Three-dimensional segmentation and quantification of the anatomic regurgitant orifice in mitral regurgitation using 3D ultrasound images

Miguel Sotaquira, Mauro Pepi, Gloria Tamborini, Enrico Caiani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Currently, clinical assessment of mitral regurgitation (MR) makes the use of 2D color Doppler imaging for the estimation of the vena contracta (VC) and of the effective regurgitant orifice area (EROA). Since the anatomic regurgitant orifice (ARO) has a 3D shape and it's not circular, it cannot be accurately represented by these 2D parameters. We developed a novel semiautomated method for 3D ARO segmentation and quantification using 3D transesophageal echocardiographic (TEE) datasets, and validated it vs manual planimetry on a set of 25 patients with mild to severe MR. ARO 2D projected area and circularity index (CI) correlated well with planimetry results (r2=0.77 and 0.90 and bias of -0.02 and 0.02, respectively). In 19/25 patients ARO planarity index was less than 0.9, confirming its 3D morphology. Only 1/25 patients exhibited an almost circular ARO (CI > 0.92), while 24/25 patients had more elongated orifices (CI

Original languageEnglish
Title of host publicationComputing in Cardiology
PublisherIEEE Computer Society
Pages13-16
Number of pages4
Volume42
ISBN (Print)9781509006854
DOIs
Publication statusPublished - Feb 16 2016
Event42nd Computing in Cardiology Conference, CinC 2015 - Nice, France
Duration: Sep 6 2015Sep 9 2015

Other

Other42nd Computing in Cardiology Conference, CinC 2015
Country/TerritoryFrance
CityNice
Period9/6/159/9/15

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Computer Science(all)

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