ArticleJournal of applied clinical medical physics2012
Image intensifier distortion correction for fluoroscopic RSA: the need for independent accuracy assessment.
Article in Journal of applied clinical medical physics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
6 citing papers in PubMed.
- Article
- Toward an End-to-End Calibration for Mobile C-Arm in Combination with a Depth Sensor for Surgical Augmented Reality Applications.Sensors (Basel, Switzerland) · 2019Article
- Intra-operative fiducial-based CT/fluoroscope image registration framework for image-guided robot-assisted joint fracture surgery.International journal of computer assisted radiology and surgery · 2017Article
- Geometric calibration and correction for a lens-coupled detector in x-ray phase-contrast imaging.Journal of medical imaging (Bellingham, Wash.) · 2017Article
- Multimodality calibration for simultaneous fluoroscopic and nuclear imaging.EJNMMI physics · 2016Article
- Precise 3D/2D calibration between a RGB-D sensor and a C-arm fluoroscope.International journal of computer assisted radiology and surgery · 2016Article
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Fluoroscopic images suffer from multiple modes of image distortion. Therefore, the purpose of this study was to compare the effects of correction using a range of two-dimensional polynomials and a global approach. The primary measure of interest was the average error in the distances between four beads of an accuracy phantom, as measured using RSA. Secondary measures of interest were the root mean squared errors of the fit of the chosen polynomial to the grid of beads used for correction, and the errors in the corrected distances between the points of the grid in a second position. Based upon the two-dimensional measures, a polynomial of order three in the axis of correction and two in the perpendicular axis was preferred. However, based upon the RSA reconstruction, a polynomial of order three in the axis of correction and one in the perpendicular axis was preferred. The use of a calibration frame for these three-dimensional applications most likely tempers the effects of distortion. This study suggests that distortion correction should be validated for each of its applications with an independent "gold standard" phantom.
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Registered trials
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