The Adaptive Balloon Forces for Active Surface Models in Skull Repair Technique

Brain is one of the body's important organs. Skull defects can increased the risk of brain infection, decreased brain protection, caused social barriers from disfigurement of the head. Patients need a prosthesis to fill the damaged area. There are still some disadvantages in the existing prosthesis reconstruction methods. This study proposes an active surface models to automatically identify suitable skull prosthesis. But active surface models usually rebuilds the 3D model from the known image instead of repairs the damaged area. Therefore, this paper adds the original active surface models to the adaptive balloon force. Not only solve the excessive expansion of the defected area caused by original balloon force but also make the prosthesis more similar to the real shape of the skull. Finally, using 3D printing to quickly produce prosthesis that are irregularly shaped, help clinicians make prosthesis faster and more accurately.