The Effect of Slice Thickness on the Volume Estimations Performed by Using Cone Beam CT

Yıl 2018, Cilt: 21 Sayı: 3, 167 - 172, 17.10.2018

Seval Bayrak Omer Said Sezgin Saadettin Kayıpmaz Gamze Çan

https://doi.org/10.7126/cumudj.406394

Öz

Objective: The purpose of this
study is to investigate possible effects of the slice thickness on volume
estimations with CBCT.

 

Materials
and Methods: Intraosseous cavities representing bone defects on femoral
condyles of bovines were scanned by CBCT. Consecutive slices at 0.1 mm, 0.2 mm,
0.3 mm, 0.4 mm, 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, and 5 mm thickness were used to
estimate the volumes of the cavities using Cavalieri principle of stereological
methods then compared with the volumes obtained by Archimedean principle.

 

Results: The volumes estimated
by Cavalieri principle in 0.1, 0.2, and 0.3 mm thickness slices were consistent
with the volumes obtained by Archimedean principle (p>0.05). For all the
defects on the CBCT images, the volumes of the defects which were calculated
with Cavalieri principle in 0.1, 0.2, and 0.3mm slice thickness were found to
be consistent with the actual volumes, however, the volumes that were
calculated in 0.4 mm, 0.5 mm, 1 mm, 2 mm, 3 mm, 4mm, and 5 mm slice thickness
were found to differ from the actual volumes.

 

Conclusion:
When
volume calculations were made by Cavalieri principle, the thinnest slice section
should be chosen to make calculations consistent with actual volumes.

 

Anahtar Kelimeler

Radiography, Dental, Cone Beam Computed Tomography, Quantitative Evaluation

Kaynakça

• 1. Farman AG SW. The Basics of Maxillofacial Cone Beam Computed Tomography. Seminars in Orthodontics 2009;15:2-13.2. Scarfe WC, Farman AG. What is cone-beam CT and how does it work? Dent Clin North Am 2008;52:707-730, v.3. Arnheiter C SW, Farman AG. Trends in maxillofacial cone-beam computed tomograhy usage. Oral Radiology 2006;22:80-85.4. Scarfe WC, Farman AG, Sukovic P. Clinical applications of cone-beam computed tomography in dental practice. J Can Dent Assoc 2006;72:75-80.5. Haney E, Gansky SA, Lee JS, Johnson E, Maki K, Miller AJ, et al. Comparative analysis of traditional radiographs and cone-beam computed tomography volumetric images in the diagnosis and treatment planning of maxillary impacted canines. Am J Orthod Dentofacial Orthop 2010;137:590-597.6. White SC, Pharoah MJ. The evolution and application of dental maxillofacial imaging modalities. Dent Clin North Am 2008;52:689-705, v.7. Scarfe WC, Levin MD, Gane D, Farman AG. Use of cone beam computed tomography in endodontics. Int J Dent 2009;2009:634567.8. Kayipmaz S, Sezgin OS, Saricaoglu ST, Bas O, Sahin B, Kucuk M. The estimation of the volume of sheep mandibular defects using cone-beam computed tomography images and a stereological method. Dentomaxillofac Radiol 2011;40:165-169.9. Bayram M, Kayipmaz S, Sezgin OS, Kucuk M. Volumetric analysis of the mandibular condyle using cone beam computed tomography. Eur J Radiol 2012;81:1812-1816.10. Sezgin OS KS, Sahin B. The effect of slice thickness on the assesment of bone defect volumes by cavalieri principle using cone beam conputed tomography. J Digit Imaging 2012;26:115-118.11. Agbaje JO, Jacobs R, Maes F, Michiels K, van Steenberghe D. Volumetric analysis of extraction sockets using cone beam computed tomography: a pilot study on ex vivo jaw bone. J Clin Periodontol 2007;34:985-990.12. Esposito SA, Huybrechts B, Slagmolen P, Cotti E, Coucke W, Pauwels R, et al. A novel method to estimate the volume of bone defects using cone-beam computed tomography: an in vitro study. J Endod 2013;39:1111-1115.13. Sahin B, Ergur H. Assessment of the optimum section thickness for the estimation of liver volume using magnetic resonance images: a stereological gold standard study. Eur J Radiol 2006;57:96-101.14. Emirzeoglu M, Sahin B, Selcuk MB, Kaplan S. The effects of section thickness on the estimation of liver volume by the Cavalieri principle using computed tomography images. Eur J Radiol 2005;56:391-397.15. Odaci E, Sahin B, Sonmez OF, Kaplan S, Bas O, Bilgic S, et al. Rapid estimation of the vertebral body volume: a combination of the Cavalieri principle and computed tomography images. Eur J Radiol 2003;48:316-326.16. Bilgic S, Sahin B, Sonmez OF, Odaci E, Colakoglu S, Kaplan S, et al. A new approach for the estimation of intervertebral disc volume using the Cavalieri principle and computed tomography images. Clin Neurol Neurosurg 2005;107:282-288.17. Petersson A. What you can and cannot see in TMJ imaging--an overview related to the RDC/TMD diagnostic system. J Oral Rehabil 2010;37:771-778.18. Sahin B, Emirzeoglu M, Uzun A, Incesu L, Bek Y, Bilgic S, et al. Unbiased estimation of the liver volume by the Cavalieri principle using magnetic resonance images. Eur J Radiol 2003;47:164-170.