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Example of Radon-domain functions: (a) a CC mammogram; (b) external ROI of segmented fibroglandular disc; (c) internal ROI of segmented fibroglandular disc; (d) Radon transform (R(t,θ)) of external ROI; (e, f) functions R(θ) and R(t) for external ROI; (g) Radon transform (R(t,θ)) of internal ROI; (h, i) functions R(θ) and R(t) for internal ROI.
