A virtual fluoroscopy system and its use for image guidance in unicompartmental knee surgery.
The C-arm fluoroscope is an indispensable intraoperative 2D imaging device for orthopaedic surgery. However, its frequent use in an operation presents a significant radiation hazard to the theatre staff and patient. A recent technique known as virtual fluoroscopy (VF) enhances the fluoroscope's capability for image guided surgery by tracking optically the position of the C-arm, surgical instruments and the patient. Virtuality is achieved by overlay of surgical instruments onto one or more previously captured fluoroscopic images. A key benefit of VF is that it reduces considerably the radiation hazard. This paper reports on a new VF technique for tracking and calibration of the fluoroscopic C-arm. Also reported is the use of our VF system to provide a new image guided technique for the accurate placement of the femoral component of unicompartmental knee prosthesis.
Department of Computer Science, University of Hull, UK.
R
R
Phillips
V
V
Peter
G-E
GE
Faure
Q
Q
Li
K P
KP
Sherman
W J
WJ
Viant
M
M
Bielby
A M M A
AM
Mohsen
D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation*; D002138:Calibration; D003198:Computer Simulation; D003199:Computer Systems; D001330:Electronic Data Processing / Q000295:instrumentation*; D005471:Fluoroscopy / Q000295:instrumentation*; D006801:Humans; D019047:Phantoms, Imaging; D017755:Prosthesis Fitting; D011874:Radiometry; D025321:Surgery, Computer-Assisted / Q000295:instrumentation*; D013525:Surgical Instruments; D014584:User-Computer Interface