Abstract: Additive manufacturing, such as laser sintering or melting of additive layers, can produce parts rapidly at small volume and in a factory setting. To ensure the additive manufactured parts are of high quality, a real-time non-destructive evaluation (NDE) technique is required to detect defects while they are being manufactured. The present invention describes an in-situ (real-time) inspection unit that can be added to an existing additive manufacturing (AM) tool, such as an FDM (fused deposition modeling) machine, or a direct metal laser sintering (DMLS) machine, providing real-time information about the part quality, and detecting flaws as they occur. The information provided by this unit is used to a) qualify the part as it is being made, and b) to provide feedback to the AM tool for correction, or to stop the process if the part will not meet the quality, thus saving time, energy and reduce material loss.

Abstract: A light irradiation unit configured to irradiate a measurement part with a light beam that has a wavelength absorbed by glucose and a detection unit configured to detect a photoacoustic signal generated from the measurement part irradiated with the light beam emitted from the light irradiation unit are included. The light irradiation unit irradiates the measurement part by scanning the light beam 2-dimensionally. The measurement part is irradiated with the light beam through raster scanning. For example, the light beam has a beam diameter of about 100 ?m and is scanned at a scanning speed of about 100 ?m/10 ms.

Abstract: The present disclosure generally relates to systems and methods for imaging and sensing vibrations of an object. In one implementation, a system is provided for detecting vibrations that comprises a sensor with a plurality of pixels, each pixel including at least one photosensitive element. The sensor is configured to output signals related to illumination on each pixel. The system also includes at least one processor configured to receive the output signals from the sensor and detect, based on the output signals, one or more polarities. The at least one processor is also configured to determine timestamps associated with the output signals, analyze the timestamps and the polarities to detect vibrations of an object in the field of view of the sensor, and determine one or more frequencies of the detected vibrations.

Abstract: A method of tracking a known object is presented, wherein a sonar image of an object which is distorted by an artifact associated with sonar imaging is compared with an image generated from a model of the object, and at least one of the two images is modified to reduce differences between them.

Abstract: Systems and method are claimed for forming an artifact attenuated seismic image. The method includes obtaining an input seismic image, selecting a seismic partition from the input seismic image and determining a seismic dip for the seismic partition. The method further includes determining flattened seismic partition from the seismic partition based, at least in part, on the seismic dip, determining a filtered seismic partition from the flattened seismic partition, and determining an unflattened seismic segment based on the filtered seismic partition. The method still further includes determining the artifact attenuated seismic image based on the unflattened seismic segment. The system includes a seismic source, a plurality of seismic receivers for detecting and recording an observed seismic dataset generated by the radiated seismic wave; and a seismic processor configured form the artifact attenuated seismic image.

Abstract: The present invention describes device, method and system for providing treatment for swollen vascular structures located in a body canal of a patient. The device, method and system described in here provide an easy and, practical treatment and with minimal or without disturb to the patient, including RF emission driven directly and specifically over such vascular structure, and by means of ultrasound technology verify the position of the vascular structure and whether it is closed before, during and after the RF application. The present invention is situated in the field of medical science, more precisely in treatment of vascular structures, and medical devices.

Abstract: A dual frequency ultrasound transducer includes a high frequency (HF) transducer and a low frequency (LF) transducer that is positioned behind the high frequency transducer. An intermediate layer is positioned between the low frequency transducer and the high frequency transducer to absorb high frequency ultrasound signals. An alignment feature on the low frequency transducer is positioned with respect to a fiducial that is marked at a known position with respect to high frequency transducer elements of the HF transducer to align low frequency transducer elements of the LF transducer with the HF transducer elements.

Abstract: The present disclosure belongs to the technical field of seismic exploration imaging, and relates to an interpretive-guided velocity modeling seismic imaging method and system, a medium and a device. The method comprises the following steps: S1. performing first imaging on a given initial velocity model to obtain a first imaging result; S2. performing relative wave impedance inversion on the first imaging result to obtain a relative wave impedance profile; S3. performing Curvelet filtering on the relative wave impedance profile to obtain a first interpretation scheme; S4. superposing the first interpretation scheme and the initial velocity model to obtain a new migration velocity field; S5. performing second imaging on a new migration velocity field to obtain a second imaging result; and S6. repeating steps S2-S4 for the obtained second imaging result until a final seismic imaging result is obtained.

