Vessel lumen and wall

Our work is carried out in a close collaboration with universities in Bogota, Colombia. Our privileged interlocutor is Marcela Hernández Hoyos (MSc 1998 and PhD 2002 at CREATIS).


Research topics


 

Segmentation of the intima-media complex of the carotid artery wall in ultrasound images

Tracking the longitudinal and radial motion of the carotid artery wall in ultrasound images

3D artery centerline extraction, lumen segmentation, stenosis detection and quantification in CTA images

Unsupervised and semi-supervised detection of coronary lesions in 3D CTA images


Segmentation of the intima-media complex of the carotid artery wall in ultrasound images


Combining a bank of shape-adapted filters with a minimal-cost path search. Temporal variations of the intima-media thickness observed in at-risk patients were larger than in healthy controls [1].

Collaboration with team 3.

Carotid artery intima-media thickness assessed across time, based on contour extraction.

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Tracking the longitudinal and radial motion of the carotid artery wall in ultrasound images


Pixel-wise Kalman filter with a control signal keeping track of the initial appearence. The estimated longitudinal motion amplitude was significantly reduced in at-risk patients compared with healthy volunteers [2].

Collaboration with team 3.

Tracking method summary.

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3D artery centerline extraction, lumen segmentation, stenosis detection and quantification in CTA images


Semi-automatic centerline extraction combining a medialness filter with a minimal-cost path search. Automatic lumen segmentation based on a Right Generalized Cylinder model. Automatic stenosis detection and quantification using diameter regression. Participation in MICCAI international challenges: London 2009 (carotids) and Nice 2012 (coronaries) [3][4].

Collaboration with Universidad de los Andes and Pontificia Universidad Javeriana, Bogotá, Colombia.

Coronary lesions detected by the semi-supervised method (LPU).

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References