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Small calculus detection is important to differentiate malignant from benign masses. Although ultrasonography has an excellent ability to depict soft tissue, it plays a secondary role in detection because of its poor calculus sensitivity compared with computed tomography and other X-ray tests. In this paper, we propose a novel method to detect small calculi using cross-correlation coefficients between...
Phase aberration is one of the major causes that deteriorates the quality of medical acoustic imaging. To suppress the influence of aberration, we employ a focused transmit beam with a low center frequency for the calculation of an aberration correction value set. The aberration correction value set is applied to a imaging process utilizing high transmit frequency. We propose the equivalent half power...
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