A system and method from improving the image quality achievable with an ultrasound transducer by using a composite aperture for receiving ultrasound echoes. By using two receive cycles per vector, twice as many transducers may be used for receiving ultrasound imaging data than there are physical channels available in the ultrasound probe. An ultrasound probe utilizing a composite aperture can achieve high image quality from a system have reduced power, size, cost and complexity.

A system is provided for imaging an underwater environment. The system includes a transducer assembly with at least one transmit transducer element and an array of receive transducer elements. Each receive transducer element is configured to receive sonar returns and form sonar return data. A sonar signal processor is configured to receive the sonar return data from each receive transducer element and generate sonar image data. The sonar return data from all of the receive transducer elements may be summed and used to form a high-definition 1D (e.g., time-based) sonar image. The sonar return data from only a subgroup may be summed and used to form a lower-definition 1D sonar image. In some systems, an array of series-connected transmit transducer elements can be used. The orientation of the emitting faces of the array may vary slightly to mimic a curved surface for increased beam coverage.

An ultrasonic device includes a plurality of ultrasonic element arrays each of which is provided with a plurality of ultrasonic elements arranged in a first direction, in which the plurality of ultrasonic element arrays are disposed at positions which do not interfere with each other in the first direction, and are disposed at positions which are deviated relative to each other in a second direction intersecting the first direction.

Disclosed are systems, devices and methods for providing fingerprint sensors based on ultrasound imaging techniques in electronic devices and fabrication techniques for producing ultrasound-based fingerprint sensors. In some aspects, an ultrasound fingerprint sensor device includes an intermediate layer coupled to a base chip including an integrated circuit having conducive contacts at a surface of the base chip, the intermediate layer including an insulation layer formed on the base chip and a corresponding array of channeling electrode structures coupled to the conductive contacts and passing through the insulation layer, in which the channeling electrodes terminate at or above a top surface of the insulation layer to provide bottom electrodes; a plurality of ultrasonic transducer elements including an acoustic transducer material coupled to the bottom electrodes; and a plurality of top electrodes positioned on the ultrasonic transducer elements.

Presented herein is ultrasound visualization and associated systems and methods. In one embodiment, a method for an ultrasound imaging, includes: transmitting an imaging ultrasound toward a target tissue; receiving ultrasound echoes of the imaging ultrasound using a first set of receiving beamformer parameters; composing a first two-dimensional (2D) B-mode image of the target tissue based on received ultrasound echoes of the imaging ultrasound; transmitting a therapy ultrasound toward a target tissue by a therapy transducer using a second set of transmitting beamformer parameters; receiving ultrasound echoes of the therapy ultrasound using the first set of receiving beamformer parameters; composing a second 2D B-mode image of the target tissue based on received ultrasound echoes of the therapy ultrasound; and comparing the first 2D B-mode image of the target tissue with the second 2D B-mode image of the target tissue.

According to one embodiment, an ultrasonic probe includes a plurality of ultrasonic transducers, a first substrate, and a plurality of electronic circuit modules. The plurality of ultrasonic transducers equally spaced and aligned at least in one direction. The first substrate to which the ultrasonic transducers are coupled. The plurality of electronic circuit modules provided at predetermined intervals one the first substrate and coupled to the first

A percutaneously delivered medical device and its method of use includes a catheter, at least two electromagnetic sensing coils located within the distal tip of the catheter, and at least one within the proximal handle, and a multi-element planar ultrasound transducer array located within the distal tip of the catheter and configured to transmit and receive ultrasonic energy in at least two imaging modes. The device also includes an imaging system coupled to the ultrasound transducer and is used for creating an image of tissue in a first target plane that extends orthogonally from the catheter body. The medical device also includes a backscatter evaluation system for use in receiving and evaluating the acoustic spectral characteristics of tissues within a second target area within the first target plane.

Provided is a technique that implements harmonic imaging in an ultrasound diagnostic apparatus, being unaffected by the voltage-dependent distortion and nonlinear characteristics of the transmit system in the ultrasound diagnostic apparatus that incorporates the transmit amplifier, the ultrasound probe, and the like, facilitating adjustment of the transmit voltage, and achieving a frame rate substantially equivalent to that of the conventional PI method. In the amplitude modulation method that synthesizes the transmit acoustic fields, thereby eliminating a basic wave component of an acoustic wave and creating an image from nonlinear component echoes being extracted, one transmit and receive out of plural transmits and receptions to obtain one scanning line also serves as the transmit and receive for obtaining other scanning line. The echo signals obtained by the shared transmit and receive are used to form the receive beams respectively on both the scanning lines that share the transmit and receive.

The present technology relates generally to receiving arrays to measure a characteristic of an acoustic beam and associated systems and methods. The receiving arrays can include elongated elements having at least one dimension, such as a length, that is larger than a width of an emitted acoustic beam and another dimension, such as a width, that is smaller than half of a characteristic wavelength of an ultrasound wave. The elongated elements can be configured to capture waveform measurements of the beam based on a characteristic of the emitted acoustic beam as the acoustic beam crosses a plane of the array, such as a transverse plane. The methods include measuring at least one characteristic of an ultrasound source using an array-based acoustic holography system and defining a measured hologram at the array surface based, at least in part, on the waveform measurements. The measured hologram can be processed to reconstruct a characteristic of the ultrasound source. The ultrasound source can be calibrated and/or re-calibrated based on the characteristic.

Method for image acquisition in an ultrasonic biometric imaging device, the device comprising a plurality of ultrasonic transducers arranged at a periphery of a touch surface along one side of the touch surface, the method comprising: determining a target area of a touch surface; identifying a blocking feature preventing ultrasonic wave propagation in the touch surface such that the blocking feature creates a blocked region in the touch surface where image acquisition is not possible; determining that the target area at least partially overlaps the blocked region; dividing the transducers into a first subset and a second subset, the first and second subset being defined in that ultrasonic waves emitted by the respective subset reaches the target area on a first and second side of the blocking feature; and capturing an image of the biometric object using transmit and receive beamforming.