ArticlePhysics in medicine and biology2016
Self-calibration of cone-beam CT geometry using 3D-2D image registration.
Article in Physics in medicine and biology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.
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Who cites it
40 citing papers in PubMed.
- Differentiable Forward and Back-Projector for Rigid Motion Estimation in X-Ray Imaging.IEEE transactions on bio-medical engineering · 2026Article
- Phantom-Free Geometric Refinement for Industrial CBCT Using Physical Constraints and a Normalized Low-Rank Projection Prior.Sensors (Basel, Switzerland) · 2026Article
- A synergistic framework for geometric calibration and reconstruction in dual-arm robotic cone-beam computed tomography.Medical physics · 2026Article
- Forward and Back Projectors for Gradient-based Rigid Motion Estimation in X-ray Imaging.Proceedings of SPIE--the International Society for Optical Engineering · 2026Article
- Joint Cone-Beam CT Reconstruction and Rigid Motion Compensation Using A Differentiable Projector.Proceedings of SPIE--the International Society for Optical Engineering · 2026Article
- RoboCT: The State and Current Challenges of Industrial Twin Robotic CT Systems.Sensors (Basel, Switzerland) · 2025Review
- Source-detector trajectory optimization for CBCT metal artifact reduction based on PICCS reconstruction.Zeitschrift fur medizinische Physik · 2024Article
- Universal non-circular cone beam CT orbits for metal artifact reduction imaging during image-guided procedures.Scientific reports · 2024Article
- Cone-beam CT with a noncircular (sine-on-sphere) orbit: imaging performance of a clinical system for image-guided interventions.Journal of medical imaging (Bellingham, Wash.) · 2024Article
- Fully automatic online geometric calibration for non-circular cone-beam CT orbits using fiducials with unknown placement.Medical physics · 2024Article
- [A method for sensitivity analysis of deviation factor for geometric correction of cone-beam CT system].Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2023Article
- Technical note: Extended longitudinal and lateral 3D imaging with a continuous dual-isocenter CBCT scan.Medical physics · 2023Article
- Revealing pelvic structures in the presence of metal hip prothesis via non-circular CBCT orbits.Proceedings of SPIE--the International Society for Optical Engineering · 2023Article
- Online geometry calibration for retrofit computed tomography from a mouse rotation system and a small-animal imager.Medical physics · 2023Article
- Feature-based CBCT self-calibration for arbitrary trajectories.International journal of computer assisted radiology and surgery · 2022Article
- Practical workflow for arbitrary non-circular orbits for CT with clinical robotic C-arms.Proceedings of SPIE--the International Society for Optical Engineering · 2022Article
- Universal orbit design for metal artifact elimination.Physics in medicine and biology · 2022Article
- Deformable 3D-2D registration for high-precision guidance and verification of neuroelectrode placement.Physics in medicine and biology · 2021Article
- [Free trajectory cone beam computed tomography reconstruction method for synchronous scanning of geometric calibration phantom and imaging object].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2021Article
- A level-wise spine registration framework to account for large pose changes.International journal of computer assisted radiology and surgery · 2021Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
Robotic C-arms are capable of complex orbits that can increase field of view, reduce artifacts, improve image quality, and/or reduce dose; however, it can be challenging to obtain accurate, reproducible geometric calibration required for image reconstruction for such complex orbits. This work presents a method for geometric calibration for an arbitrary source-detector orbit by registering 2D projection data to a previously acquired 3D image. It also yields a method by which calibration of simple circular orbits can be improved. The registration uses a normalized gradient information similarity metric and the covariance matrix adaptation-evolution strategy optimizer for robustness against local minima and changes in image content. The resulting transformation provides a 'self-calibration' of system geometry. The algorithm was tested in phantom studies using both a cone-beam CT (CBCT) test-bench and a robotic C-arm (Artis Zeego, Siemens Healthcare) for circular and non-circular orbits. Self-calibration performance was evaluated in terms of the full-width at half-maximum (FWHM) of the point spread function in CBCT reconstructions, the reprojection error (RPE) of steel ball bearings placed on each phantom, and the overall quality and presence of artifacts in CBCT images. In all cases, self-calibration improved the FWHM-e.g. on the CBCT bench, FWHM = 0.86 mm for conventional calibration compared to 0.65 mm for self-calibration (p < 0.001). Similar improvements were measured in RPE-e.g. on the robotic C-arm, RPE = 0.73 mm for conventional calibration compared to 0.55 mm for self-calibration (p < 0.001). Visible improvement was evident in CBCT reconstructions using self-calibration, particularly about high-contrast, high-frequency objects (e.g. temporal bone air cells and a surgical needle). The results indicate that self-calibration can improve even upon systems with presumably accurate geometric calibration and is applicable to situations where conventional calibration is not feasible, such as complex non-circular CBCT orbits and systems with irreproducible source-detector trajectory.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.