Imaging Science in Dentistry

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
권호 표지
DOI QR코드

DOI QR Code

Effect of slice inclination and object position within the field of view on the measurement accuracy of potential implant sites on cone-beam computed tomography

  • Saberi, Bardia Vadiati (Dental Sciences Research Center, Department of Periodontics, School of Dentistry, Guilan University of Medical Sciences) ;
  • Khosravifard, Negar (Dental Sciences Research Center, Department of Maxillofacial Radiology, School of Dentistry, Guilan University of Medical Sciences) ;
  • Nourzadeh, Alireza (Department of Maxillofacial Radiology, School of Dentistry, Guilan University of Medical Sciences)
  • Received : 2019.08.07
  • Accepted : 2019.11.20
  • Published : 2020.03.31
Download PDF
⟨ Previous Next ⟩

Abstract

Purpose: The purpose of this study was to evaluate the accuracy of linear measurements in the horizontal and vertical dimensions based on object position and slice inclination in cone-beam computed tomography (CBCT) images. Materials and Methods: Ten dry sheep hemi-mandibles, each with 4 sites (incisor, canine, premolar, and molar), were evaluated when either centrally or peripherally positioned within the field of view (FOV) with the image slices subjected to either oblique or orthogonal inclinations. Four types of images were created of each region: central/cross-sectional, central/coronal, peripheral/cross-sectional, and peripheral/coronal. The horizontal and vertical dimensions were measured for each region of each image type. Direct measurements of each region were obtained using a digital caliper in both horizontal and vertical dimensions. CBCT and direct measurements were compared using the Bland-Altman plot method. P values <0.05 were considered to indicate statistical significance. Results: The buccolingual dimension of the incisor and premolar areas and the height of the incisor, canine, and molar areas showed statistically significant differences on the peripheral/coronal images compared to the direct measurements (P<0.05). Molar area height in the central/coronal slices also differed significantly from the direct measurements (P<0.05). Cross-sectional images of either the central or peripheral position had no marked difference from the gold-standard values, indicating sufficient accuracy. Conclusion: Peripheral object positioning within the FOV in combination with applying an orthogonal inclination to the slices resulted in significant inaccuracies in the horizontal and vertical measurements. The most undesirable effect was observed in the molar area and the vertical dimension.

