Characterization of PVA cryogel for intravascular ultrasound elasticity imaging

The present study characterizes the mechanical properties of polyvinyl alcohol (PVA) cryogel in order to show its utility for intravascular elastography. PVA cryogel becomes harder with an increasing number of freeze-thaw cycles, and Young's modulus and Poisson's ratio are measured for sev...

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Vydané v:	IEEE transactions on ultrasonics, ferroelectrics, and frequency control Ročník 50; číslo 10; s. 1318 - 1324
Hlavní autori:	Fromageau, J., Brusseau, E., Vray, D., Gimenez, G., Delachartre, P.
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	New York, NY IEEE 01.10.2003 Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Predmet:	Acoustic measurements Acoustics Applied sciences Arteries Attenuation Bioengineering Biological Biological and medical sciences Biological tissues Biomimetic Materials - chemical synthesis Biomimetic Materials - chemistry Blood Proteins - chemistry Blood Vessels - diagnostic imaging Blood Vessels - physiology Cardiovascular system Chemistry Colloidal state and disperse state Computer Science Cryogels Cylinders Elasticity Engineering Sciences Exact sciences and technology Feasibility Studies Fibronectins - chemistry Frequency estimation General and physical chemistry Geometry Hydrogels Imaging Imaging phantoms Impedance Investigative techniques, diagnostic techniques (general aspects) Life Sciences Mechanical properties Medical Imaging Medical sciences Modulus of elasticity Phantoms, Imaging Physical and chemical studies. Granulometry. Electrokinetic phenomena Physical properties Poissons ratio Polymer industry, paints, wood Polyvinyl Alcohol - chemistry Polyvinyl alcohols Properties and testing Reproducibility of Results Sensitivity and Specificity Signal and Image processing Technology of polymers Ultrasonic imaging Ultrasonic investigative techniques Ultrasonography, Interventional - instrumentation Ultrasonography, Interventional - methods Human Young modulus Polyvinylalcohol Deformation modulus Intravascular space Physical gel Mechanical properties Medical imagery Circulatory system Experimental study Acoustic image Elastography categₛt2i Imagerie Ultrasonore imagerie_ultrasonore
ISSN:	0885-3010, 1525-8955
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Popis
Shrnutí:	The present study characterizes the mechanical properties of polyvinyl alcohol (PVA) cryogel in order to show its utility for intravascular elastography. PVA cryogel becomes harder with an increasing number of freeze-thaw cycles, and Young's modulus and Poisson's ratio are measured for seven samples. Mechanical tests were performed on cylindrical samples with a pressure column and on a hollow cylinder with the calculation of an intravascular elastogram. An image of the Young's modulus was obtained from the elastogram using cylinder geometry properties. Results show the mechanical similitude of PVA cryogel with the biological tissues present in arteries. A good agreement between Young's modulus obtained from pressure column and from elastogram was also observed.
Bibliografia:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 14 ObjectType-Article-1 ObjectType-Feature-2 content type line 23 ObjectType-Undefined-3
ISSN:	0885-3010 1525-8955
DOI:	10.1109/TUFFC.2003.1244748