Abstract: Disclosed are a foldable screen and a display device. The foldable screen includes: a flexible display panel and a plurality of elastic portions, wherein each of the elastic portions includes each of elastic support members and two connecting rods fixedly connected to each of the elastic support members; wherein the two connecting rods are respectively connected to two flat portions of the flexible display panel, and the elastic support members are configured to supply a support force to the foldable portion in the case that a display surface of the foldable portion of the flexible display panel is coplanar with those of the flat portions.

Abstract: Blood flow rates can be calculated using diffuse speckle contrast analysis in spatial and time domains. In the spatial domain analysis, a multi-pixel image sensor can be used to detect a spatial distribution of speckles in a sample caused by diffusion of light from a coherent light source that is blurred due to the movement of scatterers within the sample (e.g., red blood cells moving within a tissue sample). Statistical analysis of the spatial distribution can be used to calculate blood flow. In the time domain analysis, a slow counter can be used to obtain time-series fluctuations in light intensity in a sample caused by diffusion of light in the sample that is smoothened due to the movement of scatterers. Statistical analysis of the time-series data can be used to calculate blood flow.

Abstract: A system for monitoring foetal growth. The system may include a plurality of devices. Each device of the plurality of devices may be configured to determine measurements of a baby bump over a time period, and may be further configured to store the measurements. The system may also include a server configured to receive the measurements from each of the plurality of devices. The server may be configured to compare the measurements from different devices of the plurality of devices. The system may be further configured to send an alert upon detecting an abnormality based on the measurements from the different devices of the plurality of devices.

Abstract: Disclosed herein are systems and methods for revascularization assessment. The methods can in some cases include one or more of the steps of measuring blood perfusion as a function of time to obtain time series data, mathematically transforming the time series data into a power spectrum, calculating at least one parameter of the power spectrum within a specific frequency range, and using the at least one calculated parameter as a discriminator for the first population and the second population.

Abstract: Provided is an optical probe, and a Raman spectroscopy system using such, including excitation and detection optics coupled to a sampling optics via a beam splitter, in confocal arrangement with a sample focal plane of the sampling optics. The detection optics is arranged to receive Raman signal from the sample focal plane and direct it onto a tip of a detection optical fiber. The optical probe may further include a positioning device mechanically coupled to the sampling optics and configured to control a position of the sample focal plane. In the Raman spectroscopy system a light source is coupled to the excitation optics via an excitation optical fiber, and a spectrometer is coupled to a detection optics via a detection optical fiber. Provided is further a method for measuring Raman signal depth profile in a sample, wherein sample's Raman spectra is measured and stored at different focal plane positions.

Abstract: Method for measuring respiratory vibration on a human or animal skin, including emitting an emission light at a first position on the skin and receiving a diffused light from the emission light at a second position on the skin; storing a vibration signal including a light intensity of the diffused light received over time; wherein the vibration signal corresponds to a mechanical vibration of the skin, and extracting a respiratory parameter from the vibration signal. In particular, at least one of the first position and the second position is in proximity to or at a trachea, a neck or a chest. The system for carrying out the method includes an emitter, a receiver, a circuit, and a processing unit. A set of a sensor module and a skin adhesive patch is also provided.

Abstract: An aspect relates to a placement device for placement in a medium, including: an elongated optical transmission guide to which a photoacoustic transducer is attached to, wherein the photoacoustic transducer may include a first surface facing away from the second end of the elongated optical transmission guide. The photoacoustic transducer may include a 3-Dimensional shape configured to produce an acoustic signal upon absorption of electromagnetic energy received from the elongated optical transmission guide, and an emission profile of the acoustic signal is based on the 3-Dimensional shape, when the photoacoustic transducer is immersed in homogeneous medium. The placement device may be integral to a medical or veterinary device. An aspect relates to a placement tracking system including the placement device and an ultrasound detector. An aspect relates to a method for tracking a portion of a placement device in a medium using the system.