Abstract: A method and apparatus for marine surveying. A system includes: a standard-volume source element; a large-volume source element comprising an airgun having a volume greater than 1200 cubic inches; and a long-offset survey streamer. A method includes: towing a standard-volume source element; and towing a large-volume source element; activating the large-volume source element at large shotpoint intervals; and activating the standard-volume source element at standard shotpoint intervals, wherein the large shotpoint intervals are at least twice as long as the standard shotpoint intervals. A method includes: obtaining geophysical data for a subterranean formation; and processing the geophysical data to produce an image of the subterranean formation. A method includes: obtaining a firing plan for a plurality of seismic sources, wherein: a first seismic source of the plurality comprises a large-volume source element, and a second seismic source of the plurality consists of standard-volume source elements.

Abstract: A measurement terminal includes: a storage that stores, for each of one or more inspection objects, setting information including a parameter related to a feature of an inspection and an abnormality; a processor; and a memory having instructions that, when executed by the processor, cause the processor to perform operations. The operations include: acquiring audio data of sound from an inspection object; deriving, based on the setting information of a corresponding one of the one or more inspection objects, a required time for acquiring the audio data of sound from the inspection object to be used for determining a presence or absence of the abnormality in the inspection object; and determining the presence or absence of the abnormality in the inspection object based on the audio data of sound from the inspection object for the derived required time.

Abstract: Methods and systems described herein are directed to determining properties of a subterranean formation using an acoustic wave-equation with a novel formulation in terms of a velocity model and a reflectivity model of the subterranean formation. The acoustic wave equation may be used with full-waveform inversion to build high-resolution velocity and reflectivity models of a subterranean formation. The acoustic wave equation may be also used with least-squares reverse time migration in the image and space domains, to build a reflectivity model of the subterranean formation with enhanced resolution and amplitude fidelity. The velocity and reflectivity models of materials that form the subterranean formation reveal the structure and lithology of features of the subterranean formation and may reveal the presence of oil and natural gas reservoirs.

Abstract: A method for seismic processing includes steps of seismic signal forward propagation and seismic data back propagation. The subsurface medium image is created after correlating and summarizing forward and backward propagation results. To address migration footprint and noise due to the incomplete data acquisition aperture and migration approximation in the migration operator, the iteration inversion strategy incorporates tensor flow calculated from seismic image. A regularization operator based on structure tensor of image is applied to seismic image inversion.

Abstract: An apparatus for artificial intelligence (AI) bathymetry is disclosed. The apparatus includes a sonic unit attached to a boat, the sonic unit configured to generate a plurality of metric data as a function of a plurality of ultrasonic pulses and a plurality of return pulses. An image processing module is configured to generate a bathymetric image as a function of the plurality of metric data, identify, as a function of the bathymetric image, an underwater landmark, and register the bathymetric image to a map location as a function of the underwater landmark. A communication module is configured to transmit the registered bathymetric image to at least a remote device. An autonomous navigation module is configured to determine a heading for the boat as a function of a path datum and command boat control to navigate the boat as a function of the heading.

Abstract: The invention relates to a matrix array of ultrasonic transducer elements comprising a plurality of transducer elements that are distributed over a distribution area, each of the transducer elements being suitable for emitting, from an emission surface, ultrasound at a frequency comprised between 100 kHz and 100 MHz, wherein: each of the transducer elements is configured to emit ultrasound divergently at least level with the working volume; the largest dimension of the emission area of each of said transducer elements is larger than 1.5 times the wavelength of the ultrasound in water at 30° C.; and the distribution of the transducer elements over the distribution area of the array is aperiodic.

