High-fidelity haptic and visual rendering for patient-specific simulation of temporal bone surgery. Issue 1 (1st January 2016)

• Record Type: Journal Article
• Authors: Chan, Sonny; Li, Peter; Locketz, Garrett; Salisbury, Kenneth; Blevins, Nikolas H.
• Is Part Of: Computer assisted surgery. Volume 21:Issue 1(2016)
• Page Start: 85
• Page End: 101
• Publication Date: 2016-01-01
• Subjects: Force feedback -- haptics -- simulation -- skull base surgery -- surgical planning -- virtual reality; Computer-assisted surgery -- Periodicals
• DOI: 10.1080/24699322.2016.1189966
• Languages: English
• ISSNs: 2469-9322

Abstract

Abstract: Medical imaging techniques provide a wealth of information for surgical preparation, but it is still often the case that surgeons are examining three-dimensional pre-operative image data as a series of two-dimensional images. With recent advances in visual computing and interactive technologies, there is much opportunity to provide surgeons an ability to actively manipulate and interpret digital image data in a surgically meaningful way. This article describes the design and initial evaluation of a virtual surgical environment that supports patient-specific simulation of temporal bone surgery using pre-operative medical image data. Computational methods are presented that enable six degree-of-freedom haptic feedback during manipulation, and that simulate virtual dissection according to the mechanical principles of orthogonal cutting and abrasive wear. A highly efficient direct volume renderer simultaneously provides high-fidelity visual feedback during surgical manipulation of the virtual anatomy. The resulting virtual surgical environment was assessed by evaluating its ability to replicate findings in the operating room, using pre-operative imaging of the same patient. Correspondences between surgical exposure, anatomical features, and the locations of pathology were readily observed when comparing intra-operative video with the simulation, indicating the predictive ability of the virtual surgical environment.