Volume slicing of cone-beam computed tomography images for navigation of percutaneous scaphoid fixation
| Autor: | David R. Pichora, Randy E. Ellis, Braden Gammon, Paul St. John, Hisham Al-Sanawi, Erin Janine Smith |
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| Rok vydání: | 2011 |
| Předmět: |
medicine.medical_specialty
Cone beam computed tomography Percutaneous Computer science Bone Screws ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Biomedical Engineering Health Informatics Bone Nails Fixation (surgical) Fracture Fixation Internal Fractures Bone Imaging Three-Dimensional Fracture fixation medicine Humans Radiology Nuclear Medicine and imaging book Scaphoid Bone Drill business.industry General Medicine Cone-Beam Computed Tomography Computer Graphics and Computer-Aided Design Direct navigation Computer aided surgery Computer Science Applications Scaphoid bone Surgery Computer-Assisted Calibration book.journal Surgery Computer Vision and Pattern Recognition Radiology Nuclear medicine business |
| Zdroj: | International journal of computer assisted radiology and surgery. 7(3) |
| ISSN: | 1861-6429 |
| Popis: | Percutaneous scaphoid fixation (PSF) is growing in popularity as a treatment option for non-displaced fractures. Success of this procedure demands high-precision screw placement, which can be difficult to achieve with standard 2D imaging. This study aimed to develop and test a system for computer-assisted navigation using volume slicing of 3D cone-beam computed tomography (CBCT). The navigated technique involved a distinctive workflow in which a 3D CBCT imager was calibrated preoperatively, circumventing the need for intraoperative patient-based registration. Intraoperatively, a 3D CBCT image was acquired for both preoperative planning and direct navigation using volume-rendered slices. An in vitro study was conducted to compare the navigated approach to two conventional fluoroscopic methods for volar PSF. The surgical goal was to insert a guide wire to maximize both length and central placement. There was no significant difference in the mean central placement of guide wire, although the variance in central placement was significantly lower using VS navigation (P < 0.01). The lengths of the drill paths were significantly longer for the VS-navigated group compared with one 2D group (P < 0.1). Each navigated trial required only one drilling attempt and resulted in less radiation exposure than conventional C-arm (P < 0.01). Volume-sliced navigation achieved a more repeatable and reliable central pin placement, with fewer drilling attempts than conventional 2D techniques. Volume-sliced navigation had a higher number of drill paths within the optimal zone maximizing both length of the path and depth from the surface. |
| Databáze: | OpenAIRE |
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