Abstract: An intelligent monitoring system for pelvic fracture reduction, comprising a sample fracture model database, a patient pelvic fracture data acquisition unit, a reduction situation monitoring unit and a mixed reality data fusion processing unit, the sample fracture model database stores a plurality of sample fracture models, the patient pelvic fracture data acquisition unit uses magnetic navigation and positioning technology to collect patient pelvic location information data in real-time and upload it to the mixed reality data fusion processing unit, the mixed reality data fusion processing unit automatically invokes the sample fracture model in the sample fracture model database corresponding to patient pelvic fracture condition and matches the patient pelvic location information data with the sample fracture model using mixed reality technology to form an intelligent fracture model for the patient's pelvic fracture state, the reduction situation monitoring unit loads and displays images of the intelligent f

Abstract: A photoacoustic apparatus according to the present invention is a photoacoustic apparatus for obtaining image data based on an acoustic wave generated by irradiating an object with light of a first wavelength and light of a second wavelength which is different from the first wavelength, the photoacoustic apparatus including a processing unit configured to: obtain a first image data group corresponding to the first wavelength generated based on an acoustic wave generated by irradiating the object with light of the first wavelength a plurality of times, obtain first positional deviation information corresponding to an irradiation timing with the light of the first wavelength on the basis of a first image data group corresponding to the first wavelength, and obtain second positional deviation information corresponding to an irradiation timing with the light of the second wavelength on the basis of the first positional deviation information.

Abstract: This application disclosures a method and system for detecting a centerline of a vessel. The method may include obtaining image data, wherein the image data may include vessel data; selecting two endpoints of the vessel based on the vessel data; transforming the image data to generate a transformed image based on at least one image transformation function; and determining a path of the centerline of the vessel connecting the first endpoint of the vessel and the second endpoint of the vessel to obtain the centerline of the vessel based on the transformed image. The two endpoints of the vessel may include a first endpoint of the vessel and a second endpoint of the vessel.

Abstract: A signal conversion circuit, a heart rate sensor, and an electronic device are provided, and the signal conversion circuit includes: a photoelectric conversion circuit, configured to convert an optical signal into a current signal; a differential signal conversion circuit, connected to the photoelectric conversion circuit, and configured to convert the current signal into a first differential signal and a second differential signal, where the first differential signal is an integration signal of the current signal in a first phase, and the second differential signal is an integration signal of the current signal in a second phase; and a subtraction amplifier, connected to the differential signal conversion circuit, and configured to amplify a difference value between the first differential signal and the second differential signal, to generate a third differential signal. The signal conversion circuit of embodiments of the present disclosure can effectively suppress ambient interference.

Abstract: Periodic displacement occurs in body tissue due to heartbeat. A peak level D of the movement distance of the body tissue is detected (Step 21), and a heartbeat cycle T is calculated from a frequency spectrum (Steps 22 and 23). By dividing twice the peak level D by the heartbeat cycle T, the moving velocity of the body tissue in a unit heartbeat cycle is calculated (Step 24). By dividing the moving velocity by a frame rate r, an average movement distance of the body tissue between frames is calculated (Step 25). In a case where the average movement distance is smaller than a predetermined threshold value, a time interval between the frames used for the calculation of the movement distance is extended (being Step 26 NO, Step 27).

Abstract: A system and method for efficiently transmitting and receiving focused ultrasound through a medium, such as bone, is provided. The focal region of the focused ultrasound is iteratively updated to provide an improved focus through the medium. This method may be carried out using a transducer assembly that includes two or more transmit arrays each operating at a different frequency. An initial focus is set and updated by delivering focused ultrasound with a lower frequency transmit array. The phase corrections determined in the first iteration are applied to subsequently higher frequency transmit arrays and received signals, and the process repeated until a desired focus or image resolution is achieved.

Abstract: An medical device, comprising an elongate shaft extending along a shaft longitudinal axis and comprising a shaft proximal portion and a shaft distal portion that is sized and configured for insertion into a body. An active magnetic position sensor can be disposed within the shaft distal portion.

