Abstract: Systems, methods, apparatuses, and computer program products for contact-free heart rate monitoring and/or measurement are provided. One method may include receiving video(s) that include visual frame(s) of individual s) performing exercises, detecting some exposed skin from the video(s), and performing motion compensation to generate color signals for the exposed skin to precisely align frames of the exposed skin. The method may also include generating the color signals by estimating a skin color for each frame by taking a spatial average over pixels of a cheek of the face(s) for R, G, and B channels, respectively, applying an operation to remove remaining motion traces from the frames such that the heart rate traces dominate, and extracting and/or outputting the heart rate of the individuals using a frequency estimator of the skin color signals.

Abstract: The present embodiments provide systems and methods suitable for delivering an agent including a plurality of particles to a target site. In example embodiments, a system suitable for delivering an agent to a target site includes a catheter having a first wall defining a lumen sized for delivery of the agent to the target site. The catheter has a distal end terminating with a primary opening of the lumen, an opposing proximal end, and a longitudinal axis extending between the distal end and the proximal end. At least one secondary opening is formed at the distal end, wherein the secondary opening is configured to allow fluid to flow through the secondary opening to create a steady flow of fluid at an angle with respect to the longitudinal axis and prevent the plurality of particles from flowing through the secondary opening.

Abstract: While performing heart rate estimation of a user, if the user is in motion, a signal is measured and is likely to have noise data, which in turn affects accuracy of estimated heart rate value. Method and system for heart rate estimation when the user is in motion is disclosed. The system estimates value of a noise signal present in a measured PPG signal by performing a Principal Component Analysis (PCA) of an accelerometer signal collected along with the PPG signal. The system further estimates value of a true cardiac signal for a time window, based on value of the true cardiac signal in a pre-defined number of previous time windows. The system then estimates frequency spectrum of a clean PPG signal based on the estimated noise signal and the true cardiac signal. The system further performs heart rate estimation based on the clean PPG signal.

Abstract: A method, system, apparatus, and/or device to determine a condition of a user using a wearable device with a miniaturized spectrometer. The method, system, apparatus, and/or device may include: a band configured to extend at least partially around a body part of a user, the body part comprising an internal feature within the body part; a light source embedded in the band, where the light source is configured to emit light into the body part as the user wears the band; a collimator; an optical filter; and an optical sensor, where the collimator, optical sensor, or the optical filter are arranged together to form a stack embedded in the band.

Abstract: A system and method for efficiently transmitting signals from a sensing device to a remote device are disclosed. The sensing device includes at least one sensor for sensing information. The sensed information could be associated with heart activity. The sensing device smooths the sensed signal and then calculates the difference between the smoothed sensed signal and a locally stored baseline signal to determine a differential signal, which can be transmitted as a smaller packet of data than the full sensed signal. The remote device receives information associated with the differential signal and uses a local copy of the baseline signal to reconstruct the original smoothed sensed signal.

Abstract: A system for displaying information indicative of driving conditions, to a driver, using a smart ring are disclosed. An exemplary system includes a smart ring with a ring band having a plurality of surfaces including an inner surface, an outer surface, a first side surface, and a second side surface. The system further includes a processor, configured to obtain data from a communication module within the ring band, or from one or more sensors disposed within the ring band. The obtained data are representative of information indicative of one or more driving conditions to be displayed to the driver. The smart ring also includes a light emitting diode (LED) display disposed on at least one of the plurality of surfaces, and configured to present information indicative of the one or more driving conditions.

Abstract: The present invention relates to an apparatus for eliminating motion artifacts and a method thereof, and the method for eliminating motion artifacts includes steps of receiving a PPG signal and three-axis (X-axis, Y-axis, and Z-axis) acceleration signals measured from an examinee, extracting the PPG signal and the three-axis acceleration signals by a period of a predetermined unit of time and filtering the signals at a preset bandwidth, Fourier-transforming the PPG signal and the three-axis acceleration signals corresponding to the extracted period, arranging power spectra of the X-axis, Y-axis, and Z-axis in ascending order of value of average power spectrum by calculating an average power of each frequency domain of the three-axis accelerations, and extracting a final power spectrum of the PPG signal by sequentially eliminating power spectra of the X, Y, and Z-axis accelerations from the power spectrum of the PPG signal in an order of arrangement.

