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. 2017 Apr 26;164(2):385–393. doi: 10.1007/s10549-017-4256-y

Fig. 1.

Fig. 1

Example of calculation of shape symmetry using the root mean squared (RMS). Reproduced with the permission of Canfield Scientific. The left breast image is reflected onto the right. In the first image a geometric pattern is applied to one breast image. The perpendicular distances from all the interception points of the grid to the other breast is calculated (second and third image)