3 results about "Continuous wave doppler" patented technology

A handheld imaging device (100) for medical use comprising: a housing (106); and a sensor base (101) connected to the housing (106). The sensor base (101) comprises a first acoustic transducer array for imaging a sub-dermal structure in a first plane and a second transducer array for imaging the sub-dermal structure in a second plane. A processor (205), operable under control of electronic program instructions, activates transducer elements of the first transducer array (102) (e.g. operable in continuous wave Doppler ultrasound mode) and the second acoustic transducer array (103) (e.g. operable in A-mode ultrasound) to transmit signals and process receive signals reflected by the sub-dermal structure (104) to display an image of the sub-dermal structure (104), e.g. a vein. The processor (205) calculates characteristics of the sub-dermal structure (104) from the first and second imaged planes. The device (100) may be used in medical ultrasound to facilitate procedures such as cannulation and venepuncture.

An ultrasonic continuous wave Doppler imaging method and device and storage medium, the position information of the CW sampling line is used to determine the transmitting aperture center position of the probe (40), the transmitting aperture center position of the probe (40) is used to determine the transmitting aperture, and the elements included in the transmitting aperture on the probe (40) are controlled to perform the transmission of the ultrasonic beam, the determined transmitting aperture is used to determine the receiving aperture, and the elements included in the receiving aperture on the probe (40) are controlled to perform the reception of the ultrasonic beam echo, so as to obtain the ultrasonic echo signal, the influence caused by the excessively large transmitting deflection angle can be reduced, and the ultrasonic imaging effect is relatively ideal.

An ultrasound system includes a transducer array configured to generate an analog ultrasound signal. The system includes one or more analog-to-digital converters (ADCs) in communication with the transducer array. The ADCs are configured to convert the analog ultrasound signal to a digital ultrasound signal. The system includes a processor circuit in communication with the ADCs. The processor circuit includes a digital in-phase / quadrature (I / Q) mixer configured to generate a digital continuous wave (CW) Doppler signal based on the digital ultrasound signal. The processor circuit is configured to process the digital CW Doppler signal, generate a graphical representation of a distribution of blood flow velocity over a plurality of cardiac cycles, and output the graphical representation to a display in communication with the processor circuit.