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PubMed · 12820854

A method for correction of radiographic errors in serial three-dimensional cephalometry.

M M Rousset·F Simonek·J P Dubus
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Abstract

OBJECTIVES: To improve the accuracy of location of anatomical structures in serial three-dimensional (3D) cephalometric radiography. METHODS: A new method was developed to correct for geometrical errors in the calculation of the 3D coordinates of a point viewed on any two of three frontal, lateral and axial cephalometric radiographs. A computer-based method was used to reduce measurement errors. The methods were tested on a phantom containing metallic markers and on a dried skull. RESULTS: The mean corrected geometric error was 0.43 mm (SD 0.25 mm) compared with a maximum of 8 mm (SD 0.2 mm) when calculated directly from the radiographs. The mean computer-based measurement error was 0.46 mm (SD 0.34 mm) compared with 1.38 mm (SD 0.74 mm) when made directly from the radiographs. CONCLUSIONS: The new method for the correction of radiographic errors in 3D serial cephalometric radiography appears to be sufficiently accurate to justify clinical evaluation.

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AlgorithmsCalibrationCephalometryDiagnostic ErrorsHumansImaging, Three-DimensionalMathematical ComputingPhantoms, ImagingRadiographic Image Interpretation, Computer-AssistedEvaluation StudyJournal Article

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BibTeXRIS

M M Rousset, F Simonek, J P Dubus. 2003. A method for correction of radiographic errors in serial three-dimensional cephalometry.. https://doi.org/10.1259/dmfr%2F51868734

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