Clinical Pedicle Screw Insertion Trials and System Improvement of C-arm Image Navigation System
| Autor: | Ching-Shiow Tseng, Alex Tse, Hong-Yu Chu, Ching-Hsiao Yu, Chih-Ju Chang, Geng-Li Lin |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Engineering
business.industry Biomedical Engineering Navigation system General Medicine Filter (signal processing) 030218 nuclear medicine & medical imaging Image (mathematics) Compensation (engineering) Projection model 03 medical and health sciences 0302 clinical medicine Robustness (computer science) Computer vision Artificial intelligence business Pedicle screw 030217 neurology & neurosurgery Time synchronization |
| Zdroj: | Journal of Medical and Biological Engineering. 36:44-52 |
| ISSN: | 2199-4757 1609-0985 |
| DOI: | 10.1007/s40846-016-0107-2 |
| Popis: | C-arm-image-assisted navigation systems for orthopedic surgery have been applied clinically for several years. Pedicle screw implantation is one of the important applications. A precise definition of a C-arm X-ray projection model is the key requirement for a C-arm-assisted navigation system. This study proposes using a high-pass filter to extract the contour of large markers of the image calibrator and an adaptive threshold method to segment images of small markers, thus improving the overall recognition rate of markers and enhancing the robustness of image calibration. A method for time synchronization of X-ray imaging and the detection of a patient’s lumbar position data for respiration compensation is also proposed. Positioning accuracy evaluation of the developed C-arm-assisted navigation system was carried out clinically. The results show that the mean positioning error is 2.409 mm and that the mean direction error is 1.449°. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink