Imaging modalities such as ultrasound, MRI and OCT can also effectively measure tissue stiffness. Laser speckle rheology (LSR) offers a new, noncontact optical approach.

The consistency and viscosity can be described by fluid rheology and are frequently Laser Doppler perfusion imaging : methodology and skin applications the only non-invasive technique, except for other laser speckle based techniques,

The rate of temporal speckle fluctuations is, however, Laser speckle microrheology is used to determine a mechanical property of a biological tissue, namely, an elastic modulus. Speckle frames may be acquired by illuminating a coherent light and capturing back-scattered rays in parallel and cross-polarized states with respect to illumination. 2013-05-21 · Laser Speckle Rheology (LSR) is a novel optical technology that enables mechanical evaluation of tissue. In LSR, a coherent laser beam illuminates the tissue and temporal speckle intensity fluctuations are analyzed to evaluate mechanical properties. Mass General Researchers Use Laser Speckle Rheology to Measure Coagulation of Blood February 26th, 2014 Medgadget Editors News Currently it takes expensive equipment and considerable time to do We specifically focus on laser speckle rheology (LSR), a technology that quantifies the mechanical properties of tissues in a rapid, noncontact manner. Complete Patent Searching Database and Patent Data Analytics Services. A laser source, similar to a common laser pointer illuminates the blood sample and a small camera images laser speckle patterns reflected from the sample over time.

Laser speckle rheology

More recently, its primary application has been to image baseline blood flow and activity-dependent changes in blood flow in the brain. We now describe experiments in the rat retina in which LSF was used in conjunction with confocal microscopy to monitor light-evoked changes in blood flow in retinal Optotoune's laser speckle reducers are nothing else than moving diffusers. But the way they are actuated is absolutely unique. Within a height of less than 1mm, electroactive polymers are used to generate an oscillating motion (e.g.

2013-05-21 · Laser Speckle Rheology (LSR) is a novel optical technology that enables mechanical evaluation of tissue. In LSR, a coherent laser beam illuminates the tissue and temporal speckle intensity fluctuations are analyzed to evaluate mechanical properties.

LSR uses an inexpensive laser similar to a common laser pointer to shine laser light on and deformation rates. Laser Speckle Rheology (LSR) offers a novel, non-contact optical approach for evaluating the frequency-dependent viscoelastic properties of hydrogels.

We introduce a novel technology, termed laser speckle micro-rheology (LSM) that offers the unique capability to map the viscoelastic properties of the tissue microenvironment. This innovation will provide important insight into mechano-biology of disease progression.

Complete Patent Searching Database and Patent Data Analytics Services. A laser source, similar to a common laser pointer illuminates the blood sample and a small camera images laser speckle patterns reflected from the sample over time.

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In LSR, a coherent laser beam illuminates the specimen and a high-speed camera acquires the time-varying speckle images. We introduce a novel technology, termed laser speckle micro-rheology (LSM) that offers the unique capability to map the viscoelastic properties of the tissue microenvironment. This innovation will provide important insight into mechano-biology of disease progression. 2016-12-08 · Laser speckle rheology (LSR) is a new optical approach that can quantify the mechanical properties of materials in a non-contact manner by analyzing the temporal fluctuations of laser speckle intensities [7–16].

A laser source, similar to a common laser pointer illuminates the blood sample and a small camera images laser speckle patterns reflected from the sample over time. By analyzing laser speckle intensity fluctuations in real-time, we can measure the viscoelastic properties of blood during coagulation and recover information about multiple coagulation metrics within minutes.
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The speckle-photography method allows determining the f ormation of vortex, as well as the vortex boundary detachment plane and the slope of the velocity vectors in this region.

2016-12-08 · Laser speckle rheology (LSR) is a new optical approach that can quantify the mechanical properties of materials in a non-contact manner by analyzing the temporal fluctuations of laser speckle intensities [7–16]. The technique consists of sending a laser beam into the sample and detecting a speckle pattern created by scattered waves. Brownian motion depends on the viscoelastic structure of the sample (it characterizes speed and distance the particle is free to explore). effectively measure tissue stiffness.

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effectively measure tissue stiffness. Laser speckle rheology (LSR) offers a new, noncontact optical approach. LSR uses an inexpensive laser similar to a common laser pointer to shine laser light on

Briefly, a CCD camera (Cohu, San Diego, CA, U.S.A.) was positioned above the head, and a laser diode (780 nm) was used to illuminate the skull surface in a diffuse manner.