IGRT 2016 Madrid

Mutual Information

p(I

,I

)

1

2

H(I M (I

,I

)=H(I )=Sp(I

MRI ,I 2

) + H(I )log

) - MI(I

,I

)

MRI-CT 1 2

1

2

CT p(I

MRI

CT

)P(I

)

1

2

The Mutual Information of 2 images is the information that is common to both images when the are reg tered

maximized

H(I

)

MRI-CT