Methods and systems for storing and processing a plurality of fractions of imaging data thereby minimizing the amount of cache memory necessary while controlling data loss and the resulting image quality.

Provided are a method and device for ultrasonic imaging by synthetic focusing. The method comprises: exciting a plurality of matrix elements of an ultrasonic probe to transmit plane waves many times, wherein transmitting apodizations at the time of every transmission of the plane waves by the plurality of matrix elements correspond to the respective lines in a measurement matrix in which elements are randomly distributed; after every transmission of the plane waves, exciting all the matrix elements of the ultrasonic probe to receive echo signals, in order to obtain channel data; recovering a synthetic focusing channel data set by use of a compressed sensing reconstruction algorithm according to a channel data set and the measurement matrix; and subjecting the synthetic focusing channel data set to beamforming so as to generate an ultrasonic image.

In an image compressing ultrasound system, for generating an imaging sample, delays are applied transducer-element-wise to respective time samples. The delayed samples are summed coherently in time, the coherently summed delays being collectively non-focused. An image is sparsified based on imaging samples and, otherwise than merely via said imaging samples, on angles (236) upon which respectively the delays for the generating of the imaging samples are functionally dependent. An image-compressing processor (120) may minimize a first p-norm of a first matrix which is a product of two matrices the content of one representing the image in a compression basis. The minimizing is subject to a constraint that a second p-norm of a difference between a measurement matrix and a product of an image-to-measurement-basis transformation matrix, an image representation dictionary matrix, and the matrix representing the image in the compression basis does not exceed an allowed-error threshold. The measurement matrix is populated either by channel data, or by output of a Hilbert transform applied to the channel data in a time dimension.

A display apparatus and driving method are discussed where the ultrasonic imaging apparatus includes an ultrasonic transducer configured to sequentially output a first ultrasonic signal, a second ultrasonic signal, and a third ultrasonic signal; a beamforming unit configured to generate a first synthesized signal by delaying the first ultrasonic signal and synthesizing the delayed first ultrasonic signal with the second ultrasonic signal, and to generate a second synthesized signal by delaying the first synthesized signal and synthesizing the delayed first synthesized signal with the third ultrasonic signal.

Ultrasound signal processing circuitry and related apparatus and methods are described. Signal samples received from an ultrasound transducer array in an ultrasound transducer based imaging system may be processed, or conditioned, by application of one or more weighting functions. In some embodiments, one or more weighting functions may be applied to the signal samples in the time domain. In other embodiments, the signal samples may be converted to the frequency domain and one or more weighting functions may be applied in the frequency domain. In further embodiments, one or more weighting functions may be applied in the time domain and one or more weighting functions may be applied in the frequency domain. The weighting functions may be channel dependent and/or channel independent. The processed data can be provided to an image formation processor.

A method includes receiving from multiple transducers respective signals including reflections of a transmitted signal from a target. An image of the target is produced irrespective of sparsity of the received signals, by computing transducer-specific frequency-domain coefficients for each of the received signals, deriving, from the transducer-specific frequency-domain coefficients, beamforming frequency-domain coefficients of a beamformed signal in which the reflections received from a selected direction relative to the transducers are emphasized, and reconstructing the image of the target at the selected direction based on the beamforming frequency-domain coefficients.

A detection circuit detects a signal output from an element that receives an acoustic wave. The detection circuit is configured so as not to conduct a detection operation during a period in which the element does not receive the acoustic wave.

A radar apparatus is provided which includes a counter which counts a transmission count of pulse codes from start of measurement, a pulse code generator which selects a complementary group from among a plurality of complementary groups obtained by grouping a plurality of pulse codes generated by at least one code coupling process on at least one basic code pair as complementary codes every time the transmission count is an integral multiple of a code count in the plurality of complementary groups, and a transmitter which transmits the pulse codes belonging to the selected complementary group.

An ultrasound probe is provided for multi-faceted exams, such as for triage and emergency. The probe can include different transducer arrays, such as a linear, a curved linear, and a sector array that are combined into a single hand held unit with a wireless display. Related methods are provided, such as a method for automatically selecting the appropriate array for the user to scan with based on the intended exam and/or location of the probe on the body of a patient.

According to one embodiment, an ultrasound diagnosis apparatus transmits ultrasound waves to a subject from a plurality of transducers each corresponding to one of a plurality of channels, and receives reflected waves generated in the subject by the transducers. The ultrasound diagnosis apparatus includes a control circuit and a receiving circuit. The control circuit controls channels used to transmit ultrasound waves and channels not used to transmit ultrasound waves among the channels. The receiving circuit receives the reflected waves, and includes a preamplifier and an impedance control circuit. The preamplifier amplifies the reflected waves. The impedance control circuit is located on the upstream side of the preamplifier, and sets line impedance in a transmitting period, in which the ultrasound waves are transmitted from the transducers to the inside of the subject, to be lower than that in a receiving period, in which the reflected waves are received by the transducers.