Abstract: An ultrasound imaging system (102) includes a transducer array (108) with a two-dimensional array of rows (110) of transducer elements (114). The transducer elements of each row extend along a long axis (116). The rows are parallel to each other. The transducer array includes a non-rectangular set of active transducer elements. The ultrasound imaging system further includes transmit circuitry (118) that actuates the transducer elements to transmit an ultrasound signal. The ultrasound imaging system further includes receive circuitry (120) that receives echoes produced in response to an interaction between the ultrasound signal and a structure and received by the transducer elements. The ultrasound imaging system further includes a beamformer that processes the echoes and generates one or more scan lines indicative of the structure.

Abstract: This disclosure describes presence-detection devices that detect movement of a person by emitting ultrasonic signals into an environment, and characterizing the change in the frequency, or the Doppler shift, of the reflections of the ultrasonic signals off the person caused by the movement of the person. The techniques include downsampling the audio signals from the carrier frequency range down to a frequency range with a center frequency around 0 Hz. A filter is applied to attenuate signals around 0 Hz and below (or above), such as the emitted signals. In addition to removing the emitted signals, the negative side (or positive side) of the audio signals are removed, but the Doppler shift is still represented in the remaining portion of the audio signals. By removing a portion of the audio signals, the amount of processing required to detect the Doppler shift in the reflections of the ultrasonic signals is reduced.

Abstract: An analog store-digital read (ASDR) ultrasound beamformer architecture performs the task of signal beamforming using a matrix of sample/hold cells to capture, store and process instantaneous samples of analog signals from ultrasound array elements and this architecture provides significant reduction in power consumption and the size of the diagnostic ultrasound imaging system such that the hardware build upon ASDR ultrasound beamformer architecture can be placed in one or few application specific integrated chips (ASIC) positioned next to the ultrasound array and the whole diagnostic ultrasound imaging system could fit in the handle of the ultrasonic probe while preserving most of the functionality of a cart-based system. The ASDR architecture provides improved signal-to-noise ratio and is scalable.

Abstract: The disclosure relates to a method of determining at least a property of a material situated behind a casing of a borehole, wherein an image of a imaging parameter of the material, such as acoustic impedance, has been obtained. The method comprising identifying zones of the image corresponding to disturbance zones, based in particular on values of the imaging parameters or other measured parameters, deleting the data of the imaging parameter in each of the disturbance zones, reconstructing for each zone, data of the imaging parameter from the data of imaging parameter at the neighboring zones, and determining at least a property of the material based on the reconstructed image.

Abstract: A method for estimating the depth-domain seismic wavelets from depth-domain seismic data and synthesizing depth-domain seismic records. The method includes: obtaining depth coordinates and P-wave velocity v and density from well log, calculating a corresponding reflectivity series r; performing constant-velocity depth conversion for a seismic trace S and a reflectivity series r by using a velocity vc as a reference velocity to obtain the converted seismic trace S1 and the converted reflectivity series r1; and estimating a depth-domain seismic wavelet w based on the Gibbs sampling method; synthesizing depth-domain seismic record by using the P-wave v, the reflectivity series r and the estimated depth-domain seismic wavelet w.

Abstract: Time of Flight (ToF) image processing methods include collecting correlation samples to calculate a phase estimate. Systems and methods are provided for collecting correlation samples from multiple pixels. An image processing system for continuous waves includes a light source configured to emit light, an image sensor having a plurality of pixels, and a processor configured to collect correlation samples from a subset of the plurality of pixels in the image sensor.

Abstract: An internal structure detection system includes: two kinds of sensors with different operating principles for receiving reflected waves of vibration applied to an inspection target in an investigation area; and a processing apparatus that detects an internal structure of the inspection target by using the sensor data received by the two kinds of sensors. The two kinds of sensors are deployed in the investigation area with different densities, in a distributed manner.

Abstract: An electronic system is disclosed comprising of a drill tool which is mounted on a mechanical system with either a position and angular sensor assisted guidance of the camera itself around the drill tool in a guided trajectory as in a robotic arm or mobile device on the field with the drill tool pulled out from the wellbore or when the tool can be imaged while in operation; multiple fixed cameras on a test or working rig coupled with rotary control of the drill tool, and a controller capable of controlling the drill string motor and imaging. The system automatically profiles the degraded/worn out drill tool, when the drill string-drill tool is visually available or pulled out, by executing a host of machine vision engineering based and machine intelligence/data analytics engineering algorithms, where the algorithms can calculate and provide detailed current/predictive and prescriptive analysis of the drilling tool.

