Systems and methods for network-based ultrasound imaging are provided, which can include a number of features. In some embodiments, an ultrasound imaging system images an object with three-dimensional unfocused pings and obtains digital sample sets from a plurality of receiver elements. A sub-set of the digital sample sets can be electronically transferred to a remote server, where the sub-set can be beamformed to produce a series of two-dimensional image frames. A video stream made up of the series of two-dimensional images frames can then be transferred from the remote server to a display device.

A system and method for capturing ultrasound signals from a hemispheric imaging region (e.g., by a stationary array of transducer elements arranged in the shape of a faceted hemisphere) and estimating scattering measurements that would be made by a virtual array in the opposite hemisphere (e.g., by a network of processors that receive and process the transmitted ultrasound signals in parallel) by forming an initial estimate of a medium variation for each of a plurality of subvolumes in the scattering object to form an estimated object, calculating residual scattering by using a difference between a scattering response calculated for the estimated object and measured ultrasound signals received from the scattering object, forming an initial three-dimensional image of the scattering object, and extrapolating a difference between the scattering response calculated for the estimated object and the measured ultrasound signals received from the scattering object.

Multifunctional ultrasound systems and methods for body section registration and mapping of microbubble dynamics. A system is provided that includes one or more micromachined ultrasonic transducer arrays (MUTAs) configured to capture a high-resolution image of at least a portion of a body section using ultrasound and monitor microbubble activity during ultrasound treatment. The system includes an image registration module configured to spatially register the high-resolution image with a reference image. The system includes electronics configured to control one or more of drive signal amplitude, frequency filtering, multiplexing, and DC bias voltage. The system can be configured to control ultrasound treatment based on the monitoring of the microbubble activity during treatment.

According to examples, systems, devices, and methods for detecting rapid eye movement (REM) are described. The device may include an array of ultrasound sensors oriented to emit transmit ultrasounds signals in an eyeward direction, wherein the ultrasound sensors are to receive a return signal of the transmit signal reflecting off of a target, and wherein the ultrasound sensors are to output a distance signal representative of a distance to a target, the distance signal generated based on the return signal, and a transceiver to receive the distance signals, wherein the transceiver is to transmit the distance signals from the array of ultrasound sensors to a remote device.

An ultrasound imaging device includes a plurality of ultrasound transducers arranged in an array of rows and columns. Each of the transducers has a first electrode and a second electrode. The first electrodes of the transducers of a same row are interconnected and the second electrodes of the transducers of a same column are interconnected.

Techniques, systems, and devices are disclosed for synthetic aperture ultrasound imaging using a beamformer that incorporates a model of the object. In some aspects, a system includes an array of transducers to transmit and/or receive acoustic signals at an object that forms a synthetic aperture of the system with the object, an object beamformer unit to (i) beamform the object coherently as a function of position, orientation, and/or geometry of the transducers with respect to a model of the object, and (ii) produce a beamformed output signal including spatial information about the object derived from beamforming the acoustic echoes; a data processing unit to process data and produce an image of the object based on a rendition of the position, the orientation, the geometry, and/or the surface properties of the object, relative to the coordinate system of the array, as determined by the data processing unit.

Apparatus, including an insertion tube, configured to be inserted into a body cavity and having a first lumen having a first lumen diameter and a distal opening, and a tubular channel, having a second lumen and an outer channel diameter smaller than the first lumen diameter, inserted into the first lumen. The apparatus includes a support structure, configured to be passed through a space between an inner wall of the insertion tube and an outer wall of the tubular channel to the distal opening in a folded state and to unfold, upon exit of the support structure through the distal opening, in a direction transverse to the first lumen to reach a support dimension that is greater than the first lumen diameter. A plurality of planar two-dimensional arrays of ultrasonic transducers are supported by the support structure, the arrays having transverse dimensions less than the first lumen diameter.

The invention relates to a cardiotocography girdle. It is in the form of a spherical cap and comprises at least nineteen ultrasound transducers, denoted USTs, which are positioned on a first support layer (23) made of an elastic material, each UST being positioned in a support cavity (20), said girdle comprising a second support layer (24), likewise made of an elastic material and which encapsulates said USTs housed in the support cavities (20) with the first support layer (23), assembly being performed by adhesively bonding the first support layer (23) to the second support layer (24).

A device and method for imaging, measuring and identifying multiphase fluid flow in wellbores using phased array Doppler ultrasound. The device includes a radially-configured or ring-shaped ultrasound transducer that when deployed in a well in Doppler mode can measure the velocity of radially flowing fluids in the wellbore and generate a 3D image of radial flow in the wellbore, including flowback into the wellbore after fracturing operations, or flow leaving the wellbore during water injection operations. The ring-shaped ultrasound transducer can also simultaneously operate in a B-mode to generate a B-mode image of the wellbore liner upon which the Doppler image can be overlaid. The device may also include a forward facing ultrasound transducer either instead of or in place of the ring-shaped transducer for obtaining information and images on axial flow in the wellbore in Doppler mode, and the location of phase boundaries and phase locations in B-mode.

A device and method for imaging, measuring and identifying multiphase fluid flow in wellbores using phased array Doppler ultrasound. The device includes a radially-configured or ring-shaped ultrasound transducer that when deployed in a well in Doppler mode can measure the velocity of radially flowing fluids in the wellbore and generate a 3D image of radial flow in the wellbore, including flowback into the wellbore after fracturing operations, or flow leaving the wellbore during water injection operations. The ring-shaped ultrasound transducer can also simultaneously operate in a B-mode to generate a B-mode image of the wellbore liner upon which the Doppler image can be overlaid. The device may also include a forward facing ultrasound transducer either instead of or in place of the ring-shaped transducer for obtaining information and images on axial flow in the wellbore in Doppler mode, and the location of phase boundaries and phase locations in B-mode.