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Table 1 Conspicuity grades of breast lesions on the high b value DW imaging

From: Conspicuity of breast lesions at different b values on diffusion-weighted imaging

Grade Description
1 = not seen Isointensity (symmetric signal intensity of bilateral breast)
2 = probably seen Nonlocalized, mild to moderate signal with indistinct margin
3 = seen Circumscribed, mild to moderate signal with definite margin
4 = readily seen Nonlocalized, strong signal with indistinct margin
5 = well seen Circumscribed, strong signal with definite margin