Abstract: A sensor (1) including at least one array (10), including a plurality of acoustic transducers (12); a controller (42) for controlling each transducer (12) to be selectively in a generation mode for generating an analysis signal, or a reception mode for receiving an analysis signal, and, for controlling the sensor (1) to perform scans of the at least one array (10), each scan having a plurality of scan steps, such that, during each scan step, at least one transducer (12) is in the generation mode and at least one other transducer (12) is in the reception mode; and, a processor (44) for processing one or more signals receivable from one or more of the controller (42), a transducer (12) in generation mode and a transducer (12) in reception mode to determine at least one characteristic from the one or more signals.

Abstract: A dual frequency ultrasound transducer includes a high frequency (HF) transducer and a low frequency (LF) transducer that is positioned behind the high frequency transducer. An intermediate layer is positioned between the low frequency transducer and the high frequency transducer to absorb high frequency ultrasound signals. An alignment feature on the low frequency transducer is positioned with respect to a fiducial that is marked at a known position with respect to high frequency transducer elements of the HF transducer to align low frequency transducer elements of the LF transducer with the HF transducer elements.

Abstract: Provided herein are the systems, methods, components for a three-dimensional tomography system. The system is a dual-modality imaging system that incorporates a laser ultrasonic system and a laser optoacoustic system. The dual-modality imaging system generates tomographic images of a volume of interest in a subject body based on speed of sound, ultrasound attenuation and/or ultrasound backscattering and for generating optoacoustic tomographic images of distribution of the optical absorption coefficient in the subject body based on absorbed optical energy density or various quantitative parameters derivable therefrom. Also provided is a method for increasing contrast, resolution and accuracy of quantitative information obtained within a subject utilizing the dual-modality imaging system.

Abstract: A method for computing a tissue reflectivity function (TRF) is provided. This method comprises accessing radio-frequency (RF) data and computing a point spread function (PSF), to obtain the TRF. The RF data accessed are data obtained by beamforming time signals from an array of transducers of an ultrasound device. Next, for each pair (r, s) of given pairs of points in the imaging plane, the PSF is computed as a sum of contributions from at least some of the transducers. Each contribution is computed by evaluating a transducer's transfer function, based on two outputs of a respective time-of-flight function. Such outputs are obtained by evaluating the time-of-flight function at a first point r and at a second point s of each pair, respectively. Finally, the RF function can be deconvoluted, based on the computed PSF, so as to obtain the TRF.

Abstract: A synthetic aperture sonar moving along a first axis comprises an emitting device configured to emit, in each ping, at least one acoustic pulse toward an observed zone in a set of sectors comprising at least one sector. The sonar comprises a first physical receiving antenna extending along the first axis allowing measurements of backscattered signals to be acquired and a processing device configured to form, over R pings, for each sector, synthetic aperture beams from measurements of signals backscattered by the observed zone and generated by acoustic pulses emitted in the sector. The sonar comprises at least one gyrometer. The processing device is configured to correct for variations in the movement of the first receiving antenna during the formation of the synthetic aperture beams of the set of sectors by carrying out an autocalibration by intercorrelation of the successive pings.

Abstract: An ultrasound apparatus includes transducers, switches, a pulser, receiver, and processing unit, each transducer connected to the pulser and receiver via one switch and a single communications channel; the processing unit includes a memory and processor, is connected to the pulser and receiver, and identifies a first number that indicates a first aperture size, generates responses from the transducers, and processes the responses to produce image data; and the processor generates each response by selecting contiguous or non-contiguous transducers, the number being equal to the first number, for each switch connected to a selected transducer, sending a signal instructing the switch to connect the transducer to the communications channel, sending instructions to simultaneously fire selected transducers, with a pulse provided simultaneously to each selected transducer via the communications channel, and receiving a single response via the communications channel and receiver, which is the combination of outputs o

Abstract: Without using any approximated wave front propagation model, appropriate delay times are set for received signals to obtain phased signals for both the inside and outside of irradiation area of transmission beam. A reception beamformer comprises a wave front propagation calculator 121 that obtains times until ultrasonic waves transmitted from a plurality of ultrasonic transducers arrive at a reception focus by calculation, and a delay time extractor 122 that calculates delay times for the reception focus on the basis of distribution of the arrival times of the ultrasonic waves for each of the plurality of the ultrasonic transducers obtained by the wave front propagation calculator 121. Therefore, even if the wave front that arrives at the reception focus has a complicated shape, it is not necessary to approximate the wave front, and phasing addition can be performed with appropriate delay times obtained from times until the ultrasonic waves arrive at the reception focus.

