Video-guided calibration of an augmented reality mobile C-arm
Chen X, Naik H, Wang L, Navab N, Fallavollita P (2014)
Publication Type: Journal article
Publication year: 2014
Journal
Book Volume: 9
Pages Range: 987-996
Journal Issue: 6
DOI: 10.1007/s11548-014-0995-y
Abstract
Purpose: The augmented reality (AR) fluoroscope augments an X-ray image by video and provides the surgeon with a real-time in situ overlay of the anatomy. The overlay alignment is crucial for diagnostic and intra-operative guidance, so precise calibration of the AR fluoroscope is required. The first and most complex step of the calibration procedure is the determination of the X-ray source position. Currently, this is achieved using a biplane phantom with movable metallic rings on its top layer and fixed X-ray opaque markers on its bottom layer. The metallic rings must be moved to positions where at least two pairs of rings and markers are isocentric in the X-ray image. The current “trial and error” calibration process currently requires acquisition of many X-ray images, a task that is both time consuming and radiation intensive. An improved process was developed and tested for C-arm calibration.
Involved external institutions
Germany (DE)How to cite
APA:
Chen, X., Naik, H., Wang, L., Navab, N., & Fallavollita, P. (2014). Video-guided calibration of an augmented reality mobile C-arm. International Journal of Computer Assisted Radiology and Surgery, 9(6), 987-996. https://doi.org/10.1007/s11548-014-0995-y
MLA:
Chen, Xin, et al. "Video-guided calibration of an augmented reality mobile C-arm." International Journal of Computer Assisted Radiology and Surgery 9.6 (2014): 987-996.
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