoracic and Cardiovascular Surgery [Rennes]
3 Therenva SAS
4 CRIBS - Centre de Recherche en Information Biomédicale sino-français
5 LIST - Laboratory of Image Science and Technology [Nanjing]

In the next future. transcatheter aortic valve implantation could represent a minimally invasive option in case of bioprosthesis failure for patients at high surgical risk. CT based preoperative planning of this procedure could be useful to optimize valve-in-valve implantation. In this context, bioprosthesis 3D analysis seems to be necessary. particularly for leaflets. The goal of this study was to propose different methods to segment and characterize a degenerated bioprosthesis using standard preoperative CT scan images in order to map structural injury of bioprosthesis and. ultimately, to plan the best positioning for valve-in-valve implantation. We report our preliminary results on segmentation of a degenerated bioprosthesis in aortic position. Three different methods have been tested and all allowed obtaining segmentation of the different bioprosthesis components. Results were compared by means of quantitative criteria. Explanted bioprosthesis CT images were used as reference. Semi-automatic segmentation seems to provide an interesting approach for the morphological characterization of degenerated hioprosthesis.

Mots clés: CORONARY-ARTERY-DISEASE; ROW COMPUTED-TOMOGRAPHY; PERCUTANEOUS TRANSCATHETER IMPLANTATION; DIAGNOSTIC PERFORMANCE; HEART-VALVE; MYOCARDIAL-INFARCTION; MAGNETIC-RESONANCE; ANGIOGRAPHY; STENOSIS; PROSTHESIS

Domaines: Ingénierie biomédicale; Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]; Chirurgie; Cardiologie et système cardiovasculaire

Vito-Giovanni. Ruggieri, Wang Qian, Simon Esneault, Raphael Madeleine, Limin Luo, et al.. Analysis of degenerated aortic valve bioprosthesis by segmentation of preoperative CT images. Innovation and Research in BioMedical engineering, 2012, 33 (5-6), pp.287-297. ⟨10.1016/j.irbm.2012.09.001⟩. ⟨inserm-00785803⟩