Abstract: A method for determining a parameter of a material of interest which includes: directing, using a radio frequency (RF) source, RF energy into a region of interest, the region of interest comprising the material, a known reference and a boundary between the material and the known reference; detecting, using an acoustic receiver, at least one thermoacoustic multi-polar signal generated in response to the RF energy; and determining, by the one or more processors, a parameter of the material as a function of the at least one thermoacoustic multi-polar signal and a transmitted power correction factor, wherein the transmitted power correction factor is based on an estimated thickness of the known reference and an attenuation coefficient of the known reference.

Abstract: Techniques are disclosed for systems and methods for sensor fusion with respect to mobile structures. A mobile structure may include multiple ranging sensor systems and/or receive navigational data from various sensors. A navigational database may be generated that includes data from the ranging sensor systems and/or other sensors. Aspects of the navigational database may then be used to generate an integrated model, which can be used to generally aid in the navigation of the mobile structure.

Abstract: A lidar system includes one or more light sources configured to emit light pulses, a scanner configured to direct the emitted light pulses as beams along one or more scan directions to illuminate, for each orientation of the scanner with each of the plurality of beams, a respective light-source field of view corresponding to a respective pixel, and a receiver configured to detect the light pulses scattered by one or more remote targets. The receiver includes a first, second, and third detectors to detect light pulses associated with respective beams. Each detector has a separate detector field of view within which the detector receives scattered light. A spatial separation between the first detector and the second detector is greater than a spatial separation between the second detector and the third detector.

Abstract: The disclosure relates to a method for determining and/or monitoring the breakdown voltage of a transformer oil, comprising the steps of a) performing an acoustic impedance measurement of the transformer oil, the impedance of a medium partially or entirely disposed in the transformer oil and capable of naturally vibrating and/or transmitting vibrations to the transformer oil is determined in at least one frequency band of defined frequency width; and b) calculating a resonator quality factor for the frequency band based on the determination performed in step a); and c) calculating an acoustic disbalance of the transformer oil based on the calculation performed in step b); and d) ascertaining the breakdown voltage of the transformer oil based on the calculation performed in step c). Furthermore, the disclosure relates to a device (100, 200) for determining and/or monitoring the breakdown voltage of a transformer oil.

Abstract: Systems and methods are described for correcting distorted images captured of underwater environments. Caustics are used to provide additional illumination to underwater objects, and lenslets from ocean wave fluid lensing are used to magnify a benthic scene for enhancing the effective resolution of the images. The process introduces a fluid distortion characterization methodology, caustic bathymetry concepts, fluid lensing lenslet homography technique, two dimensional image reconstruction process, and three dimensional airborne fluid lensing process for characterizing the aquatic surface wave field, modelling bathymetry using caustic phenomena, and robust high-resolution aquatic remote sensing.

Abstract: A laser scanner having a rotor that is rotatably held on a housing which in turn is rotatable about an axis of rotation, wherein a lens system is arranged in the rotor in order to direct a measuring beam emitted by a transmitter onto a measurement object or to direct a beam reflected by the measurement object onto a detector, wherein a camera for acquiring image information of the measurement object is arranged in the rotor. Also, a lighting unit, by which an image field of the camera can be illuminated depending on a camera position.

Abstract: A system for detecting objects using ultrasonic waves and methods for making and using the same are provided. The object detection system uniquely encodes each of a plurality of ultrasonic waves and transmit each of the uniquely-encoded ultrasonic waves in a respective direction. The object detection system then receives any of the emitted uniquely-encoded ultrasonic waves that are reflected from an object. By decoding the reflected ultrasonic waves, the object detection system distinguishes among the uniquely-encoded ultrasonic waves and detect the existence and location of the object.

