Estimation of CT cone-beam geometry using a novel method insensitive to phantom fabrication inaccuracy: Implications for isocenter localization accuracy

Keyphrases

• Phantom 100%
• Isocenter 100%
• Cone-beam Geometry 100%
• Localization Accuracy 100%
• Fabrication Error 100%
• Beam Geometry 52%
• Cone-beam Computed Tomography 36%
• Fiducial Markers 26%
• Fiducial 21%
• Gantry Angle 21%
• Position Error 15%
• Geometry Estimation 15%
• Coordinate System 10%
• Gantry Rotation 10%
• Geometric Error 10%
• Misalignment 5%
• Imaging Systems 5%
• Positional Error 5%
• Positioning Accuracy 5%
• Oscillation 5%
• Adaptive Radiotherapy 5%
• Varian 5%
• Gantry 5%
• Estimation Algorithms 5%
• Cone-beam Computed Tomography Images 5%
• Mechanical Instability 5%
• Projected Image 5%
• Error-correcting 5%
• Geometry Characterization 5%
• Sinusoidal Oscillations 5%
• Image Discretization 5%
• On-board Imaging 5%
• Source-detector 5%
• Geometric Parameters 5%
• Detector Orientation 5%

Physics

• Tomography 100%
• Detectors 87%
• Position Error 37%