Laser-beam projection mapping with compensation for soft-tissue deformation

Abstract

The compensation for tissue deformation is a significant concern in computer-assisted navigation for soft organ surgeries. In brain surgeries, brain shift depends on surgical conditions, but might be almost non-negligible to realize precise navigation. Since organ deformations can cause large navigation error, most applications are still in orthopedic surgeries. Another problem in navigation is intuitive visualization of surgical plans. A number of techniques such as augmented reality and projection mapping have been proposed for it. However, most systems do not support any compensation for organ deformation. Therefore, we propose a method of PM surgical navigation that supports the compensation for brain-shift deformation. The proposed system reduced error in brain deformation tracking to around one second and showed the feasibility of PM in brain surgeries.