Abstract: Methods, apparatuses, and systems relating to image guided interventions on dynamic tissue. One embodiment is a method that includes creating a dataset that includes images, one of the images depicting a non-tissue internal reference marker, being linked to non-tissue internal reference marker positional information, and being at least 2-dimensional. Another embodiment is a method that includes receiving a position of an instrument reference marker coupled to an instrument; transforming the position into image space using a position of a non-tissue internal reference marker implanted in a patient; and superimposing a representation of the instrument on an image in which the non-tissue internal reference marker appears. Computer readable media that include machine readable instructions for carrying out the steps of the disclosed methods. Apparatuses, such as integrated circuits, configured to carry out the steps of the disclosed methods.

Abstract: The simulator includes a chemical liquid information acquisition section configured to acquire an amount of contrast medium, a target value acquisition section configured to acquire a target duration for which a target pixel value is maintained, a protocol acquisition section configured to acquire a contrast medium injection protocol, and a prediction section for determining a predicted duration, the prediction section configured to simulate the time-dependent change in the pixel value in the tissue of the subject based on the injection protocol and the amount of the contrast medium, and the prediction section compares the predicted duration with the target duration to re-simulate, in a case where the predicted duration is shorter than the target duration, the time-dependent change in a condition where a greater amount of the contrast medium than the amount of the contrast medium used in the simulation is injected to redetermine the predicted duration, and in a case where the predicted duration is longer than

Abstract: There is provided a new apparatus, system, and method of use for laser speckle imaging that allows for omni-directional viewing. The omni-directional viewing can include a reflector and switches configured for switching the illumination on the luminal tissue such that the light reflected from the luminal tissue at any given time is reflected from one or more substantially non-overlapping sections of a luminal tissue. This apparatus may be particularly useful for tissue analysis such as analysis of vulnerable plaque.

Abstract: A method of processing signals from an accelerated MRI scan of a dynamic event occurring in the body of a human patient. The patient is subjected to an MRI examination which includes the relevant portion of his body. Those voxels for which there is no substantially no change over the time of the scan are identified and subtracted from the overall scan signal.

Abstract: A method for measuring an intracranial bioimpedance in a patient's head, to help evaluate cerebral autoregulation, may involve securing a volumetric integral phase-shift spectroscopy (VIPS) device to the patient's head, measuring the intracranial bioimpedance with the VIPS device by measuring a phase shift between a magnetic field transmitted from a transmitter on one side of a VIPS device and a magnetic field received at a receiver on another side of the VIPS device, at one or more frequencies, and evaluating cerebral autoregulation in the intracranial bioimpedance, using a processor in the VIPS device.

Abstract: An imaging method for obtaining a human skeleton, comprising the following steps: S1. determining a target region and fixing an object to be scanned; S2. determining an imaging region; S3. scanning the target region to obtain a series of section images that record spatial position coordinates and scanning angle of the imaging probe; S4. determining the position of bones in a three-dimensional space according to the features reflected on the surfaces of the bones in the section images and the spatial position coordinates and scanning angle of the imaging probe, and obtaining position information of the bones; S6. continuously scanning the target region till the position information and section images of the bones in the skeleton in the entire target region are completely collected; and S7. displaying the skeleton in the three-dimensional space. By means of the method, the human skeleton structure can be obtained without radiation.

Abstract: An ultrasonography apparatus includes transmitting circuitry, and processing circuitry. The transmitting circuitry configured to cause an ultrasound probe to transmit a displacement-generation ultrasonic wave to cause a displacement in a tissue of a living body, and cause the probe to transmit an observation ultrasonic wave to observe a displacement of a tissue of a living body in a predetermined scan region, the displacement caused based on the displacement-generation ultrasonic wave. The processing circuitry configured to accept a setting instruction that corresponds to the region, and that is related to an acquisition frequency of an image based on a reflected wave signal that is acquired by the probe by transmission and reception of the observation ultrasonic wave, determine a transmission condition for at least one of the displacement-generation ultrasonic wave and the observation ultrasonic wave, according to the setting instruction, and control the transmission circuitry based on the condition.

