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Dependence of deformable registration on the size of excision. A single coronal plane from the 3D volume is shown in each case. (a) Fixed images featuring an excision varying in size from ∼1 cm3 (the real excision in Figs. 567) to 2.5–17 cm3 (simulated excisions). Registered images and NCC map for the conventional Demons approach are shown in (b)–(d), and those for the XDD approach are shown in (e)–(g).
