Multiplexed ultrasound beam summation for side lobe reduction.

ABSTRACT: Two-way focusing, which relies on sweeping a focused beam across a field of view, is the conventional method for performing high-quality ultrasound imaging. Side lobes resulting from diffraction reduce the image contrast, thus degrade the image quality. In this paper, we present a new method for beam shaping the transmitted ultrasound waveform in order to reduce side lobes and improve image quality. The beam shaping is achieved by transmitting two different waveforms that are interlaced between the odd and even elements. One waveform generates a standard diffraction-limited single focus, and the second waveform generates two foci at the same focal depth as the single focus. The distance between the two foci is selected such that they will destructively interfere with the first order side l

SUBMITTER: Ilovitsh A 

PROVIDER: S-EPMC6765004 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature