Digital image based elasto-tomography; proof of concept studies for surface based mechanical property reconstruction
Ashton Peters,Arnaud Milsant,Jérôme Rouzé,Lawrence A. Ray,James Geoffrey Chase,Elijah Evenstar Wallace Van Houten +5 more
Reads0
Chats0
TLDR
Proof of concept studies are presented for both the calibration of the digital imaging system and the inverse reconstruction algorithm that identified high stiffness tumors in the majority of test cases, even with the addition of random noise based on expected calibration accuracy.Abstract:
Digital Image-based Elasto-Tomography (DIET) is a novel method of determining the distribution of elastic properties within the breast. Using an array of calibrated digital cameras and an inverse reconstruction algorithm, DIET allows reconstruction of the internal elastic stiffness distribution of the breast using only motions at the breast surface. This reconstructed stiffness should clearly show carcinoma based on their high elastic property contrast with healthy tissue. Proof of concept studies are presented for both the calibration of the digital imaging system and the inverse reconstruction algorithm. The reconstruction algorithm identified high stiffness tumors in the majority of test cases, even with the addition of random noise based on expected calibration accuracy.read more
Citations
More filters
Journal ArticleDOI
Fast normalized cross correlation for motion tracking using basis functions
TL;DR: A significantly faster method of calculating the Normalized cross correlation (NCC) is presented that uses rectangular approximations in place of randomly placed landmark points or the natural marks on the breast, dramatically reducing computational requirements.
Journal ArticleDOI
Digital Image-Based Elasto-Tomography: First Experiments in Surface Based Mechanical Property Estimation of Gelatine Phantoms
Ashton Peters,Stefan Wortmann,Rodney B. Elliott,Mark P. Staiger,James Geoffrey Chase,Elijah E. W. Van Houten +5 more
TL;DR: In this paper, the stiffness of a soft tissue approximating gelatine phantom was estimated by using a motion error-based mechanical property reconstruction method, and the reconstructed stiffness compared favorably with independently measured stiffness properties when experimental assumptions were considered.
Journal ArticleDOI
Estimating the non-homogeneous elastic modulus distribution from surface deformations
TL;DR: In this article, the inverse problem in finite elasticity for the non-homogeneous shear modulus distribution was formulated as a constrained optimization problem under regularization and solved utilizing the adjoint equations.
Journal ArticleDOI
Digital Image Elasto-Tomography: Combinatorial and Hybrid Optimization Algorithms for Shape-Based Elastic Property Reconstruction
TL;DR: Results from the application of three nonlinear stiffness reconstruction algorithms to two simple cylindrical geometries demonstrated for the first time the ability of this type of algorithm to reconstruct internal stiffness using only experimentally measured surface motion data.
Journal ArticleDOI
Silicone breast phantoms for elastographic imaging evaluation.
TL;DR: The phantoms presented promise aid to researchers in elastographic imaging modalities for breast cancer detection and provide a foundation for silicone based phantom materials for mimicking soft tissues of other human organs.
References
More filters
Book
Introductory Techniques for 3-D Computer Vision
Emanuele Trucco,Alessandro Verri +1 more
TL;DR: A guide to well-tested theory and algorithms including solutions of problems encountered in modern computer vision, showing how fundamental problems are solved using both intensity and range images, the most popular types of images used today.
Journal ArticleDOI
Magnetic resonance elastography by direct visualization of propagating acoustic strain waves
Raja Muthupillai,D. J. Lomas,Phillip J. Rossman,James F. Greenleaf,Armando Manduca,Richard L. Ehman +5 more
TL;DR: The results indicate that displacement patterns corresponding to cyclic displacements smaller than 200 nanometers can be measured and suggest the feasibility of a medical imaging technique for delineating elasticity and other mechanical properties of tissue.
Journal ArticleDOI
Elastic Moduli of Breast and Prostate Tissues under Compression
TL;DR: To evaluate the dynamic range of tissue imaged by elastography, the mechanical behavior of breast and prostate tissue samples subject to compression loading has been investigated and the data show that breast fat tissue has a constant modulus over the strain range tested while the other tissues have a modulus that is dependent on the strain level.