Abstract
Not only structural navigation, but also functional navigation should be developed for cardiac and pulmonary surgeries, because those organs function by deforming their own configurations. In order to obtain functional information duringsurgery, computational biomechanics will be useful. We have been constructing a 4D lung model which links its functionwith its structure under normal and abnormal conditions. Our model will be useful for developing a structural-functionalnavigator for lung surgery.