Abstract: An electronic device according to an embodiment of the present invention may comprise: a housing comprising a first glass plate, a second glass plate facing in the opposite direction to the first glass plate, and a side member surrounding the space between the first glass plate and the second glass plate, the second plate comprising an outer surface facing in the opposite direction to the first plate and an inner surface facing the first plate; an inner middle plate positioned between the first plate and the second plate; a touch screen display positioned between the middle plate and the first plate; an opaque layer comprising a first opening and a second opening positioned within 150 mm from the first opening, the opaque layer being directly or indirectly attached to the inner surface of the second plate comprising a hole overlapping with the first opening but comprising no hole overlapping with the second opening; a camera assembly partially positioned inside the hole of the second plate and the first openi

Abstract: The invention provides for a system for in vivo real time measurement of NADH recovery kinetics, comprising: 1) a specific pulse sequence to non-destructively, yet effectively, photobleach NADH for measurement of NADH recovery kinetics; 2) illumination light parameters to acquire NADH fluorescence before and after photobleaching, without causing fluorescence bleaching artifacts, for measurement of NADH recovery kinetics; and 3) configurations for devices capable of photobleaching NADH by at least 10% within tissues for effective measurement of NADH recovery kinetics in tissues within a living subject or excised tissues and organs.

Abstract: It is possible to improve a measurement accuracy of a liquid flow volume, thereby improving reproducibility of a measured value. Provided is a flow volume measuring device including a light source which emits light to a measuring-target region; a light receiving element which receives light scattered at the measuring-target region from the light emitted from the light source; a contact member having translucency with respect to a wavelength of the emitted light and a wavelength of the scattered light, the contact member including a surface which faces the measuring-target region and with which the measuring-target region is contactable over the entire surface; and a flow volume measuring unit which measures a flow volume of liquid flowing through the measuring-target region based upon the scattered light.

Abstract: Apparatuses, methods, and systems are disclosed to establish sensor locations on a human's body. A reference plane structure establishes a measurement datum. A plurality of fixtures is provided. Each fixture of the plurality contains at least one sensor and provides a tensile preload to the at least one sensor. A first fixture of the plurality is supported by the reference plane structure. A location on the human's body is associated with each sensor. Each location on the human's body is established using the measurement datum and a contact point of each sensor. The plurality is articulated together to conform to a shape of the human's body such that, when in use, each sensor is in contact with the human's body, and each location is defined by the measurement datum and a contact point of each sensor.

Abstract: Systems, methods, and computer software for detecting atrial fibrillation are described. Photoplethysmographic (PPG) signal data may be received as communicated by a PPG sensor of a wearable device worn by a user. Heartbeats from a portion of the PPG signal data may be determined and a heart rhythm type may be determined based on at least the heartbeats. A determination of whether the heart rhythm type includes Atrial Fibrillation (AF) may be made, and, when AF is detected, an AF detection alert may be displayed at the wearable device.

Abstract: A camera sensitive to near infrared light is placed proximate to the skin of a user and the area illuminated by one or more infrared light sources. A set of images of one or more blood vessels is obtained at successive times. The images are processed to determine a change in size of the vessel(s) from one time to another, corresponding to expansion and contraction of the vessels responsive to contraction of the user's heart. This change may be used to determine pulse rate, elasticity of the vessel, blood pressure, or other data about the user's physiological status. The data may be used to assess health status at a particular time, determine health trends for the user, and so forth.

