Imaging Science in Dentistry

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

DOI QR Code

Positioning errors and quality assessment in panoramic radiography

  • Dhillon, Manu (Department of Oral Medicine and Radiology, ITS Centre for Dental Studies and Research) ;
  • Raju, Srinivasa M. (Department of Oral Medicine and Radiology, Teerthanker Mahavir Dental College) ;
  • Verma, Sankalp (Department of Oral Medicine and Radiology, Kothiwal Dental College and Research Centre) ;
  • Tomar, Divya (Department of Pedodontics and Preventive Dentistry, IDST Dental College and Research Centre) ;
  • Mohan, Raviprakash S. (Department of Oral Medicine and Radiology, Kothiwal Dental College and Research Centre) ;
  • Lakhanpal, Manisha (Department of Oral Medicine and Radiology, ITS Centre for Dental Studies and Research) ;
  • Krishnamoorthy, Bhuvana (Department of Oral Medicine and Radiology, ITS Centre for Dental Studies and Research)
  • Received : 2012.03.12
  • Accepted : 2012.05.18
  • Published : 2012.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

Purpose: This study was performed to determine the relative frequency of positioning errors, to identify those errors directly responsible for diagnostically inadequate images, and to assess the quality of panoramic radiographs in a sample of records collected from a dental college. Materials and Methods: This study consisted of 1,782 panoramic radiographs obtained from the Department of Oral and Maxillofacial Radiology. The positioning errors of the radiographs were assessed and categorized into nine groups: the chin tipped high, chin tipped low, a slumped position, the patient positioned forward, the patient positioned backward, failure to position the tongue against the palate, patient movement during exposure, the head tilted, and the head turned to one side. The quality of the radiographs was further judged as being 'excellent', 'diagnostically acceptable', or 'unacceptable'. Results: Out of 1,782 radiographs, 196 (11%) were error free and 1,586 (89%) were present with positioning errors. The most common error observed was the failure to position the tongue against the palate (55.7%) and the least commonly experienced error was patient movement during exposure (1.6%). Only 11% of the radiographs were excellent, 64.1% were diagnostically acceptable, and 24.9% were unacceptable. Conclusion: The positioning errors found on panoramic radiographs were relatively common in our study. The quality of panoramic radiographs could be improved by careful attention to patient positioning.

