Optical coherence elastography

Author: frdh

August undefined, 2024

WebOptical coherence elastography (OCE) benefits from the superior spatial resolution of OCT and has promising applications, including cancer diagnosis and the detailed characterization of arterial wall biomechanics, both of which are based on the elastic properties of the tissue under investigation. WebDec 3, 2024 · Biomechanical properties of corneal scar are strongly correlated with many corneal diseases and some types of corneal surgery, however, there is no elasticity information available about corneal scar to date. Here, we proposed an acoustic radiation force optical coherence elastography system to evaluate corneal scar elasticity.

Optical coherence elastography: current status and future applications

WebAug 15, 2024 · Optical coherence elastography (OCE) based on digital volume correlation (DVC) has the advantages of full 3D displacements and strain tensor quantification. However, the measurement results are often unreliable due to the poor quality of the optical coherence tomography (OCT) speckle patterns. WebImproved light sources and scanning methods in optical coherence tomography (OCT) have led to rapid growth in systems for high-resolution, quantitative elastography using imaged … population north america

Phase-Resolved Optical Coherence Elastography: An …

WebMar 1, 2014 · Optical coherence elastography (OCE) is one of the most prominent optical elastography techniques [19,20] that utilizes optical coherence tomography (OCT) as the underlying imaging... WebDec 12, 2016 · We utilized optical coherence tomography (OCT) for real-time monitoring of the laser–skin tissue interaction, sparing the patient from an invasive surgical sampling procedure. ... [37,38], and optical coherence elastography [39,40]. In previous studies, we have demonstrated that the photothermolysis of human skin induced by an ablative laser ... WebSep 4, 2024 · Optical coherence elastography (OCE) presents a modality with high sensitivity and very high spatial and temporal resolution. However, OCE has a limited field of view of only 2–5 mm depth. We present a side-facing needle probe to image externally induced shear waves from within soft tissue. shark tools

Deep Learning for High Speed Optical Coherence Elastography

Vector method for strain estimation in phase-sensitive optical ...

WebOptical coherence elastography (OCE) can provide clinically valuable information based on local measurements of tissue stiffness. Improved light sources and scanning methods in … WebJan 14, 2024 · After ten years of progress and innovation, optical coherence elastography (OCE) based on the propagation of mechanical waves has become one of the major and … shark tools accessoriesWebIn optical coherence elastography, a mechanical load is imparted to a tissue and the resulting deformation is measured using optical coherence tomography. The deformation … shark tongue

"WebApr 12, 2024 · Optical coherence elastography (OCE) [2, 3] shows the potential for intramural strain measurement of blood vessels . Relying on optical coherence tomography (OCT) as the imaging modality, OCE has the inherent advantage of … " - Optical coherence elastography

Optical coherence elastography

WebThe optical coherence tomography beam scanned the corneal surface in a lateral sampling grid (~1 × 1 mm; 0.1- and 0.25-mm spacing, respectively, in horizontal and vertical directions) with a minimal distance of 0.15 mm away from the stimulation point to avoid near-field effects of tissue stimulation ( Fig. 1 ). WebPolarisation-sensitive optical coherence tomography (PS-OCT) is a set of hardware and software extensions to OCT which allows us to measure the depth-resolved phase retardation caused by a tissue sample [2], and hence, calculate the birefringence of local regions of the tissue.

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WebJul 5, 2024 · In more recent years, optical coherence tomography (OCT) is another intravascular imaging modality used to obtain high-resolution structural images 5. More recently, the deep penetration of... WebLed by Prof. Stephen Boppart, the Biophotonics Imaging Laboratory is dedicated to developing novel label-free optical imaging technologies and translating these into clinical …

WebRapid and accurate clot diagnostic systems are needed for the assessment of hemodiluted blood coagulation. We develop a real-time optical coherence elastography (OCE) system, … WebOCT Elastography Elastography is a technique that measures and maps the local elastic property of biological tissues. Aiming for detection of micron-scale inclusions, various optical elastography, especially optical coherence elastography (OCE), techniques have been investigated over the past decade.

WebFeb 1, 2015 · We present first quantitative three-dimensional (3D) data sets recorded using optical coherence elastography (OCE) for the diagnosis and detection of prostate cancer (PCa). 120 transrectal ultrasound guided prostate biopsy specimens from 10 men suspected with prostate cancer were imaged using OCE. 3D quantitative mechanical assessment of … WebOptical coherence elastography-measured values of E were statistically different between groups at all pressures (P < 0.1 for IOP of 5 mmHg to 20 mmHg, respectively). The means …

WebMar 20, 2024 · Optical Coherence Elastography (32.1) Fig. 32.1 ( a) Stress components acting at the point P located within a deformable body under load. ( b) Normal strain along the x -axis of the cube in ( a) (i) before and (ii) after compressive deformation. The gray line in (ii) represents the initial length.

WebApr 13, 2024 · Robust methods to compute tissue displacements in optical coherence elastography (OCE) data are paramount, as they play a significant role in the accuracy of tissue elastic properties estimation. In this study, the accuracy of different phase estimators was evaluated on simulated OCE data, where the displacements can be accurately set, … shark tonguesWebDec 3, 2024 · Biomechanical properties of corneal scar are strongly correlated with many corneal diseases and some types of corneal surgery, however, there is no elasticity … population north american citiesWebFor cellular-scale mechanical microscopy of 3D engineered ECM, photonic force optical coherence elastography (PF-OCE) utilizes force from a weakly-focused laser beam to provide localized mechanical excitation on micro-beads embedded in the samples. Local mechanical properties of the ECM around each embedded bead is reconstructed from the ... shark tongue imagesWebIn this work we demonstrate single-shot dynamic elastography with an ultra-fast line-field optical coherence elastography system. By utilizing a high-speed 2D spectrometer, we … shark tools haltom cityWebApr 13, 2024 · Optical coherence elastography (OCE) is an emerging functional imaging technique that quantifies the elasticity of biological tissue by using Doppler optical … population north america 2023WebOptical coherence elastography (OCE) is a group of techniques that utilize optical coherence tomography (OCT) to map, on the micro-scale and to depths of 1–2 mm, a … shark tools fort worthWebApr 1, 2024 · This paper presents the combination of phase sensitive optical coherence tomography (PhS-OCT) imaging system and surface wave method to achieve quantitative evaluation and elastography of the... population north battleford sk