Abstract: In some embodiments, features related to inter-beat intervals (IBI) detected by a PPG sensor of a wearable device are extracted and provided to a cardiovascular classifier in order to detect likely instances of a cardiac condition such as atrial fibrillation. Some embodiments use features related to the entropy of the IBI data to improve the predictions generated by the cardiovascular classifier. In some embodiments, co-information between the IBI data and IBI data gathered from healthy and AF populations is determined in order to derive features that represent the probability that a given sample of IBI data represents AF or a normal sinus rhythm. In response to determining likely instances of AF based on these features, the wearable device may obtain clinically acceptable data, such as an ECG, to be transmitted to a separate device for review by a clinician.

Abstract: A noninvasive method of sensing an arterial pulse on a paw pad includes providing an instrument having a probe; placing the probe housing a tactile transducer and a reflective optical coupler comprising an infrared emitter and an infrared detector on a subject's metatarsal or metacarpal pad; emitting infrared light from the emitter; detecting infrared light with the detector; maintaining a linear direct current bias of the detector; converting a signal emitted by the infrared detector into a digital pulse that drives the tactile transducer to emit tactile pulses; and counting the tactile pulses over a predetermined time. An arterial pulse detection system includes a probe. The probe contains an optical sensor and a tactile transducer to which instrumentation is electrically connected. The optical sensor includes an infrared emitter and an infrared detector.

Abstract: A method for monitoring specific activity parameters of the human heart, where ECG and PCG signal monitoring is performed simultaneously by at least two electrodes placed on the chest in such a way that the ECG signal is utilized as a reference time point during PCG monitoring, and monitoring is performed with a measuring unit consisting of a couple of measuring heads containing combined ECG and PCG electrodes, a controlling master measuring head and a slave measuring head performing synchronized implementation, and a computing evaluating unit which is in wireless data communication connection with the above unit and is capable of data processing. ECG and PCG signals are simultaneously monitored by two measuring heads, each comprising an ECG electrode and a PCG electrode, one of the measuring heads serving as a master measuring head and the other one of the measuring heads serving as a slave measuring head.

Abstract: Systems and methods are provided for vibrations detection in a scene. Systems comprise at least one coherent light source configured to illuminate the scene, an optical unit configured to focus scattered light from the scene onto a pixelated detector, the detector configured to provide pixel intensity signals, and a processing unit configured to analyze the pixel intensity signals over the pixels of the detector to derive a vibration spectrum of elements in the scene that correspond to the pixels. The signal modulation at each pixel may be used to indicate the vibrations of the scene element(s) that corresponds to the pixel(s). Vibration information concerning the scene may be used to direct other methods of vibration measurements, such as speckle interferometry, according to derived vibration images of the scene.

Abstract: An ambient light signal adjustment method, a chip and electronic equipment. The method includes: receiving a first ambient light signal which is an ambient light signal acquired by a photo plethysmor graph (PPG) sensor; then determining, according to an intensity of the first ambient light signal automatically, whether to turn on an ambient light cancellation circuit which is configured to adjust the first ambient light signal according to the intensity of the first ambient light signal; and if it is determined to turn on the ambient light cancellation circuit, then adjusting a cancellation signal intensity of the ambient light cancellation circuit automatically to enable an intensity of the adjusted first ambient light signal to be within a preset range. Adjustment of the ambient light signal acquired by the PPG sensor is realized, thereby ensuring accuracy of a wearable device to detect a physiological characteristic of a user.

Abstract: A pulse wave detector includes a pulse wave detection sensor which is configured to detect a pressure pulse wave from an artery of a measurement subject, a pressing member which supports the pulse wave detection sensor and is configured to be moved in one direction to press the pulse wave detection sensor against a body surface of the measurement subject, a plurality of guiding members which are placed around the pulse wave detection sensor in a plan view as seen in the one direction and extend in the one direction, and a supporting member which supports the plurality of guiding members. The pressing member includes pass-through portions through which the plurality of guiding members are passed to be movable along the guiding members, respectively.