Keywords

References

  1. Horner K. Review article: radiation protection in dental radiology. Br J Radiol 1994; 67 : 1041-9. https://doi.org/10.1259/0007-1285-67-803-1041
  2. Brezden NA, Brooks SL. Evaluation of panoramic dental radiographs taken in private practice. Oral Surg Oral Med Oral Pathol 1987; 63 : 617-21. https://doi.org/10.1016/0030-4220(87)90240-4
  3. Eliasson S, Lavstedt S, Wouters F, Ostlin L. Quality of intraoral radiographs sent by private dental practitioners for therapy evaluation by the Social Insurance Office. Swed Dent J 1990; 14 : 81-9.
  4. Akesson L, Hakansson J, Rohlin M, Zoger B. An evaluation of image quality for the assessment of the marginal bone level in panoramic radiography. A comparison of radiographs from different dental clinics. Swed Dent J 1993; 17 : 9-21.
  5. Svenson B, Eriksson T, Kronstrom M, Palmqvist S. Image quality of intraoral radiographs used by general practitioners in prosthodontic treatment planning. Dentomaxillofac Radiol 1994; 23 : 46-8. https://doi.org/10.1259/dmfr.23.1.8181659
  6. Svenson B, Eriksson T, Kronström M, Palmqvist S. Quality of intraoral radiographs used for prosthodontic treatment planning by general dentists in the public dental health service. Swed Dent J 1995; 19 : 47-54.
  7. Rushton VE, Horner K, Worthington HV. The quality of panoramic radiographs in a sample of general dental practices. Br Dent J 1999; 186 : 630-3.
  8. Helminen SE, Vehkalahti M, Wolf J, Murtomaa H. Quality evaluation of young adults' radiographs in Finnish public oral health service. J Dent 2000; 28 : 549-55. https://doi.org/10.1016/S0300-5712(00)00047-6
  9. Langland OE, Sippy FH, Morris CR, Langlais RP. Principles and practice of panoramic radiology. 2nd ed. Philadelphia: WB Saunders; 1992.
  10. White SC, Pharaoh MJ. Oral Radiology: principles and interpretation. 5th ed. Philadelphia: CV Mosby; 2004. p. 200-17.
  11. Pitts NB, Kidd EA. Some of the factors to be considered in the prescription and timing of bitewing radiography in the diagnosis and management of dental caries. J Dent 1992; 20 : 74-84. https://doi.org/10.1016/0300-5712(92)90106-M
  12. Royal College of Radiologists, National Radiological Protection Board. Guidelines on radiology standards for primary dental care. London: NRPB; 1994. p. 30.
  13. Frederiksen NL, Benson BW, Sokolowski TW. Effective dose and risk assessment from film tomography used for dental implant diagnostics. Dentomaxillofac Radiol 1994; 23 : 123-7.
  14. Nixon PP, Thorogood J, Holloway J, Smith NJ. An audit of film reject and repeat rates in a department of dental radiology. Br J Radiol 1995; 68 : 1304-7. https://doi.org/10.1259/0007-1285-68-816-1304
  15. Choi BR, Choi DH, Huh KH, Yi WJ, Heo MS, Choi SC, et al. Clinical image quality evaluation for panoramic radiography in Korean dental clinics. Imaging Sci Dent 2012; 42 : 183-90. https://doi.org/10.5624/isd.2012.42.3.183
  16. McDavid WD, Langlais RP, Welander U, Morris CR. Real, double, and ghost images in rotational panoramic radiography. Dentomaxillofac Radiol 1983; 12 : 122-8. https://doi.org/10.1259/dmfr.1983.0020
  17. Rushton VE, Horner K. The use of panoramic radiology in dental practice. J Dent 1996; 24 : 185-201. https://doi.org/10.1016/0300-5712(95)00055-0
  18. Cohen J. A coefficient of agreement for nominal scales. Educ Psychol Meas 1960; 20 : 37-46. https://doi.org/10.1177/001316446002000104
  19. Altman DG. Practical statistics for medical research. London: Chapman and Hall; 1990.
  20. Akarslan ZZ, Erten H, Gungor K, Celik I. Common errors on panoramic radiographs taken in a dental school. J Contemp Dent Pract 2003; 4 : 24-34.
  21. Rushton VE, Horner K, Worthington HV. Aspects of panoramic radiography in general dental practice. Br Dent J 1999; 186: 342-4.

Cited by

  1. 파노라마방사선사진에서 환자의 머리 위치가 하악 수직, 수평 확대율에 미치는 영향: 상하 및 좌우회전 vol.30, pp.1, 2012, https://doi.org/10.14368/jdras.2014.30.1.1
  2. Assessment of panoral radiograph quality in a dental treatment center vol.6, pp.2, 2016, https://doi.org/10.4103/2321-1407.177960
  3. Dentists’ use of digital radiographic techniques: Part II - extraoral radiography: a questionnaire study of Swedish dentists vol.77, pp.2, 2012, https://doi.org/10.1080/00016357.2018.1525763
  4. Custom Focal Trough in Cone-Beam Computed Tomography Reformatted Panoramic Versus Digital Panoramic for Mental Foramen Position to Aid Implant Planning vol.10, pp.None, 2012, https://doi.org/10.25259/jcis_150_2019
  5. Prediction of maxillary canine impaction based on panoramic radiographs vol.6, pp.1, 2020, https://doi.org/10.1002/cre2.246
  6. Effects of scanning parameters reduction in dental radiographs on image quality and diagnostic performance: A randomised controlled trial vol.48, pp.1, 2012, https://doi.org/10.1177/1465312520971641
  7. Basic Knowledge and New Advances in Panoramic Radiography Imaging Techniques: A Narrative Review on What Dentists and Radiologists Should Know vol.11, pp.17, 2021, https://doi.org/10.3390/app11177858