PURPOSE: To develop and validate an automated segmentation technique for the detection of the lumen and outer wall boundaries in MR vessel wall studies of the common carotid artery. MATERIALS AND METHODS: A new segmentation method was developed using a three-dimensional (3D) deformable vessel model requiring only one single user interaction by combining 3D MR angiography (MRA) and 2D vessel wall images. This vessel model is a 3D cylindrical Non-Uniform Rational B-Spline (NURBS) surface which can be deformed to fit the underlying image data. Image data of 45 subjects was used to validate the method by comparing manual and automatic segmentations. Vessel wall thickness and volume measurements obtained by both methods were compared. RESULTS: Substantial agreement was observed between manual and automatic segmentation; over 85% of the vessel wall contours were segmented successfully. The interclass correlation was 0.690 for the vessel wall thickness and 0.793 for the vessel wall volume. Compared with manual image analysis, the automated method demonstrated improved interobserver agreement and inter-scan reproducibility. Additionally, the proposed automated image analysis approach was substantially faster. CONCLUSION: This new automated method can reduce analysis time and enhance reproducibility of the quantification of vessel wall dimensions in clinical studies.
PURPOSE: To develop and validate an automated segmentation technique for the detection of the lumen and outer wall boundaries in MR vessel wall studies of the common carotid artery. MATERIALS AND METHODS: A new segmentation method was developed using a three-dimensional (3D) deformable vessel model requiring only one single user interaction by combining 3D MR angiography (MRA) and 2D vessel wall images. This vessel model is a 3D cylindrical Non-Uniform Rational B-Spline (NURBS) surface which can be deformed to fit the underlying image data. Image data of 45 subjects was used to validate the method by comparing manual and automatic segmentations. Vessel wall thickness and volume measurements obtained by both methods were compared. RESULTS: Substantial agreement was observed between manual and automatic segmentation; over 85% of the vessel wall contours were segmented successfully. The interclass correlation was 0.690 for the vessel wall thickness and 0.793 for the vessel wall volume. Compared with manual image analysis, the automated method demonstrated improved interobserver agreement and inter-scan reproducibility. Additionally, the proposed automated image analysis approach was substantially faster. CONCLUSION: This new automated method can reduce analysis time and enhance reproducibility of the quantification of vessel wall dimensions in clinical studies.
Authors: Xinpei Gao; Pieter H Kitslaar; Ricardo P J Budde; Shengxian Tu; Michiel A de Graaf; Liang Xu; Bo Xu; Arthur J H A Scholte; Jouke Dijkstra; Johan H C Reiber Journal: Int J Cardiovasc Imaging Date: 2016-05-21 Impact factor: 2.357
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Authors: Arna van Engelen; Wiro J Niessen; Stefan Klein; Harald C Groen; Hence J M Verhagen; Jolanda J Wentzel; Aad van der Lugt; Marleen de Bruijne Journal: PLoS One Date: 2014-04-24 Impact factor: 3.240
Authors: Casper Emil Christensen; Samaira Younis; Ulrich Lindberg; Vincent Oltman Boer; Patrick de Koning; Esben Thade Petersen; Olaf Bjarne Paulson; Henrik Bo Wiberg Larsson; Faisal Mohammad Amin; Messoud Ashina Journal: J Headache Pain Date: 2019-05-06 Impact factor: 7.277
Authors: Laura Chiavaroli; Arash Mirrahimi; Christopher Ireland; Sandra Mitchell; Sandhya Sahye-Pudaruth; Judy Coveney; Omodele Olowoyeye; Tishan Maraj; Darshna Patel; Russell J de Souza; Livia S A Augustin; Balachandran Bashyam; Sonia Blanco Mejia; Stephanie K Nishi; Lawrence A Leiter; Robert G Josse; Gail McKeown-Eyssen; Alan R Moody; Alan R Berger; Cyril W C Kendall; John L Sievenpiper; David J A Jenkins Journal: BMJ Open Date: 2016-07-07 Impact factor: 2.692