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Left to right: Example complex spectrum, its corresponding DISPA curve, and the radial difference at each spectral location, from a voxel in an IDC lesion (top) and a fibroadenoma (bottom). The DISPA plots show a reference circle corresponding to a perfect Lorentzian lineshape. The spectrum from the malignant lesion shows greater shape distortion, as evidenced by the larger total radial difference (TRD) shown.
