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Recently, significant improvement in image resolution has been demonstrated by applying adaptive beamforming to medical ultrasound imaging. In this paper, we have used the minimum-variance beamformer to show how the low sidelobe levels and narrow beamwidth of adaptive methods can be used, not only to increase resolution, but also to enhance imaging in several ways. By using a minimum-variance beamformer...
Minimum variance beamformers adapt to the received data. In the case of perfect data, this beamformer can produce images with better point and edge definitions than conventional delay-and-sum beamformers. But in medical ultrasound imaging, the quality of the data is often corrupted by aberration. As higher resolution often is associated with less robustness, a study using a 1D phase aberrator was...
Recently, significant improvement in image quality has been demonstrated by applying the minimum variance (MV) beamformer to medical ultrasound imaging. In this paper we show that the low sidelobe level and narrow beamwidth of the MV beamformer can be utilized, not only to increase resolution, but to enhance image quality in several ways: Fewer and wider transmit beams combined with increased number...
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