Ultrasound imaging equipment, system and image enhancement method for contrast-enhanced ultrasound imaging

Abstract

An ultrasound imaging device, a system and an image enhancement method for contrast-enhanced ultrasound imaging thereof. Because the image enhancement coefficients of each position point in the detected biological tissue are first calculated according to the contrast channel data, and then the image enhancement coefficients and the beamforming data are weighted.

Description

technical field [0001] The invention relates to an ultrasound imaging device, in particular to an image enhancement technology for contrast-enhanced ultrasound imaging in the ultrasound imaging device. Background technique [0002] Existing contrast-enhanced ultrasound imaging uses the traditional focused emission mode. Taking the most basic single beam as an example, only one receiving line can be formed for each transmission; even if multi-beam parallel processing is used, the number of transmissions cannot be significantly reduced. For contrast-enhanced ultrasound imaging, more firing times means that the excitation intensity of the microbubbles in a unit frame by the sound field increases, which will inevitably lead to a shortening of the duration of the contrast-enhanced image, thereby affecting the integrity of blood perfusion at the lesion. Although the purpose of prolonging the duration can be achieved by reducing the number of transmissions or reducing the intensit...

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Problems solved by technology

However, arc artifacts caused by signal saturation will appear in plane wave contrast images, such as figure 1 shown in the white box

In the process of ultrasonic diagnosis, the arc artifact will bring trouble to the doctor, making it difficult for the doctor to judge whether the strong signal is the ultrasonic echo reflected by the biological tissue under test or interference, which may lead to misdiagnosis by the doctor

[0004] In order to eliminate arc artifacts, on the one hand, the receiving aperture can be reduced or the receiving apodization coefficient can be adjusted to control it, but this solution will broaden the main lobe of the signal, resulting in a decrease in the lateral resolution of imaging; on the other hand, it can reduce Analog gain to minimize saturation at the expense of signal strength

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