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17 October 2022 Practical workflow for arbitrary non-circular orbits for CT with clinical robotic C-arms
Yiqun Q. Ma, Grace J. Gang, Tess Reynolds, Tina Ehitiati, Junyuan Li, Owen Dillon, Tom Russ, Wenying Wang, Clifford Weiss, Nicholas Theodore, Kelvin Hong, Ricky O’Brien, Jeffrey Siewerdsen, J. Webster Stayman
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Proceedings Volume 12304, 7th International Conference on Image Formation in X-Ray Computed Tomography; 123042H (2022) https://doi.org/10.1117/12.2647158
Event: Seventh International Conference on Image Formation in X-Ray Computed Tomography (ICIFXCT 2022), 2022, Baltimore, United States
Abstract
Non-circular orbits in cone-beam CT (CBCT) imaging are increasingly being studied for potential benefits in field-of-view, dose reduction, improved image quality, minimal interference in guided procedures, metal artifact reduction, and more. While modern imaging systems such as robotic C-arms are enabling more freedom in potential orbit designs, practical implementation on such clinical systems remains challenging due to obstacles in critical stages of the workflow, including orbit realization, geometric calibration, and reconstruction. In this work, we build upon previous successes in clinical implementation and address key challenges in the geometric calibration stage with a novel calibration method. The resulting workflow eliminates the need for prior patient scans or dedicated calibration phantoms, and can be conducted in clinically relevant processing times.
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Yiqun Q. Ma, Grace J. Gang, Tess Reynolds, Tina Ehitiati, Junyuan Li, Owen Dillon, Tom Russ, Wenying Wang, Clifford Weiss, Nicholas Theodore, Kelvin Hong, Ricky O’Brien, Jeffrey Siewerdsen, and J. Webster Stayman "Practical workflow for arbitrary non-circular orbits for CT with clinical robotic C-arms", Proc. SPIE 12304, 7th International Conference on Image Formation in X-Ray Computed Tomography, 123042H (17 October 2022); https://doi.org/10.1117/12.2647158
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KEYWORDS
Calibration
Robotics
Image quality
Imaging systems
Spine
Data acquisition
Reconstruction algorithms
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