Abstract: The present invention relates to the field of medical emergency signaling and user-activated medical alarm systems. In particular, a wrist-worn medical alert device (10) for conveying an emergency message to a caregiver (80) is presented, wherein the medical alert device is adapted to be worn at a wrist (101) of a subject (100), the device comprising: a PPG unit (20) adapted to acquire a first PPG signal (26) at first wavelength (?1) and a second PPG signal (25) at second wavelength (?2) over time at the wrist of the subject; a processing unit (30) adapted to receive the first and second PPG signals (25, 26) and to determine a finger movement of one or more fingers (102) of the subject (100) based on the first and second PPG signals; and a communication unit (40) adapted to transmit, based on the determined finger movement, an emergency message to the caregiver (80). The present invention further relates to a corresponding system (1), method (60) and computer program for carrying out said method.

Abstract: Described is an apparatus which comprises: a current source to generate a current having AC and DC components; a current-to-voltage converter to convert the current or a copy of the current to a voltage proportional to a resistance, the voltage having AC and DC components that correspond to the AC and DC components of the current; a first sample-and-hold circuit to sample and filter the AC component from the voltage and to provide an output voltage with the DC component; a second sample-and-hold circuit to sample the output voltage; a voltage-to-current converter to convert the sampled output voltage to a corresponding current; and an amplifier to receive the output voltage.

Abstract: Provided according to embodiments of the invention are photoplethysmography probes designed for use on a user's nasal alar. Methods of using such photoplethysmography probes are also provided herein.

Abstract: A biological analysis device includes: a pulse pressure calculation unit that calculates a pulse pressure index related to a pulse pressure of a biological body; an average blood pressure calculation unit that calculates an average blood pressure index related to an average blood pressure of the biological body; and a blood pressure calculation unit that calculates a systolic blood pressure and a diastolic blood pressure in accordance with the pulse pressure index and the average blood pressure index. At least one of the pulse pressure index and the average blood pressure index is calculated in accordance with a blood flow index which is calculated from an intensity spectrum related to a frequency of light reflected and received from an inside of the biological body through radiation of a laser beam and is related to a blood flow of the biological body.

Abstract: Disclosed herein is a blood pressure measuring device including: a pressure measuring tool 110; a fastening member 120 configured to fasten the pressure measuring tool 110 in rest position onto a skin region covering an anastomotic region of a shunt blood vessel 201; and a control circuit 130 configured to receive an input signal from the pressure measuring tool 110 and to process the input signal to calculate a pressure inside the anastomotic region of the shunt blood vessel 201.

Abstract: An electronic device and a method are provided. The electronic device can include a motion sensor, a heart rate monitor sensor, and a processor functionally coupled with the motion sensor and the heart rate monitor sensor. The processor can be configured to obtain first motion sensor data for a first duration using the motion sensor, obtain first heartbeat data for the first duration using the heart rate monitor sensor, determine an exercise type based on the first motion sensor data, determine a heartbeat prediction range based on at least one of the first motion sensor data, the exercise type, and the first heartbeat data, obtain second heartbeat data for a second duration using the heart rate monitor sensor, determine whether the second heartbeat data falls within the heartbeat prediction range, and determine heartbeat data of the second duration based on the determination result.

Abstract: An electronic device includes a light emitter emitting visible light, an infrared emitter emitting infrared light, at least one detector detecting an electromagnetic wave, and at least one processor configured to obtain a user input to obtain spectral data of a target object, in response to obtaining the user input, emit the visible light by using the light emitter and emit the infrared light by using the infrared emitter, obtain a first reflected signal of the visible light reflected by the target object and a second reflected signal of the infrared light reflected by the target object, using the at least one detector, and generate the spectral data of the target object based on the first reflected signal and the second reflected signal.

