Purchase this article with an account.
Peter L. Gehlbach, Yong Huang, Jin U. Kang; 3-D Image Guided Retinal Surgery Using Real-Time High-Speed Fourier-Domain Optical Coherence Tomography. Invest. Ophthalmol. Vis. Sci. 2012;53(14):807.
Download citation file:
© ARVO (1962-2015); The Authors (2016-present)
To demonstrate an innovative microsurgical approach using a real-time, 3-dimensional optical coherence tomography imaging system to perform 3-D image guided basic microsurgical procedures.
A novel microsurgical imaging system based on a Fourier-Domain OCT (FD-OCT) integrated with a CPU-GPU heterogeneous computing architecture capable of OCT image processing and displaying at the maximum processing speed of approximately 252,000 A-scans/second based on NUFFT and 10 volumes/second for complex conjugate free FD-OCT was used to provide real-time 3-D video imaging of the surgical site and tool tips while basic surgical maneuvers were performed in ex vivo bovine eyes. The imaged site size was 3mm×3mm×3mm (Width × Length × Depth) sampled by 160×80x1024 pixels and was rendered to the surgeon with top, front-side and back-side views by a ray casting method. Two basic maneuvers were repeatedly performed and successfully confirmed: retinal vessel isolation with micro-pick confirmed by retinal vessel isolation with suture; subretinal cannulation with delivery of fluid confirmed by subretinal cannulation with delivery of air.
Using the 3-D surgical OCT viewing environment as the primary source of visualization, we were able to successfully perform and repeat the prototypical microsurgical maneuvers described using the retina as a model system. For each procedure there is a learning curve related to working predominantly in a 3-D OCT image environment. The data consists of video frames of all key steps. In all cases the OCT viewing environment was referenced to direct photography and or direct visualization.
The present prototype real-time, 3-dimensional optical coherence tomography imaging system allows for the performance of basic microsurgical maneuvers using the OCT viewing environment as the primary source of visual information.
This PDF is available to Subscribers Only