registration 3d alignment lungs

hi i need make a registration of 3d lungs.

i have a 3d matrix of 5 pacients and i need made the registration with the image with volume how i do that?

other question is, how i simult a tumor on this matrix? i need put a circle in the image but i dont know how?

[Sean de Wolski]

Do you have access to the R2012b Prerelease?

[basna]

no