Low complexity adaptive beamforming with multi line transmit cardiac ultrasound

Multi-line transmission (MLT) is a recently developed method for high frame rate cardiac ultrasound imaging. However, a potential pitfall of this method is the presence of artifacts due to cross-talk between the MLT beams. Low complexity adaptive beamforming (LCA) is a high resolution adaptive beamforming method that chooses a weighting function out of a predefined set of apodization functions assembled from Kaiser windows (regular / with shifted peak response, and also applying the “inverse” window). The objective of the current work was to experimentally examine whether the LCA setup (along with Tukey windowing and additional low-sidelobe apodizations) can attenuate the MLT artifacts better than Tukey windowing alone, at an improved spatial resolution.