Abstract: Blood flow rates can be calculated using diffuse speckle contrast analysis in spatial and time domains. In the spatial domain analysis, a multi-pixel image sensor can be used to detect a spatial distribution of speckles in a sample caused by diffusion of light from a coherent light source that is blurred due to the movement of scatterers within the sample (e.g., red blood cells moving within a tissue sample). Statistical analysis of the spatial distribution can be used to calculate blood flow. In the time domain analysis, a slow counter can be used to obtain time-series fluctuations in light intensity in a sample caused by diffusion of light in the sample that is smoothened due to the movement of scatterers. Statistical analysis of the time-series data can be used to calculate blood flow.

Abstract: There is provided a lens for use in a human or animal body, the lens comprising a metasurface configured to modulate incident light, wherein the metasurface is composed of at least one light transmissive biomaterial. Also provided is a method of making the lens.

Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.

Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.

Abstract: Provided are a system and a method for in vivo detection of adipose tissue browning. The system includes a fiber probe configured to illuminate light on an adipose tissue site; a spectrometer configured to obtain diffuse reflectance spectrum information from the adipose tissue site; a chromophore measure determining module configured to determine a fraction of lipid chromophore with respect to lipid chromophore and water chromophore based on spectrally unmixing the diffuse reflectance spectrum information in a region of 1050 nm to 1400 nm; and a browning detector module configured to detect adipose tissue browning based on the fraction determined above.

Abstract: There is provided a method for multi-modal imaging of tissue.

Abstract: Method for measuring respiratory vibration on a human or animal skin, including emitting an emission light at a first position on the skin and receiving a diffused light from the emission light at a second position on the skin; storing a vibration signal including a light intensity of the diffused light received over time; wherein the vibration signal corresponds to a mechanical vibration of the skin, and extracting a respiratory parameter from the vibration signal. In particular, at least one of the first position and the second position is in proximity to or at a trachea, a neck or a chest. The system for carrying out the method includes an emitter, a receiver, a circuit, and a processing unit. A set of a sensor module and a skin adhesive patch is also provided.

Abstract: Provided is an optical probe, and a Raman spectroscopy system using such, including excitation and detection optics coupled to a sampling optics via a beam splitter, in confocal arrangement with a sample focal plane of the sampling optics. The detection optics is arranged to receive Raman signal from the sample focal plane and direct it onto a tip of a detection optical fiber. The optical probe may further include a positioning device mechanically coupled to the sampling optics and configured to control a position of the sample focal plane. In the Raman spectroscopy system a light source is coupled to the excitation optics via an excitation optical fiber, and a spectrometer is coupled to a detection optics via a detection optical fiber. Provided is further a method for measuring Raman signal depth profile in a sample, wherein sample's Raman spectra is measured and stored at different focal plane positions.

Abstract: Disclosed herein are systems and methods for revascularization assessment. The methods can in some cases include one or more of the steps of measuring blood perfusion as a function of time to obtain time series data, mathematically transforming the time series data into a power spectrum, calculating at least one parameter of the power spectrum within a specific frequency range, and using the at least one calculated parameter as a discriminator for the first population and the second population.

Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.

Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.

Abstract: Disclosed herein are systems and methods for revascularization assessment. The methods can in some cases include one or more of the steps of measuring blood perfusion as a function of time to obtain time series data, mathematically transforming the time series data into a power spectrum, calculating at least one parameter of the power spectrum within a specific frequency range, and using the at least one calculated parameter as a discriminator for the first population and the second population.

Abstract: Disclosed herein are systems and methods for revascularization assessment. The methods can in some cases include one or more of the steps of measuring blood perfusion as a function of time to obtain time series data, mathematically transforming the time series data into a power spectrum, calculating at least one parameter of the power spectrum within a specific frequency range, and using the at least one calculated parameter as a discriminator for the first population and the second population.