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AUTHORS: A Al-Okshi ¹ , M Nilsson ¹ , A Petersson ¹´² , M Wiese ² and C Lindh ¹

Using Gafchromic Film to Estimate The Effective Dose from Dental Cone Beam CT a nd Panoramic Radiography. AUTHORS: A Al-Okshi ¹ , M Nilsson ¹ , A Petersson ¹´² , M Wiese ² and C Lindh ¹

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AUTHORS: A Al-Okshi ¹ , M Nilsson ¹ , A Petersson ¹´² , M Wiese ² and C Lindh ¹

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  1. Using Gafchromic Film to Estimate The Effective Dose from Dental Cone Beam CT and Panoramic Radiography

  2. AUTHORS: A Al-Okshi ¹, M Nilsson ¹ , A Petersson ¹´² , M Wiese ² and C Lindh ¹ 1. Department of Oral & Maxillofacial Radiology, Faculty of Odontology, Malmö University, Malmö, Sweden 2. Department of Radiology, Department of Odontology, University of Copenhagen, Copenhagen,Denmark

  3. BACKGROUND Dramatic Advances In Dental Imaging Technology Resolution of the detectors. Reconstruction software. Substantial Increase In The Use Of Imaging ↑ health care costs ↑ per capita exposure

  4. 4X 6X Suomalainen, Anni, et al. "Availability of CBCT and iatrogenic alveolar nerve injuries." Acta Odontologica Scandinavica 0 (2012): 1-6.

  5. In order to assess the risk from these imaging , • we must try to estimate the effective dose

  6. AIM: Demonstrate the feasibility of GafChromic film as dosimeter for use in rotating dental radiography and apply this technique for estimation of the effective doses from three CBCT units and three panoramic units.

  7. Problem with rotating irradiation geometry ...

  8. MATERIALS & METHODS CBCT Units • Veraviewepocs 3De • Upper jaw impacted canine • region. (4x4) • Lower jaw molar region. (4x4) • ProMax 3D • Upper jaw impacted canine • region. (4x5) • NewTom VGi • TMJ (8x8 – Normal resolution) • TMJ (8x8 – High resolution) • TMJ (12x8 – Normal resolution)

  9. MATERIALS & METHODS Panoramic Units • Veraviewepocs 3De • Standard – panoramic view • ProMax 3D • Standard –panoramic view • ProMax – (PSP) • Standard-panoramic view

  10. MATERIALS & METHODS RANDO® Phantom

  11. MATERIALS & METHODS GafChromic film XR-QA2

  12. MATERIALS & METHODS GafChromic film XR-QA2

  13. MATERIALS & METHODS • GafChromic film XR-QA2 • Dose calibration of GafChromic® film

  14. MATERIALS & METHODS Film scanning & Dose estimation

  15. MATERIALS & METHODS Film scanning & Dose estimation

  16. MATERIALS & METHODS For risk assessment, we now have to estimate the Effective dose ( E )

  17. THANK YOU .....!

  18. ACKNOWLEDGEMENT • I wish to express my gratitude to Professor • Christina Lindh • my main supervisor for supporting me from the beginning, inspiring me and introducing me to scientific research and for sharing her great knowledge and experience with me. This thesis would have been impossible to accomplish without her.

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