Image quality of two different mobile cone beam computed tomographs for maxillofacial surgery

Journal of Cranio-maxillo-facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery
Robin SeebergerJuergen Hoffmann

Abstract

We evaluated two mobile cone beam computed tomographs (mCBCT) comparing image quality with respect to radiation dosage. Image quality was analyzed by using different scanning modes. The skulls of three human cadavers were scanned by use of conventional Computed Tomography (CT) as well as with two mobile cone beam computed tomographs (Siemens Arcadis Orbic 3D and Ziehm Vision Vario 3D). Six different acquisition modes with different radiation dosages were used. The axial views of all scans were evaluated by five medical doctors regarding image quality by identifying predefined anatomical structures of the skull. A five-point ranking scale was used. The inter-rater reliability was statistically depicted by Cohen's Kappa coefficient. A Wilcoxon signed rank test was used to evaluate the rater's results. For evaluating the signal-to-noise ratio (SNR) a Catphan 600 reference body with two different inlays was used. Comparing the mCBCTs, the image quality of the Siemens Arcadis Orbic 3D in high-dosage mode received the best score (median: 2.27). The inter-rater reliability was fair (Kappa=-0.030 to 0.328). The Wilcoxon test showed significant (p<0.05) different median rating values in 18 out of 21 imaging modes. The SNR was higher (be...Continue Reading

References

Feb 8, 2005·Journal of Cranio-maxillo-facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery·Dirk SchulzeRainer Schmelzle
Aug 2, 2005·International Journal of Oral and Maxillofacial Surgery·M HeilandR Schmelzle
Sep 29, 2007·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Max HeilandDirk Schulze
Oct 9, 2007·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Oana Bida HoneyAllan G Farman
Sep 2, 2008·Dento Maxillo Facial Radiology·M LoubeleP Suetens
Aug 3, 2010·Journal of Cranio-maxillo-facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery·J KlattP Pohlenz
Jun 17, 2011·Computer Aided Surgery : Official Journal of the International Society for Computer Aided Surgery·Andrej Terzic, Paolo Scolozzi

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Citations

Jan 15, 2014·Journal of Cranio-maxillo-facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery·Wei LiuLai Gui
Jan 15, 2013·Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology·Robin SeebergerMichael Engel

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