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Image assessment of MSCT and CBCT scans for rapid maxillary expansion: a pilot study

Author

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  • Pollyana Moura
  • Gilson Giraldi
  • Pedro Lira
  • Diego Leite
  • Paulo Rodrigues
  • Marcelo Faria
  • Bianca Gutfilen

Abstract

Objectives: The accuracy of cone-beam technique, cone-beam computed tomography (CBCT), compared with that of the multislice spiral CT (MSCT), for image-based linear measurements of midpalatal suture was assessed.Material and Methods: Two measurements were performed by one investigator on the dry skull by using one digital caliper and in the axial cuts by using software. A 2D object-based image registration process was applied to determine the best affine transformation that maps a 2D input image (CBCT) in a reference image (MSCT).Results: The value of the intraclass correlation coefficient was approximately 0.9%. The results suggest that differences between two scanners did not exist (observation 1, p = 0.964 and observation 2, p = 0.795). With regard to the dry skull and the image, the significance probabilities equaled zero (observation 1, p = 0.002 and observation 2, p = 0.004), therefore, indicating significant differences.Conclusion: Measurements acquired in the images were similar and these findings contribute to stimulate the use of CBCT for evaluation of the maxillary expansion procedure.

Suggested Citation

  • Pollyana Moura & Gilson Giraldi & Pedro Lira & Diego Leite & Paulo Rodrigues & Marcelo Faria & Bianca Gutfilen, 2011. "Image assessment of MSCT and CBCT scans for rapid maxillary expansion: a pilot study," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 14(12), pages 1089-1095.
    • Handle: RePEc:taf:gcmbxx:v:14:y:2011:i:12:p:1089-1095
    DOI: 10.1080/10255842.2010.511618
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