Abstract: A system for monitoring and evaluating the ventricular contractility of a heart muscle includes a device for electrically stimulating the heart muscle of a patient, and an extracorporeal blood pressure sensor. A record, responsive to stimulated ventricular contractions, is created by the pressure sensor. The response record is then evaluated to identify a pressure/time, rate-change in arterial pressure (dp/dt) that results within the time duration of a ventricular contraction in a cardiac cycle. In turn, dp/dt is evaluated as an indicator of ventricular contractility and the health of the patient's heart muscle.

Abstract: A wearable heart rate monitoring device includes an optical sensor configured to translate test light reflected from a wearer of the wearable heart rate monitoring device into a machine-readable heart rate signal. The wearable heart rate monitoring device also includes an elevation sensor configured to translate an elevation of the wearable heart rate monitoring device into a machine-readable elevation signal. The wearable heart rate monitoring device further includes a heart rate reporting machine configured to output an estimated heart rate based on at least the machine-readable heart rate signal and the machine-readable elevation signal.

Abstract: An activity monitoring circuit enables power conservation for an activity monitoring system. The activity monitoring system includes a sensor device that generates activity data based on detected movement. An activity monitoring circuit receives the activity data as input from the sensor device, and processes the activity data. Based on the processing, the activity monitoring circuit signals the sensor device to change a duty cycle of its operation, by adjusting how long it is on and off. The activity monitoring circuit can include a sensor hub that determines an activity state indicated by the activity data and generates a prediction of stability of the determined activity state based on historical activity data. Based on activity state and stability, the sensor hub can determine a duty cycle for operation of the sensor device.

Abstract: The present disclosure publishes a vulnerable plaque identification method. The method includes: receiving an angiocarpy image sent by a terminal device; transforming the angiocarpy image in an original Cartesian coordinate system into a polar coordinate system to form a polarization image; constructing a faster RCNN architecture and accomplishing a training; inputting the polarization image into the faster RCNN architecture accomplished the training to identify the polarization image, and outputting the image with the marked vulnerable plaques; feed backing the image with the marked vulnerable plaques to the terminal device. The present disclosure also publishes an application server and a computer readable medium. The vulnerable plaque identification method, the application server, and the computer readable medium can quickly and correctly conform the position of the vulnerable plaque.

Abstract: A heart monitoring device comprises an enclosure with various sensors and components. The enclosure has a first groove on a top surface, sized to fit a phalange of a subject's right hand. When the device is held with the corresponding phalange keyed into the first groove, the device is in a proper orientation for recording the subject's heart activity. The device includes a plurality of electrodes configured to create one or more electrical circuits across a human heart. The electrodes include a right thumb electrode placed on a side of the enclosure for coupling to the subject's right thumb and an upper chest electrode and a lower chest electrode placed on a bottom surface of the enclosure for coupling to the subject's chest. The heart monitoring device also has a plurality of pulse oximeters placed in the first groove and configured to measure blood oxygen levels of the corresponding phalange.

Abstract: A PPG system includes a processor configured to receive a PPG signal from a PPG sensor, the PPG signal having a plurality of pulses each representing a heartbeat of a patient. The processor is also configured to determine an amplitude variance of the plurality of pulses over a time period, determine a pulse period variance of the PPG signal over the time period, determine a cardiac stability based on a ratio of the amplitude variance and the pulse period variance, and provide an indication of the cardiac stability via a display. The amplitude variance includes an average of squared differences of an amplitude of a peak of each pulse of the plurality of pulses from a mean amplitude of the plurality of pulses over the time period, and the mean amplitude includes an average of respective midpoints of each of the plurality of pulses over the time period.

Abstract: Biometric sensor systems are provided for identifying fundamental heart rate harmonics within noisy sensor signals. The system calculates a local signal-to-noise ratio for one or more identified frequency bands received in a biometric signal. The identified frequency bands are ranked based upon the calculated local signal-to-noise ratio. The fundamental heart rate is identified based upon the ranking of the identified frequency bands.

