Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 85 for “"Elastography"”.
-
Towards force-correlated ultrasound volume elastography
… importance of accounting for preload when using elastography to assess tissue health. Finally, this device enables the quantification of strain hardening as an additional metric for tissue health. The capability organ volume measurements through freehand ultrasound imaging was demonstrated in a …
-
Application of magnetic resonance elastography to atherosclerosis
… properties of the plaque. Magnetic resonance elastography (MRE) images tissue elasticity by inverting, externally excited, harmonic wave displacement into a stiffness map, known as an elastogram. The aim of this thesis is to computationally and experimentally investigate the application of MRE …
-
Magnetomotive optical coherence elastography for biomedical applications
… resolution, magnetomotive optical coherence elastography (MM-OCE). Biomechanical properties are important because they relate to the tissues’ state of health and they can be utilized for monitoring changes due to pathological processes or therapeutic treatments. In optical coherence …
-
Vibrational characteristics of brain magnetic resonance elastography
… characteristics of magnetic resonance elastography (MRE) of the brain. MRE is a promising, non-invasive methodology for the mapping of shear stiffness of the brain. A mechanical actuator shakes the brain and generates shear waves, which are then imaged with a special MRI sequence …
-
Magnetic resonance elastography studies of human skeletal muscle
… (MRI) technique known as Magnetic Resonance Elastography (MRE). MRE is a phase-contrast imaging technique that enables quantification of tissue mechanical properties by capturing the motion of induced shear waves via a synchronised Motion Encoding Gradient (MEG). The complex shear modulus is …
-
Shear Wave Elastography Based on Optical Coherence Tomography
… mechanical property, numerous research works in elastography have been conducted and had been successfully applied to countless clinical applications. Elastography techniques had been always rooted in medical imaging technique, classified into a range of scales, based on their imaging depth and …
-
Elastography of coronary vessels using optical coherence tomography
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2002.
-
Shear wave ultrasound elastography of the shoulder joint tendons
A dissertation submitted to the Faculty of Health Sciences in full compliance for the requirement for the Master’s Degree in Technology: Radiography at Durban University of Technology, 2020.
-
Characterizing Corneal Biomechanical Properties Using Dynamic Optical Coherence Elastography
Purpose: Optical coherence elastography (OCE) quantifies the tissue’s biomechanical properties through mechanical loading and imaging the tissue response using optical coherence tomography (OCT). Current techniques evaluating corneal stiffness do not account for the influence of key physiological …
-
Ultrasound shear wave elastography imaging with external mechanical vibration
Ultrasound shear wave elastography (SWE) imaging is gaining wide acceptance in clinical practice as both a non-invasive and quantitative diagnostic modality. Most commercial SWE systems generate shear waves using acoustic radiation force (ARF), which requires complex hardware and is therefore only …
-
Deformation correction in ultrasound imaging in an elastography framework
… deformation in ultrasound B-mode imaging and elastography is developed in the framework of elastography. To characterize the change of tissue deformation with contact force, a force sensor is used to provide contact force measurement. Correlation-based displacement estimation techniques are …
-
Assessing the Biomechanical Properties of Cornea using Optical Coherence Elastography
… and mouse cornea in vivo using optical coherence elastography (OCE); 2) assessment the biomechanical properties of mouse corneas of different ages in vivo using air-pulse OCE; 3) the development of a method to spatially map the localized elasticity of the rabbit cornea in situ after partial …
-
Identification of Transversely Isotropic Material Properties from Cardiac Magnetic Resonance Elastography
… heart failure. Although magnetic resonance elastography (MRE) has been used to estimate isotropic stiffness in the heart, myocardium has anisotropic material properties with greatest stiffness along the fibre direction. This thesis investigated two methods for determining global transversely …
-
Magnetomotive dynamics of magnetic particles for optical imaging contrast and elastography
… for enhancing optical imaging contrast and elastography using optical coherence tomography (OCT). A combination of simulations and experiments were performed to study the spatial and temporal characteristics of the magnetomotive (MM) response under dynamic excitation. Magnetomotive contrast …
-
Machine learning, finite element analysis and quasi-static ultrasound nonlinear elastography
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
-
Magnetic resonance elastography and nonlinear inversion problem in the aging brain
… as disease biomarkers. Magnetic resonance elastography (MRE) is a non-invasive imaging technique created, and being developed, based on modeling of mechanical properties of biological tissue. For example, the combination of state-of-the-art MR imaging and finite element based nonlinear …
Page 1 of 5