Rotational encoding of C-arm fluoroscope with tilt sensing accelerometer.

Victor Grzeda, Gabor Fichtinger

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

PURPOSE: Accurate, practical, and affordable joint encoding on legacy C-arm fluoroscopes is a major technical challenge. Conventional pose tracking methods, like optical cameras and radiographic fiducials, are hampered by significant shortcomings. METHODS: We propose to retrofit legacy C-arms with a tilt sensing accelerometer for rotation encoding. Our experimental setup consists of affixing an accelerometer to a full scale C-arm with a webcam as an alternative to X-ray imaging for this feasibility research. Ground-truth C-arm poses were obtained from the webcam that tracked a checkerboard plate. From these we constructed a series of angle and structural correction equations that can properly relate the accelerometer angle readings to C-arm pose during surgery and compensate for systematic structural C-arm deformations, such as sagging and bending. RESULTS: Real-time tracking of the primary and secondary angle rotations of the C-arm showed an accuracy and precision of less than 0.5 degrees in the entire range of interest.

Original languageEnglish (US)
Title of host publicationMedical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention
Pages424-431
Number of pages8
Volume13
EditionPt 3
StatePublished - 2010
Externally publishedYes

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Reading
Joints
X-Rays
Research

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Grzeda, V., & Fichtinger, G. (2010). Rotational encoding of C-arm fluoroscope with tilt sensing accelerometer. In Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention (Pt 3 ed., Vol. 13, pp. 424-431)

Rotational encoding of C-arm fluoroscope with tilt sensing accelerometer. / Grzeda, Victor; Fichtinger, Gabor.

Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Vol. 13 Pt 3. ed. 2010. p. 424-431.

Research output: Chapter in Book/Report/Conference proceedingChapter

Grzeda, V & Fichtinger, G 2010, Rotational encoding of C-arm fluoroscope with tilt sensing accelerometer. in Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Pt 3 edn, vol. 13, pp. 424-431.
Grzeda V, Fichtinger G. Rotational encoding of C-arm fluoroscope with tilt sensing accelerometer. In Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Pt 3 ed. Vol. 13. 2010. p. 424-431
Grzeda, Victor ; Fichtinger, Gabor. / Rotational encoding of C-arm fluoroscope with tilt sensing accelerometer. Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Vol. 13 Pt 3. ed. 2010. pp. 424-431
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