3D dynamic model of healthy and pathologic arteries for ultrasound technique evaluation

A 3D model reproducing the biomechanical behavior of human blood vessels is presented. The model, based on a multilayer geometry composed of right generalized cylinders, enables the representation of different vessel morphologies, including bifurcations, either healthy or affected by stenoses. Using...

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Veröffentlicht in:Medical physics (Lancaster) Jg. 35; H. 12; S. 5440 - 5450
Hauptverfasser: Balocco, Simone, Basset, Olivier, Azencot, Jacques, Tortoli, Piero, Cachard, Christian
Format: Journal Article
Sprache:Englisch
Veröffentlicht: United States American Association of Physicists in Medicine 01.12.2008
Schlagworte:
3D model
acoustic
Acoustics
Algorithms
arterial mechanics
Arteries - diagnostic imaging
Arteries - pathology
Arteries - physiopathology
bifurcation
Bioengineering
Biomechanics
biomedical ultrasonics
Blood Flow Velocity
blood vessels
Blood Vessels - diagnostic imaging
Blood Vessels - pathology
Computer Science
Doppler effect
Doppler ultrasonography
Echocardiography - methods
elasticity
Engineering Sciences
Erythrocytes - metabolism
Finite Element Analysis
Finite element calculations
Finite element methods
Flow visualization
fluid dynamics
Fluid mechanics
Fluid mechanics and rheology
Fluids mechanics
Fourier Analysis
General theory and mathematical aspects
haemodynamics
Hemodynamics
Humans
Image Processing
image segmentation
Imaging
Imaging, Three-Dimensional - methods
Life Sciences
Mechanics
Mechanics of materials
medical image processing
Medical Imaging
Models, Theoretical
phantoms
Phantoms, Imaging
Physics
physiological models
Pressure
Segmentation
Signal and Image Processing
Software
Tissues
Ultrasonics
Ultrasonography
Ultrasonography - methods
ultrasound measurements
Vascular system
3D model
acoustic
fluid dynamics
arterial mechanics
ultrasound measurements
ISSN:0094-2405, 2473-4209
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Beschreibung
Zusammenfassung:A 3D model reproducing the biomechanical behavior of human blood vessels is presented. The model, based on a multilayer geometry composed of right generalized cylinders, enables the representation of different vessel morphologies, including bifurcations, either healthy or affected by stenoses. Using a finite element approach, blood flow is simulated by considering a dynamic displacement of the scatterers (erythrocytes), while arterial pulsation due to the hydraulic pressure is taken into account through a fluid-structure interaction based on a wall model. Each region is acoustically characterized using FIELD II software, which produces the radio frequency echo signals corresponding to echographic scans. Three acoustic physiological phantoms of carotid arteries surrounded by elastic tissue are presented to illustrate the model’s capability. The first corresponds to a healthy blood vessel, the second includes a 50% stenosis, and the third represents a carotid bifurcation. Examples of M mode, B mode and color Doppler images derived from these phantoms are shown. Two examples of M -mode image segmentation and the identification of the atherosclerotic plaque boundaries on Doppler color images are reported. The model could be used as a tool for the preliminary evaluation of ultrasound signal processing and visualization techniques.
Bibliographie:balocco.simone@gmail.com
Electronic mail
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ISSN:0094-2405
2473-4209
DOI:10.1118/1.3006948