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Fast CT/PET registration based on partial volume matching

: Firle, E.; Wesarg, S.; Dold, C.

Lemke, H.U.:
CARS 2004, Computer Assisted Radiology and Surgery : Proceedings of the 18th International Congress and Exhibition, Chicago,USA, June 23 - 26, 2004
Amsterdam: Elsevier, 2004 (International Congress Series 1268)
ISBN: 0-444-51731-6
International Congress and Exhibition "Computer Assisted Radiology and Surgery" (CARS) <18, 2004, Chicago/Ill.>
Fraunhofer IGD ()
medical imaging; computed tomography; CT; volume registration

Combining CT representing bone structures and PET visualizing functional information reveals many advantages in the area of cancer diagnosis and treatment. Here, fully automatic registration is desired but very time-consuming when considering big datasets. We present a technique to register CT and PET datasets based on the "Mutual Information" criterion. To overcome the speed problem, we developed a new approach for the matching based on partial volumes introducing a "3D cross model".