HIGHLIGHTS
SUMMARY
In the early years of real-time breast sonography, it was rapidly understood that high-frequency transducers were necessary to achieve an adequate axial and lateral resolution and appropriately image mammary abnormalities. Frequencies from 10 MHz to 15 MHz are now routinely adopted in breast sonography, allowing superficial to deep planes of breasts and their abnormalities to be displayed with a sufficiently high spatial resolution, including axial and lateral resolution, and tissue 2 of 11 contrast, improving the differentiation of subtle shades of gray, margin resolution, and lesion conspicuity in the background of normal . . .
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