In Vivo Assessment of Architecture and Micro-Finite Element Analysis Derived Indices of Mechanical Properties of Trabecular Bone in the Radius

2002 ◽  
Vol 13 (1) ◽  
pp. 6-17 ◽  
Author(s):  
B. van Rietbergen ◽  
G. von Ingersleben ◽  
C. Chesnut ◽  
B. MacDonald ◽  
H. K. Genant ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Trabecular Bone ◽  
Element Analysis ◽  
In Vivo Assessment

Regional vascular mechanical properties by 3-D intravascular ultrasound with finite-element analysis

1997 ◽  
Vol 272 (1) ◽  
pp. H425-H437 ◽  
Author(s):  
M. J. Vonesh ◽  
C. H. Cho ◽  
J. V. Pinto ◽  
B. J. Kane ◽  
D. S. Lee ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Elastic Modulus ◽  
Intravascular Ultrasound ◽  
Regional Distribution ◽  
Optimization Procedure ◽  
Element Analysis ◽  
Dimensionless Variable

A method employing intravascular ultrasound (IVUS) and simultaneous hemodynamic measurements, with resultant finite element analysis (FEA) of accurate three-dimensional IVUS reconstructions (3-DR), was developed to estimate the regional distribution of arterial elasticity. Human peripheral arterial specimens (iliac and femoral, n = 7) were collected postmortem and perfused at three static transmural pressures: 80, 120, and 160 mmHg. At each pressure, IVUS data were collected at 2.0-mm increments through a 20.0-mm segment and used to create an accurate 3-DR. Mechanical properties were determined over normotensive and hypertensive ranges. An FEA and optimization procedure was implemented in which the elemental elastic modulus was scaled to minimize the displacement error between the computer-predicted and actual deformations. The “optimized” elastic modulus (Eopt) represents an estimate of the component element material stiffness. A dimensionless variable (beta), quantifying structural stiffness, was computed. Eopt of nodiseased tissue regions (n = 80) was greater than atherosclerotic regions (n = 88) for both normotensive (Norm) and hypertensive (Hyp) pressurization: Norm, 9.3 +/- 0.98 vs. 3.5 +/- 0.30; Hyp, 11.3 +/- 0.72 vs. 8.5 +/- 0.47, respectively (mean +/- SE x 10(6) dyn/cm2; P < 0.01 vs. nondiseased). No differences in beta between nondiseased and atherosclerotic tissue were noted at Norm pressurization. With Hyp pressurization, beta of atherosclerotic regions were greater than nondiseased regions: 21.5 +/- 2.21 vs. 14.0 +/- 2.11, respectively (P < 0.03). This method provides a means to identify regional in vivo variations in mechanical properties of arterial tissue.

scholarly journals Potential of in vivo MRI-based nonlinear finite-element analysis for the assessment of trabecular bone post-yield properties

2013 ◽  
Vol 40 (5) ◽  
pp. 052303 ◽  
Author(s):  
Ning Zhang ◽  
Jeremy F. Magland ◽  
Chamith S. Rajapakse ◽  
Yusuf A. Bhagat ◽  
Felix W. Wehrli
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Trabecular Bone ◽  
Nonlinear Finite Element Analysis ◽  
Nonlinear Finite Element ◽  
Element Analysis

scholarly journals In-Vivo Assessment of Femoral Bone Strength Using Finite Element Analysis (FEA) Based on Routine MDCT Imaging: A Preliminary Study on Patients with Vertebral Fractures

PLoS ONE ◽  
2015 ◽  
Vol 10 (2) ◽  
pp. e0116907 ◽  
Author(s):  
Hans Liebl ◽  
Eduardo Grande Garcia ◽  
Fabian Holzner ◽  
Peter B. Noel ◽  
Rainer Burgkart ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bone Strength ◽  
Vertebral Fractures ◽  
Femoral Bone ◽  
Element Analysis ◽  
Preliminary Study ◽  
In Vivo Assessment ◽  
Mdct Imaging

scholarly journals Evaluation of the Mechanical Properties of Human Iliac Trabecular Bone Using Finite Element Analysis

2001 ◽  
Vol 57 (11) ◽  
pp. 1372-1379
Author(s):  
JUN KOHNO ◽  
MASAKO ITO ◽  
MIKA KOHNO ◽  
TOMOKO NAKATA ◽  
KIYOTAKA FURUYAMA ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Trabecular Bone ◽  
Element Analysis
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