Abstract: To provide a technique of obtaining the reflection characteristics of an object, which can reproduce the appearance of the object more correctly, an information processing apparatus obtains a plurality of measurement values by receiving, from each of a plurality of directions, reflected light from an object illuminated by light from a given direction, and derives, based on the plurality of measurement values, a characteristic of specular reflection light as a reflected light component in a specular reflection direction corresponding to the given direction with respect to a surface of the object, a characteristic of internal diffuse reflection light as a reflected light component after scattering and absorption in the object, and a characteristic of surface diffuse reflection light as a reflected light component which has been diffused on the surface of the object.

Abstract: A method and an apparatus, and a storage medium are provided for controlling a fingerprint sensor in the field of fingerprint identification. The method may include: after an instruction for adjusting a sensitivity of the fingerprint sensor is received, displaying a page for adjusting the sensitivity, in which, at least two different optional sensitivities of a target fingerprint detection module in the fingerprint sensor are displayed on the page; receiving an instruction for selecting the sensitivity, in which, the instruction for selecting the sensitivity includes a target value selected by a user from the at least two different optional sensitivities; and setting a sensitivity of the target fingerprint detection module as the target value.

Abstract: An ultrasonic imaging apparatus includes a plurality of transducers aligned in an array, a select circuit configured to cause transducers selected from the plurality of transducers to transmit an ultrasonic pulse and receive received signals, respectively, and a digital signal processing circuit configured to perform a first operation of adding up an odd number of the received signals, arranged in an order corresponding to the aligned array, with delays that are symmetrical between two sides across a center that is a centrally located signal, and to perform a second operation of adding up an even number of the received signals, arranged in an order corresponding to the aligned array, with delays that are symmetrical between two sides across a center that is situated between two centrally located signals.

Abstract: A method performed by an ultrasonic inspection system includes delivering to a multilayer structure an ultrasonic pulse that sweeps through a chirp bandwidth, and receiving from the multilayer structure ultrasonic energy including a series of time-overlapping reflections of the pulse delivered to the multilayer structure from layers of the multilayer structure. The method also includes performing frequency domain processing on the ultrasonic energy to produce frequency resonance peaks respectively indicative of distinct layers of the multilayer structure, and performing time domain processing on the ultrasonic energy to compress the time-overlapping reflections into respective time-separated reflection time peaks. The method also includes displaying the frequency resonance peaks on a frequency domain plot, and displaying the reflection time peaks on a time domain plot.

Abstract: A test for screening defects of a transmission/reception circuit in an IC is enabled at low cost, without withstand voltage violation, and without carrying out electrical contacts with many terminals connected to oscillators. In a transmission/reception separation switch circuit using transistors as switch elements, a potential of a gate is lowered in a test more than the potential in a case of reception to avoid gate-source withstand-voltage violation when a large-amplitude signal is input, and an internal-signal loopback test is carried out without destroying a reception circuit.

Abstract: An ultrasonic imaging apparatus and a method for controlling the same are disclosed. The ultrasonic imaging apparatus includes: a user interface to receive an input signal of a user and a power-supply unit. The power-supply unit includes a plurality of power-supply groups to provide power-supply signals for respectively driving a plurality of elements, and a power-supply processor to search for power data corresponding to the received input signal from among predetermined power data and to adjust power-supply signals applied to respective elements corresponding to the plurality of power-supply groups according to the searched power data.

Abstract: An ultrasound transducer element including a cell group constituted by a plurality of ultrasound transducer cells, wherein each of the plurality of ultrasound transducer cells includes a lower electrode arranged on a substrate, a membrane including an upper electrode arranged facing the lower electrode with a cavity positioned therebetween, and a plurality of pillars forming the cavity by supporting the membrane, and each cavity mutually communicates with one another.

