There is provided an apparatus for generating a jamming signal for deceiving a transmission/reception device. The apparatus includes a reception unit configured to receive a signal transmitted from the transmission/reception device and a determination unit configured to determine whether or not the received signal is a pulse compression signal. The apparatus further includes a generation unit configured to determine, when the received signal is a pulse compression signal, a deception frequency based on a frequency bandwidth and a pulse width of the received pulse compression signal and generate the jamming signal based on the determined deception frequency.

Technologies for correcting beamformed data are disclosed. A sonar computing device receives, at two or more sets of two-dimensional (2D) subarrays of a multi-element detector array, raw data representing a three-dimensional (3D) volumetric view of a space. A first set of subarrays of the two or more sets of subarrays includes elements of the detector array along a first direction. A second set of subarrays of the two or more sets of subarrays includes elements of the detector array along a second direction. The raw data is subdivided into slices and beamformed. The beamformed data is corrected by, per slice, obtaining first phase data from the first set, obtaining second phase data from the second set, correcting a beam position of each beam in the first and second directions per voxel based on the first and second phase data, and interpolating the corrected beam positions to an output grid.

Two-dimensional transducers arrays for ultrasound imaging is disclosed. The two-dimensional arrays are suitable for formation of two-dimensional (2D) and/or three-dimensional (3D) ultrasound images. The two-dimensional arrays are suitable for real-time 2D and/or 3D ultrasound imaging. The bowtie transducer arrays and the rectangular transducer arrays are suitable for real-time 2D and/or 3D ultrasound imaging.

A two-dimensional wideband ultrasound transducer array for three or four-dimensional (volume+time) non-invasively imaging/mapping of electrical current in, for example, the brain through the skull, or the heart. The probe also has unique capabilities for three-dimensional transcranial or transthoracic pulse echo ultrasound (tissue structure, motion, bone thickness) and doppler blood flow imaging. The handheld device interfaces with an ultrasound delivery system for applications to human brain or heart imaging, ultrasound neuromodulation, and therapy. The handheld ultrasound array enables three-dimensional steering of an ultrasound beam through the human skull or chest for ultrasound, doppler, and acoustoelectric imaging and related modalities to aid in the diagnosis and treatment of brain or heart disorders.

The invention relates to a method and a device for imaging a visco-elastic medium [2]. The method comprises the steps of excitation during which an internal mechanical stress is generated in an excitation zone [A]; and imaging by acquiring signals during movements generated by the mechanical stress in the visco-elastic medium [2] in response to the internal mechanical stress in an imaging zone [B] that includes the excitation zone [A]. According to the invention said method further comprises a step of calculating a quantitative index [Cij] associated with the rheological properties of the visco-elastic medium [2] at at least one point [Bij] of the imaging zone [B] situated at a given depth outside the excitation zone [A]. The quantitative index [Cij] is representative of a comparison between signals acquired during the movements generated in response to the mechanical stress at at least one point [Ai] of the excitation zone [A] situated at the given depth, and signals acquired during the movements generated in response to the mechanical stress at at least the point [Bij] of the imaging zone [B] situated outside the excitation zone [A].

The invention relates to a method and a device for imaging a visco-elastic medium (2). The method comprises an excitation step during which an internal mechanical stress is generated in an excitation zone [A] and an imaging step of acquiring signals during the movements generated by the mechanical stress in the visco-elastic medium (2) in response to the internal mechanical stress in an imaging zone [B] that includes the excitation zone [A]. According to the invention, the method further comprises a step of calculating a quantitative index [Cij] associated with the rheological properties of the visco-elastic medium (2) at at least one point [Bij] of the imaging zone situated at a given depth outside the excitation zone [A].

The invention generally relates systems and methods to for producing an image from a rotational intravascular ultrasound device. A method can include alternately transmitting complementary Golay codes to a plurality of transducers in a intravascular ultrasound device; receiving echoes of the complementary codes from the transducers; performing pulse compression of the echoes that comprises weighting the received echoes and summing an odd number of weighted echoes, wherein a center echo is given a weighted value of 1.0 and weighted sums of its neighbors constitute complementary echoes of a Golay pair; and producing an image from the compressed echoes. A system can include a processor; and a plurality of beam modules coupled to the processor, each module comprising: a receiver for receiving a trigger signal from the processor; a complex programmable logic device programmed with a Golay code; a high voltage switching transmitter; and an ultrasound transducer.

Beamformed sonar data is compressed before communicating the data to a storage step or to a further processing step. At lease some of the beams of the compressed beamformed data have values for at least two different ranges.

An ultrasound apparatus comprising a plurality of ultrasonic transducers, a non-acoustic sensor, a memory circuitry to store control data for operating the ultrasound apparatus to perform an acquisition task, and a controller. The controller is configured to receive an indication to perform the acquisition task, receive non-acoustic data obtained by the non-acoustic sensor, and control, based on the control data and the non-acoustic data, the plurality of ultrasonic transducers to obtain acoustic data for the acquisition task.

An ultrasound apparatus comprising a plurality of ultrasonic transducers, a non-acoustic sensor, a memory circuitry to store control data for operating the ultrasound apparatus to perform an acquisition task, and a controller. The controller is configured to receive an indication to perform the acquisition task, receive non-acoustic data obtained by the non-acoustic sensor, and control, based on the control data and the non-acoustic data, the plurality of ultrasonic transducers to obtain acoustic data for the acquisition task.