Abstract: A multimodal intravascular analysis uses a structural intravascular analysis modality to compensate for a chemical analysis modality. Examples of structural analysis are IVUS, OCT, including optical coherence domain Reflectometry (OCDR) and optical frequency domain imaging (OFDI), and/or sonar rangefinding. Examples of chemical or functional analysis are optical, NIR, Raman, fluorescence and spectroscopy, thermography and reflectometry. In one example, the structural analysis is used to characterize the environment structurally, such as catheter head-vessel wall distance. This information is then used to select from two or more algorithms which are depth specific (e.g. shallow vs. deep), to achieve improved accuracy in the chemical or functional analysis.

Abstract: A method and system for enhancing radio frequency energy delivery to a tissue region of interest. The method and system direct with a radio frequency (RF) applicator, one or more RF energy pulses into the tissue region of interest, the tissue region of interest comprising an object of interest and at least one reference that are separated by at least one boundary; detect with an acoustic receiver, at least one bipolar acoustic signal generated in the tissue region of interest in response to the RF energy pulses and processing the at least one bipolar acoustic signal to determine a peak-to-peak amplitude thereof; adjust the RF applicator to maximize the peak-to-peak amplitude of bipolar acoustic signals generated in the tissue region of interest in response to RF energy pulses generated by the adjusted RF applicator; and direct with the adjusted RF applicator, one or more RF energy pulses into the region of interest.

Abstract: According to an aspect, there is provided an apparatus for measuring the blood pressure, BP, of a user, the apparatus comprising a volume-clamp BP monitoring device that comprises a first pressure device for applying pressure to a first part of the body of the user, a first photoplethysmogram, PPG, sensor for obtaining a first PPG signal from the first part of the body of the user, and a control unit that is configured to analyse the first PPG signal and to control the pressure of the first pressure device; wherein the control unit is configured to adjust the pressure of the first pressure device to maintain the first PPG signal at a constant level and to determine the BP of the user from the pressure of the first pressure device; and a second sensor, separate from the first PPG sensor, for measuring a physiological characteristic of the user in a second part of the body of the user, wherein the second part of the body is separate from the first part of the body; wherein the apparatus is configured to analyse

Abstract: An apparatus for measuring photoplethysmogram includes a ring structure with at least one photon source and at least one photon detector positioned on an inner surface of the ring structure. The apparatus further includes a controller configured to measure a preliminary photoplethysmogram during a first time period by taking a first number of samples, determine a form factor from the preliminary photoplethysmogram, determine an inter beat interval from the preliminary photoplethysmogram, and use the form factor and the inter beat interval to determine a second number of samples to be taken during a second time period of measurement of the photoplethysmogram and the distribution of the samples to be taken in function of time.

Abstract: Disclosed herein are various systems and methods for an improved minimally invasive surgical tracking system. As disclosed herein, a computer assisted surgical system (CASS) may include an internal tracking device that obtains relative locational data of one or more surgical tools not trackable via a global tracking system. The internal tracking device having an external portion that is trackable global tracking system. Based on the known characteristics and location of the internal tracking device the CASS determines the location of the one or more surgical tools relative to the patient and other objects in the operating room.

Abstract: An ultrasound device, including (i) an ultrasound transducer, and (ii) a coupling material in contact with the ultrasound transducer is presented. The coupling material can comprise a solid component and a liquid component, wherein the liquid component is absorbed within the solid component and forms a microscopic liquid layer on a surface of the solid component, through which acoustic energy from the ultrasound transducer can be conducted. The device can be mounted to an external body surface proximate to a portion of the lumen, allowing the device to measure the rate at which a component moves through the lumen. Also provided are methods for making the device and using the device to determine a physiological parameter based on at least the flow rate of a component through the lumen.