Abstract: Provided is a refrigerator and control method for refrigerator and method for opening a refrigerator door. While a user is holding an object in both hands, a door may be automatically and additionally opened using another part of a body other than hands.

Abstract: The invention relates to an assistance device, an assistance system and an assistance method for assisting a practitioner in an interventional hemodynamic (e.g fractional flow reserve (FFR)) measurement on a subject. The FFR pressure measurements are combined with an, for example, angiography-based assessment of the coronary vessel geometry. An advanced computational fluid dynamics model may be employed to add flow and myocardial resistance data based on the interventional pressure values and on a vascular model generated prior to the intervention. In case that these data are available prior to the intervention, the location of most optimal positions for pressure measurements can be pre-calculated and by overlay of the vessel tree, for example, on the X-ray projection, advice can be given for the interventional cardiologist during the intervention.

Abstract: A health information system includes a health information data storage machine and a healthcare analytics processor configured to extract healthcare related commentary of healthcare consumers from a social media data storage machine and match portions of the healthcare related commentary to health information of the social media commentators in a combined health information data source. The healthcare analytics processor identifies relationships between consumer sentiment expressed in the social media information and consumer experiences, product usage, diagnoses and outcomes recorded in the health information. Benchmarks and measures of healthcare outcomes and treatments are generated based on matching consumer commentary and consumer sentiments with corresponding indications of actual healthcare experiences of the commentator recorded in the health information.

Abstract: A device and method to obtain accurate blood pressure measurement without a cuff, using a plurality of PPG sensors, in a non-clinical setting; that is, without the measurement being administered by a medically trained person. Unique and novel elements make this possible by eliminating the confounding effects of gravity in cases where the lay user is not careful to position the device at a specific or consistent elevation relative to that of the heart.

Abstract: Methods, systems, and storage media relating to a circulatory health monitor device are disclosed herein. In an embodiment, such a device may be positioned or disposed on and/or in contact with a subject to measure blood pressure and/or heart rate. The device may include one or more electrocardiographic (ECG) signal sensors, one or more photoplethysmographic (PPG) sensors, and a controller. The controller may activate at a low resolution a PPG measurement of the subject in relation to an ECG signal feature to identify a PPG signal feature location or region in the PPG measurement. The controller may further activate at a high resolution PPG measurement of the subject at the PPG signal feature region to identify the PPG signal feature, and may determine blood pressure and/or heart rate therefrom. Other embodiments may be disclosed and/or claimed.

Abstract: The disclosure relates, in part, to computer-based visualization of stent position within a blood vessel. A stent can be visualized using intravascular data and subsequently displayed as stent struts or portions of a stent as a part of a one or more graphic user interface(s) (GUI). In one embodiment, the method includes steps to distinguish stented region(s) from background noise using an amalgamation of angular stent strut information for a given neighborhood of frames. The GUI can include views of a blood vessel generated using distance measurements and demarcating the actual stented region(s), which provides visualization of the stented region. The disclosure also relates to display of intravascular diagnostic information such as indicators. An indicator can be generated and displayed with images generated using an intravascular data collection system. The indicators can include one or more viewable graphical elements suitable for indicating diagnostic information such as stent information.

Abstract: The invention relates to a recording device (10) comprising a scan head carrier (18) for moving the scan head (20) across a scan area (42) of a cavity, the scan area (42) extending around the scan head (20). A flat or film-like, elastically stretchable material extends between the scan head (20) and the scan area (42), which material can be pressed against the scan area (42) in a balloon (12)-type manner using overpressure. The scan head guide (18) passes through the balloon outlet (16) of the balloon (12) towards the scan head (20). In particular, a control device (44) determines the shape of the cavity (40) against which the material is pressed, from deformation of the material when applying said overpressure. A second extraoral scanning head (43) scans deformations during pressurization of the film-like material.

