Ian J Gerard1, D Louis Collins2. 1. McConnell Brain Imaging Centre, Montreal Neurological Institute and Hospital, McGill University, WB 221, 3801 University Street, Montreal, QC, H3A 2B4, Canada. ian.gerard@mail.mcgill.ca. 2. McConnell Brain Imaging Centre, Montreal Neurological Institute and Hospital, McGill University, WB 221, 3801 University Street, Montreal, QC, H3A 2B4, Canada.
Abstract
PURPOSE: This study quantifies some of the technical and physical factors that contribute to error in image-guided interventions. Errors associated with tracking, tool calibration and registration between a physical object and its corresponding image were investigated and compared with theoretical descriptions of these errors. METHODS: A precision milled linear testing apparatus was constructed to perform the measurements. RESULTS: The tracking error was shown to increase in linear fashion with distance normal to the camera, and the tracking error ranged between 0.15 and 0.6 mm. The tool calibration error increased as a function of distance from the camera and the reference tool (0.2-0.8 mm). The fiducial registration error was shown to improve when more points were used up until a plateau value was reached which corresponded to the total fiducial localization error ([Formula: see text]0.8 mm). The target registration error distributions followed a [Formula: see text] distribution with the largest error and variation around fiducial points. CONCLUSIONS: To minimize errors, tools should be calibrated as close as possible to the reference tool and camera, and tools should be used as close to the front edge of the camera throughout the intervention, with the camera pointed in the direction where accuracy is least needed during surgery.
PURPOSE: This study quantifies some of the technical and physical factors that contribute to error in image-guided interventions. Errors associated with tracking, tool calibration and registration between a physical object and its corresponding image were investigated and compared with theoretical descriptions of these errors. METHODS: A precision milled linear testing apparatus was constructed to perform the measurements. RESULTS: The tracking error was shown to increase in linear fashion with distance normal to the camera, and the tracking error ranged between 0.15 and 0.6 mm. The tool calibration error increased as a function of distance from the camera and the reference tool (0.2-0.8 mm). The fiducial registration error was shown to improve when more points were used up until a plateau value was reached which corresponded to the total fiducial localization error ([Formula: see text]0.8 mm). The target registration error distributions followed a [Formula: see text] distribution with the largest error and variation around fiducial points. CONCLUSIONS: To minimize errors, tools should be calibrated as close as possible to the reference tool and camera, and tools should be used as close to the front edge of the camera throughout the intervention, with the camera pointed in the direction where accuracy is least needed during surgery.
Authors: Laurence Mercier; Rolando F Del Maestro; Kevin Petrecca; Anna Kochanowska; Simon Drouin; Charles X B Yan; Andrew L Janke; Sean Jy-Shyang Chen; D Louis Collins Journal: Int J Comput Assist Radiol Surg Date: 2010-10-01 Impact factor: 2.924
Authors: Johann B Hummel; Michael R Bax; Michael L Figl; Yan Kang; Calvin Maurer; Wolfgang W Birkfellner; Helmar Bergmann; Ramin Shahidi Journal: Med Phys Date: 2005-07 Impact factor: 4.071
Authors: C R Maurer; G B Aboutanos; B M Dawant; S Gadamsetty; R A Margolin; R J Maciunas; J M Fitzpatrick Journal: J Comput Assist Tomogr Date: 1996 Jul-Aug Impact factor: 1.826
Authors: Marta Kersten-Oertel; Ian Gerard; Simon Drouin; Kelvin Mok; Denis Sirhan; David S Sinclair; D Louis Collins Journal: Int J Comput Assist Radiol Surg Date: 2015-02-26 Impact factor: 2.924
Authors: Ian J Gerard; Marta Kersten-Oertel; Simon Drouin; Jeffery A Hall; Kevin Petrecca; Dante De Nigris; Daniel A Di Giovanni; Tal Arbel; D Louis Collins Journal: J Med Imaging (Bellingham) Date: 2018-01-26