- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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Geometric Calibration of Markerless Optical Surgical Navigation System
摘要： Background: Patient-to-image registration is required for image-guided surgical navigation, but marker-based registration is time consuming and subject to manual error. Markerless registration is an alternative solution to avoid these issues. Methods: This study designs a calibration board and proposes a geometric calibration method to calibrate the near infrared tracking and structured light components of the proposed optical surgical navigation system simultaneously. Results: A planar board and a cylinder are used to evaluate the accuracy of calibration. The mean error for the board experiment is 0.035 mm, and the diameter error for the cylinder experiment is 0.119 mm. A calibration board is reconstructed to evaluate the accuracy of the calibration, and the measured mean error is 0.012 mm. A head phantom is reconstructed and tracked by the proposed optical surgical navigation system. The tracking error is less than 0.3 mm. Conclusions: Experimental results show that the proposed method obtains high accessibility and accuracy and satisfies application requirements.
关键词： Calibration,Markerless,Structure light,Optical surgical navigation system
更新于2025-09-23 15:23:52
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[IEEE 2018 IEEE International Conference on Imaging Systems and Techniques (IST) - Krakow (2018.10.16-2018.10.18)] 2018 IEEE International Conference on Imaging Systems and Techniques (IST) - Assessment of a Markerless Optical Tracking Technique for Computer-Assisted Hip Surgery
摘要： This article presents an evaluation of a prototype optical tracking system intended for use in computer-assisted orthopedic surgery. The device is based on a smartphone with a built-in video camera, and an external miniature time-of-flight camera. It is able to automatically recognize a surgical instrument based on its shape and appearance, and to determine its orientation relative to an array of light-reflective markers. The experiments were done in a measurement configuration and with the instruments that are specific to computer-assisted implantation of the acetabular component in total hip replacement surgery. The evaluation included the recognition rate of the instruments, and the angular accuracy of the system. The results show, that the accuracy is comparable to that obtained by conventional tracking devices in clinical settings, and partially meets the requirements specified in the literature for hip surgery.
关键词： optical tracking,surgical navigation,accuracy,computer assisted surgery,time of flight camera
更新于2025-09-23 15:22:29
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Frequency and Causes of Line of Sight Issues During Neurosurgical Procedures Using Optical Image-Guided Systems
摘要： Navigation (image guidance) is an essential tool in modern neurosurgery, and most surgeons use an optical tracking system. Although the technology is accurate and reliable, one often is confronted by line of sight issues that interrupt the flow of an operation. There has been feedback on the matter, but the actual problem has not been accurately quantified, therefore making this the primary aim of this study. It is particularly important given that robotic technology is gradually making its way into neurosurgery and most of these devices depend on optical navigation when procedures are being conducted.
关键词： Line of sight issue,Optical image-guided surgery,Surgical navigation
更新于2025-09-10 09:29:36