Keywords

References

  1. Lascala CA, Panella J, Marques MM. Analysis of the accuracy of linear measurements obtained by cone beam computed tomography (CBCT-NewTom). Dentomaxillofac Radiol 2004; 33: 291-4. https://doi.org/10.1259/dmfr/25500850
  2. Kosalagood P, Silkosessak OC, Pittayapat P, Pisarnturakit P, Pauwels R, Jacobs R. Linear measurement accuracy of eight cone beam computed tomography scanners. Clin Implant Dent Relat Res 2015; 17: 1217-27. https://doi.org/10.1111/cid.12221
  3. Hassan B, van der Stelt P, Sanderink G. Accuracy of three-dimensional measurements obtained from cone beam computed tomography surface-rendered images for cephalometric analysis: influence of patient scanning position. Eur J Orthod 2009; 31: 129-34. https://doi.org/10.1093/ejo/cjn088
  4. Timock AM, Cook V, McDonald T, Leo MC, Crowe J, Benninger BL, et al. Accuracy and reliability of buccal bone height and thickness measurements from cone-beam computed tomography imaging. Am J Orthod Dentofacial Orthop 2011; 140: 734-44. https://doi.org/10.1016/j.ajodo.2011.06.021
  5. Mah J, Hatcher D. Three-dimensional craniofacial imaging. Am J Orthod Dentofacial Orthop 2004; 126: 308-9. https://doi.org/10.1016/j.ajodo.2004.06.024
  6. Kobayashi K, Shimoda S, Nakagawa Y, Yamamoto A. Accuracy in measurement of distance using limited cone-beam computerized tomography. Int J Oral Maxillofac Implants 2004; 19: 228-31.
  7. Frei C, Buser D, Dula K. Study on the necessity for cross-section imaging of the posterior mandible for treatment planning of standard cases in implant dentistry. Clin Oral Implants Res 2004; 15: 490-7. https://doi.org/10.1111/j.1600-0501.2004.01032.x
  8. Ludlow JB, Laster WS, See M, Bailey LJ, Hershey HG. Accuracy of measurements of mandibular anatomy in cone beam computed tomography images. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2007; 103: 534-42. https://doi.org/10.1016/j.tripleo.2006.04.008
  9. Sabban H, Mahdian M, Dhingra A, Lurie AG, Tadinada A. Evaluation of linear measurements of implant sites based on head orientation during acquisition: an ex vivo study using cone-beam computed tomography. Imaging Sci Dent 2015; 45: 73-80. https://doi.org/10.5624/isd.2015.45.2.73
  10. Neves FS, Vasconcelos TV, Oenning AC, de Azevedo-Vaz SL, de Almeida SM, Freitas DQ. Oblique or orthoradial CBCT slices for preoperative implant planning: which one is more accurate? Braz J Oral Sci 2014; 13: 104-8. https://doi.org/10.1590/1677-3225v13n2a05
  11. Visconti MA, Verner FS, Assis NM, Devito KL. Influence of maxillomandibular positioning in cone beam computed tomography for implant planning. Int J Oral Maxillofac Surg 2013; 42: 880-6. https://doi.org/10.1016/j.ijom.2013.03.001
  12. Shokri A, Khajeh S. In vitro comparison of the effect of different slice thicknesses on the accuracy of linear measurements on cone beam computed tomography images in implant sites. J Craniofac Surg 2015; 26: 157-60. https://doi.org/10.1097/SCS.0000000000001031
  13. Nikbin A, Dalili Kajan Z, Taramsari M, Khosravifard N. Effect of object position in the field of view and application of a metal artifact reduction algorithm on the detection of vertical root fractures on cone-beam computed tomography scans: an in vitro study. Imaging Sci Dent 2018; 48: 245-54. https://doi.org/10.5624/isd.2018.48.4.245
  14. Alkhader M, Hudieb M, Jarab F, Shaweesh A. The visibility of mandibular canal on orthoradial and oblique CBCT slices at molar implant sites. Biotechnol Biotechnol Equip 2016; 30: 770-6. https://doi.org/10.1080/13102818.2016.1166349
  15. Kamburoglu K, Murat S, Kilic C, Yuksel S, Avsever H, Farman A, et al. Accuracy of CBCT images in the assessment of buccal marginal alveolar peri-implant defects: effect of field of view. Dentomaxillofac Radiol 2014; 43: 20130332. https://doi.org/10.1259/dmfr.20130332
  16. Dawood A, Brown J, Sauret-Jackson V, Purkayastha S. Optimization of cone beam CT exposure for pre-surgical evaluation of the implant site. Dentomaxillofac Radiol 2012; 41: 70-4. https://doi.org/10.1259/dmfr/16421849
  17. Moreira CR, Sales MA, Lopes PM, Cavalcanti MG. Assessment of linear and angular measurements on three-dimensional cone-beam computed tomographic images. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2009; 108: 430-6. https://doi.org/10.1016/j.tripleo.2009.01.032
  18. Frongia G, Piancino MG, Bracco P. Cone-beam computed tomography: accuracy of three-dimensional cephalometry analysis and influence of patient scanning position. J Craniofac Surg 2012; 23: 1038-43. https://doi.org/10.1097/SCS.0b013e318252d5e1
  19. Rokn AR, Hashemi K, Akbari S, Kharazifard MJ, Barikani H, Panjnoosh M. Accuracy of linear measurements using cone beam computed tomography in comparison with clinical measurements. J Dent (Tehran) 2016; 13: 333-9.
  20. Moshfeghi M, Tavakoli MA, Hosseini ET, Hosseini AT, Hosseini IT. Analysis of linear measurement accuracy obtained by cone beam computed tomography (CBCT- NewTom VG). Dent Res J (Isfahan) 2012; 9 (Suppl 1): S57-62.