Paper Info
Title
Automatic measurement of aortic annulus diameter in 3-dimensional transoesophageal echocardiography.
Abstract
Transcatheter aortic valve implantation involves percutaneously implanting a biomechanical aortic valve to treat severe aortic stenosis. In order to select a proper device, precise sizing of the aortic valve annulus must be completed.In this paper, we describe a fully automatic segmentation method to measure the aortic annulus diameter in patients with aortic calcification, operating on 3-dimensional transesophageal echocardiographic images. The method is based on state estimation of a subdivision surface representation of the left ventricular outflow tract and aortic root. The state estimation is solved by an extended Kalman filter driven by edge detections normal to the subdivision surface.The method was validated on echocardiographic recordings of 16 patients. Comparison against two manual measurements showed agreements (mean ±SD) of -0.3 ± 1.6 and -0.2 ± 2.3 mm for perimeter-derived diameters, compared to an interobserver agreement of -0.1 ± 2.1 mm.With this study, we demonstrated the feasibility of an efficient and fully automatic measurement of the aortic annulus in patients with aortic disease. The algorithm robustly measured the aortic annulus diameter, providing measurements indistinguishable from those done by cardiologists.
Year
DOI
Venue
2014
10.1186/1471-2342-14-31
BMC Medical Imaging
Keywords
Field
DocType
Segmentation, Subdivision surface, 3-Dimensional Echocardiography, Aortic valve, Transcatheter aortic valve implantation
Aortic valve stenosis,Internal medicine,Cardiac skeleton,Cardiology,Stenosis,Aortic valve,Aortic Valve Annulus,Transoesophageal echocardiography,Radiology,Medicine
Journal
Volume
Issue
ISSN
14
1
1471-2342
Citations 
PageRank 
References 
2
0.38
1
Authors
5
Name
Order
Citations
PageRank
Jørn Bersvendsen151.09
Jan O Beitnes220.38
Stig Urheim3211.47
Svend Aakhus420.38
Eigil Samset513316.57