Effect of posture change on the geometric features of the healthy carotid bifurcation

Nicolas Aristokleous; Ioannis Seimenis; Yannis Papaharilaou; Georgios Georgiou; Brigitta C. Brott; Andreas S. Anayiotos

doi:10.1109/ITAB.2009.5394446

Effect of posture change on the geometric features of the healthy carotid bifurcation

Nicolas Aristokleous, Ioannis Seimenis, Yannis Papaharilaou, Georgios Georgiou, Brigitta C. Brott, Andreas S. Anayiotos

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

Abstract

Segmented cross sectional MRI images were used to construct 3D virtual models of the carotid bifurcation in 5 healthy volunteers. Geometric features such as bifurcation angle, planarity angle, asymmetry angle tortuosity and curvature were calculated for the normal head posture and were compared to the equivalent values acquired with the head rotated clockwise by up to 80 degrees. The results obtained have shown that head rotation causes: 1) significant variations in bifurcation angle, planarity angle, asymmetry angle and internal carotid artery angle 2) tortuosity changes for the braches but not for the common carotid and 3) significant curvature changes for the common carotid artery (CCA) but not for the branches. The significant geometric changes observed in most subjects with head posture, may cause significant changes in hemodynamics and warrants future investigation of the hemodynamic parameters related to the development of atherosclerotic disease such as low oscillating wall shear stress and particle residence times.

Original language	English
Title of host publication	2009 9th International Conference on Information Technology and Applications in Biomedicine, ITAB 2009
Pages	1-4
DOIs	https://doi.org/10.1109/ITAB.2009.5394446
Publication status	Published - 2009 Dec 1
Externally published	Yes
Event	9th International Conference on Information Technology and Applications in Biomedicine, ITAB 2009 - Larnaca, Cyprus Duration: 2009 Nov 4 → 2009 Nov 7

Conference

Conference	9th International Conference on Information Technology and Applications in Biomedicine, ITAB 2009
Country/Territory	Cyprus
City	Larnaca
Period	2009/11/04 → 2009/11/07

Free keywords

Carotid bifurcation
Geometry characterisation
Image based CFD
Medical imaging
Posture changes

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10.1109/ITAB.2009.5394446

Cite this

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title = "Effect of posture change on the geometric features of the healthy carotid bifurcation",

abstract = "Segmented cross sectional MRI images were used to construct 3D virtual models of the carotid bifurcation in 5 healthy volunteers. Geometric features such as bifurcation angle, planarity angle, asymmetry angle tortuosity and curvature were calculated for the normal head posture and were compared to the equivalent values acquired with the head rotated clockwise by up to 80 degrees. The results obtained have shown that head rotation causes: 1) significant variations in bifurcation angle, planarity angle, asymmetry angle and internal carotid artery angle 2) tortuosity changes for the braches but not for the common carotid and 3) significant curvature changes for the common carotid artery (CCA) but not for the branches. The significant geometric changes observed in most subjects with head posture, may cause significant changes in hemodynamics and warrants future investigation of the hemodynamic parameters related to the development of atherosclerotic disease such as low oscillating wall shear stress and particle residence times.",

keywords = "Carotid bifurcation, Geometry characterisation, Image based CFD, Medical imaging, Posture changes",

author = "Nicolas Aristokleous and Ioannis Seimenis and Yannis Papaharilaou and Georgios Georgiou and Brott, {Brigitta C.} and Anayiotos, {Andreas S.}",

year = "2009",

month = dec,

day = "1",

doi = "10.1109/ITAB.2009.5394446",

language = "English",

isbn = "9781424453795",

pages = "1--4",

booktitle = "2009 9th International Conference on Information Technology and Applications in Biomedicine, ITAB 2009",

note = "9th International Conference on Information Technology and Applications in Biomedicine, ITAB 2009 ; Conference date: 04-11-2009 Through 07-11-2009",

}

Aristokleous, N, Seimenis, I, Papaharilaou, Y, Georgiou, G, Brott, BC & Anayiotos, AS 2009, Effect of posture change on the geometric features of the healthy carotid bifurcation. in 2009 9th International Conference on Information Technology and Applications in Biomedicine, ITAB 2009., 5394446, pp. 1-4, 9th International Conference on Information Technology and Applications in Biomedicine, ITAB 2009, Larnaca, Cyprus, 2009/11/04. https://doi.org/10.1109/ITAB.2009.5394446

Effect of posture change on the geometric features of the healthy carotid bifurcation. / Aristokleous, Nicolas; Seimenis, Ioannis; Papaharilaou, Yannis et al.
2009 9th International Conference on Information Technology and Applications in Biomedicine, ITAB 2009. 2009. p. 1-4 5394446.

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

TY - GEN

T1 - Effect of posture change on the geometric features of the healthy carotid bifurcation

AU - Aristokleous, Nicolas

AU - Seimenis, Ioannis

AU - Papaharilaou, Yannis

AU - Georgiou, Georgios

AU - Brott, Brigitta C.

AU - Anayiotos, Andreas S.

PY - 2009/12/1

Y1 - 2009/12/1

N2 - Segmented cross sectional MRI images were used to construct 3D virtual models of the carotid bifurcation in 5 healthy volunteers. Geometric features such as bifurcation angle, planarity angle, asymmetry angle tortuosity and curvature were calculated for the normal head posture and were compared to the equivalent values acquired with the head rotated clockwise by up to 80 degrees. The results obtained have shown that head rotation causes: 1) significant variations in bifurcation angle, planarity angle, asymmetry angle and internal carotid artery angle 2) tortuosity changes for the braches but not for the common carotid and 3) significant curvature changes for the common carotid artery (CCA) but not for the branches. The significant geometric changes observed in most subjects with head posture, may cause significant changes in hemodynamics and warrants future investigation of the hemodynamic parameters related to the development of atherosclerotic disease such as low oscillating wall shear stress and particle residence times.

AB - Segmented cross sectional MRI images were used to construct 3D virtual models of the carotid bifurcation in 5 healthy volunteers. Geometric features such as bifurcation angle, planarity angle, asymmetry angle tortuosity and curvature were calculated for the normal head posture and were compared to the equivalent values acquired with the head rotated clockwise by up to 80 degrees. The results obtained have shown that head rotation causes: 1) significant variations in bifurcation angle, planarity angle, asymmetry angle and internal carotid artery angle 2) tortuosity changes for the braches but not for the common carotid and 3) significant curvature changes for the common carotid artery (CCA) but not for the branches. The significant geometric changes observed in most subjects with head posture, may cause significant changes in hemodynamics and warrants future investigation of the hemodynamic parameters related to the development of atherosclerotic disease such as low oscillating wall shear stress and particle residence times.

KW - Carotid bifurcation

KW - Geometry characterisation

KW - Image based CFD

KW - Medical imaging

KW - Posture changes

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Y2 - 4 November 2009 through 7 November 2009

ER -

Effect of posture change on the geometric features of the healthy carotid bifurcation

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