Abstract: Computing device, computer instructions and method for correcting an image, of a surveyed surface, due to a free-surface reflection. The method includes calculating a free surface reflection operator for a seismic source displaced in water based on a position of the source, and an air-water interface datum; receiving recorded seismic data d recorded with seismic sensors (r), wherein the recorded seismic data is associated with a pressure and/or a particle motion produced by a seismic wave in earth; correcting the recorded seismic data d based on the free surface reflection operator to obtain transformed seismic data; and generating an image of the surveyed subsurface, based on the transformed seismic data, wherein the image is indicative of various layers of the earth. The free surface reflection operator varies while a source signal is being emitted by the source.

Abstract: Computing device, computer instructions and method for calculating an image of a subsurface based on least square migration and image de-convolution using a matching operator F. The method includes receiving seismic data d; computing a first image m of the subsurface based on the seismic data d; computing a second image h of the subsurface based on the first image m; applying a transform operation to the first and second images m and h to obtain a first transform of the first image and a second transform of the second image; calculating the matching operator F by matching the first transform of the first image to the second transform of the second image; and generating an updated image mupdated of the subsurface based on the matching operator F and the first transform of the first image.

Abstract: A system and method for determining fractional fat content of tissue comprises registering thermoacoustic image coordinates to an acquired ultrasound image, the acquired ultrasound image at least comprising target tissue within a region of interest; defining a thermoacoustic voxel grid coincident with the region of interest; obtaining thermoacoustic image measurement values from tissue within the region of interest corresponding to the voxels within the defined thermoecoustic voxel grid to yield a thermoacoustic measurement matrix; normalizing the thermoacoustic image measurement values within the thermoacoustic measurement matrix; calculating a fractional fat content map for the target tissue within the region of interest based on the normalized thermoacoustic image measurement values within the thermoacoustic measurement matrix and a reference thermoacoustic measurement value; and correcting the fractional fat content map based on tissue speed-of-sound data to yield a final fractional fat content map for th

Abstract: Devices are disclosed for obtaining data of a sample, particularly data capable of being processed to produce an image of a region of the sample. An exemplary device includes a light-beam source, an acoustic-wave source, an optical element, and an acoustic detector. The optical element is transmissive to a light beam produced by the light-beam source and reflective to acoustic waves produced by the acoustic-wave source. The optical element is situated to direct the transmitted light beam and reflected acoustic wave simultaneously along an optical axis to be incident at a situs in or on a sample to cause the sample to produce acoustic echoes from the incident acoustic waves while also producing photoacoustic waves from the incident light beam photoacoustically interacting with the situs. The acoustic detector is placed to receive and detect the acoustic echoes and the photoacoustic waves from the situs. The acoustic detector can comprise one or more hydrophones exploiting the acousto-electric effect.

Abstract: A method includes receiving, at a console (132) of an ultrasound imaging system (102), a first signal indicative of actuation of a touch control (128) of a touch screen user interface (122) of the ultrasound imaging system, wherein the touch control is one of a plurality of different touch controls of the ultrasound imaging system. The method further includes identifying, with a processor of the ultrasound imaging system, the touch control from the plurality of different touch controls based on the first signal. The method further includes identifying, with the processor of the ultrasound imaging system, a graphic representation of the touch control based on the identification of the touch control. The method further includes visually displaying, with the processor of the ultrasound imaging system, the graphic representation on a display monitor concurrently with displaying an image.

Abstract: Disclosed herein are techniques for generating an image of a target object using a sensor. The sensor includes a substrate and a single transceiver. The transceiver includes a first electrode, a second electrode, and a layer of electrical material positioned between the two electrodes. The transceiver also includes a control unit configured to switch the transceiver into a transmit mode or a receive mode. The transceiver further includes a receiving circuit configured to receive, store, and output a detection signal caused by an interaction between the sensor and the target object. The second electrode, the control unit, and the receiving circuit can be formed on the substrate.

Abstract: An ultrasonic device includes an element substrate and a wiring substrate. The element substrate includes an ultrasonic element and an element interconnect terminal connected to the ultrasonic element. The wiring substrate includes a wiring terminal and an opening portion that defines an opening extending through the wiring substrate. The element interconnect terminal and the wiring terminal are connected so as to oppose each other. The opening portion encloses the ultrasonic element in plan view as seen from a thickness direction of the wiring substrate.