Abstract: The present invention relates to a device and a method for detecting a feature of an arterial blood pressure (ABP) waveform. The feature detecting method of an ABP waveform according to an exemplary embodiment of the present invention includes: searching a peak and a trough; detecting a systolic peak based on a time interval between a peak and a neighboring peak and an average pressure value; detecting a pulse onset with respect to a trough directly before the systolic peak; extracting a candidate of a dicrotic notch based on a magnitude of the systolic peak and a measurement time; detecting a point having a lowest pressure value among candidates of the dicrotic notch as a dicrotic notch and detecting a dicrotic peak based on the dicrotic notch; and classifying the detected dicrotic notches into a normal notch and a transient notch.

Abstract: A monitoring device includes a biasing element having opposite first and second end portions, an earbud attached to the biasing element first end portion, and a sensing element attached to the biasing element second end portion. The earbud has a first mass, and the sensing element has a second mass that is less than the first mass. The biasing element is configured to urge the sensing element into contact with a portion of the ear when the earbud is inserted into the ear. The biasing element decouples motion of the earbud from the sensing element. The sensing element includes at least one energy emitter configured to direct energy at a target region of the ear and at least one detector configured to detect an energy response signal from the target region or a region adjacent the target region.

Abstract: An apparatus includes a band configured to attach a physical activity measurement device to a human body, and electroactive material comprised in the band. The electroactive material is configured to change at least one of size and shape of the band in response to an electric input from the physical activity measurement device to the electroactive material.

Abstract: A surgical elevator has an oximeter sensor at its tip, which allows measuring of oxygen saturation of a tissue.

Abstract: A biological information detecting device includes at least one light emitting section, a first light receiving section, a second light receiving section, and a processing section configured to acquire biological information on the basis of at least one a first detection signal acquired from the first light receiving section and a second detection signal acquired from the second light receiving section. The processing section switches an operation mode to one of a first operation mode for acquiring the biological information on the basis of the first detection signal and the second detection signal and a second operation mode for acquiring the biological information on the basis of one detection signal of the first detection signal and the second detection signal.

Abstract: A method for determining a heart rate (HR) using an infrared rays (IR) sensor and an electronic device is provided. An image is received using an IR sensor, at least one region of interest (ROI) for measuring the HR is determined in the received image, and the HR is determined based on the at least one determined ROI.

Abstract: An ultrasound diagnosis apparatus includes an ultrasound transducer, an evaluation value acquisition unit, a determination unit, and an output unit. The evaluation value acquisition unit obtains an evaluation value for evaluating the function of tissue including a predetermined site based on biological information acquired for a predetermined period of time by the ultrasound transducer. The determination unit determines whether the function of the tissue is abnormal based on the evaluation value. The output unit outputs information based on a result of determination by the determination unit.

Abstract: The disclosure provides a heart rate monitor (HRM) circuit. The HRM circuit includes an analog front end (AFE). The AFE receives a Photoplethysmographic (PPG) signal, and generates a fine PPG signal. A motion cancellation circuit is coupled to the AFE, and receives the fine PPG signal and an accelerometer signal. The motion cancellation circuit subtracts the accelerometer signal from the fine PPG signal to generate a coarse heart rate. A peak detector is coupled to the motion cancellation circuit and the AFE, and generates an instantaneous heart rate. A filter is coupled to the peak detector, and generates an estimated heart rate from the instantaneous heart rate, the estimated heart rate is provided as a feedback to the peak detector.

Abstract: A photoplethysmogram system includes a plurality of sensors, each sensor capable of providing a sensor signal, and an adaptive filter capable of receiving a first input signal and computing an output. The photoplethysmogram system is capable of operating the filter in sequential stages, such that at each different stage the first input signal is a different sensor signal.

Abstract: A network is machine trained to estimate flow by spatial location based on input of anatomy information. A medical scan of tissue may be used to generate flow information without the delay or difficulty of performing a medical scan configured for flow imaging or CFD. Anatomy imaging is used to provide flow estimates with the speed provided by the machine-learned network.