A handheld ultrasound device comprises a plurality of components configured to provide decreased size, weight, complexity and power consumption. The handheld ultrasound device may comprise an ultrasound transducer and an analog to digital (“A/D”) converter coupled to the ultrasound transducer. A processor comprising a beamformer can be coupled to the A/D converter and configured to selectively store a plurality of signals from the A/D converter in a memory of the processor. The beamformer can be configured to implement and compress a flag table in place of a delay table. These improvements can decrease the amount of memory used to generate ultrasound images, which can decrease the size weight and power consumption of the handheld ultrasound device.

In one embodiment, a supervisory service for a wireless network obtains frequency-time Doppler profile information for an endpoint node attached to a first access point in the wireless network. The supervisory service uses the frequency-time Doppler profile information for the endpoint node as input to a machine learning model. The machine learning model is trained to output an action for the endpoint node with respect to the wireless network. The supervisory service causes the action for the endpoint node with respect to the wireless network to be performed.

Systems and methods of ultrasound imaging of an object that includes multiple depth zones. Each of the zones can be imaged using a different frequency, or the same frequency as another zone. A method includes imaging a first zone using plane wave imaging, imaging a second zone using tissue harmonic imaging, and imaging a third zone using fundamental and subharmonic deep imaging. The depth of each zone can vary based on the ultrasonic array, and correspondingly, the F # used for imaging the zone. In an example, zones can be imaged at different F #'s, for example, at F #1 for the first zone, at F #2, F #3, or F #6 for one or more zones that extend deeper into the object than the first zone. The method can also include forming an image based on the received signals from the multiple zones, and blending the transitions between the zones.

Many different types of systems are utilized and tasks are performed in a marine environment. The present invention provides various configurations of castable devices that can be operated and/or controlled for such systems or tasks. One or more castable devices can be integrated with a transducer assembly, such as a phased array, that emits sonar beams and receives sonar returns from the underwater environment. Processing circuitry may receive the sonar returns, process the sonar returns, generate an image, and transmit the image to a display.

Many different types of systems are utilized and tasks are performed in a marine environment. The present invention provides various configurations of castable devices that can be operated and/or controlled for such systems or tasks. One or more castable devices can be integrated with a transducer assembly, such as a phased array, that emits sonar beams and receives sonar returns from the underwater environment. Processing circuitry may receive the sonar returns, process the sonar returns, generate an image, and transmit the image to a display.

An ultrasound detection device comprising: an ultrasound receiver configured to generate a signal indicative of a pressure of ultrasound that impinges on the receiver; and a coded mask comprising an ultrasound-blocking material perforated by an array of a plurality of apertures, the apertures arranged such that when the coded mask is placed over the receiver between the receiver and a source of ultrasound in a predetermined lateral position, the ultrasound is transmitted from the ultrasound source to the receiver via a known unique pattern of active apertures of the plurality of apertures such that the signal that is generated by the receiver is a multiplexed signal.

A system and method are provided for increasing the resolvability of an echo sounding system by acquiring multiple survey lines under one or more different conditions to produce overlapping swaths of seafloor data. The difference conditions may include one or more of acquiring the survey lines along adjacent paths that are offset by less than a swath width, acquiring survey lines at different headings, and acquiring survey lines at different speeds.

A system and method are provided for increasing the resolvability of an echo sounding system by acquiring multiple survey lines under one or more different conditions to produce overlapping swaths of seafloor data. The difference conditions may include one or more of acquiring the survey lines along adjacent paths that are offset by less than a swath width, acquiring survey lines at different headings, and acquiring survey lines at different speeds.

A shear wave elastography method for imaging an observation field in an anisotropic medium, including an initial ultrasonic acquisition step during which initial physical parameters are acquired in at least one region of interest; a spatial characterization step during which a set of spatial characteristics of the anisotropic medium is determined on the basis of the initial physical parameter; an excitation substep during which an shear wave is generated inside the anisotropic medium on the basis of the set of spatial characteristics; and an observation substep during which the propagation of the shear wave is observed simultaneously at a multitude of points in the observation field.

An ultrasound system is described which produces blended fundamental and harmonic frequency images. Successively transmitted, differently modulated pulses are transmitted by an ultrasound probe and both fundamental and harmonic frequencies are received in response. The echo signals received from the two pulses are processed by pulse inversion, producing cleanly separated bands of fundamental and harmonic signals in which undesired components have been cancelled. Since the two bands have been separated by signal cancellation rather than filtering, the two bands are allowed to overlap, providing broadband signals in each band. The bands are filtered by bandpass filtering to define the fundamental and harmonic signals to be imaged. The signals are detected, and the detected signals are combined after weighting to produce a blended fundamental/harmonic image.