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. Author manuscript; available in PMC: 2014 Jul 21.
Published in final edited form as: Phys Med Biol. 2013 Jun 27;58(14):4951–4979. doi: 10.1088/0031-9155/58/14/4951

Figure 7.

Figure 7

Overall registration performance as a function of registration step (➁, ➂, and ➃) evaluated from 25 pairs of CT and CBCT images. The TRE, global ECC, and local NPMI improved with each step, yielding mean geometric accuracy within ~2 mm.