Research Article

Automatic PET-CT Image Registration Method Based on Mutual Information and Genetic Algorithms

Figure 4

MI translational ( 𝑡 𝑥 , 𝑡 𝑦 , and 𝑡 𝑧 ) and rotational ( 𝑟 𝑥 , 𝑟 𝑦 , and 𝑟 𝑧 ) patterns for different percentages of signal attenuation in the PET model.
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