Absorbed dose of sensitive organs in maxillofacial region by different radiographic techniques: Panoramic, Waters, Caldwell and cone-beam computed tomography
BACKGROUND AND AIM: Due to increasing use of X-rays in diagnosis and treatment of diseases, this study aimed to measure and compares the absorbed dose in a number of sensitive organs of head and neck in different radiographic techniques. METHODS: Thermoluminescence dosimeter (TLD) and a male equiva...
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doaj-f561879f839847648d22782c8e569efc2020-11-25T02:53:09ZengKerman University of Medical SciencesJournal of Oral Health and Oral Epidemiology2322-13722017-07-01631211291039Absorbed dose of sensitive organs in maxillofacial region by different radiographic techniques: Panoramic, Waters, Caldwell and cone-beam computed tomographySeyed Hosein Hoseini-Zarch0Mohammad Taghi Bahreyni1Fatemeh Akbari2Nasim Khaki3Mona Poorazad4Associate Professor, Dental Materials Research Center AND Department of Oral and Maxillofacial Radiology, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, IranProfessor, Medical Physics Research Center AND Department of Medical Physics, School of Medical Sciences, University of Mashhad, Mashhad, IranMedical Physics Research Center AND Department of Medical Physics, School of Medical Sciences, University of Mashhad, Mashhad, IranMSc Student, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, IranPrivate Practice, Mashhad, IranBACKGROUND AND AIM: Due to increasing use of X-rays in diagnosis and treatment of diseases, this study aimed to measure and compares the absorbed dose in a number of sensitive organs of head and neck in different radiographic techniques. METHODS: Thermoluminescence dosimeter (TLD) and a male equivalent RANDO phantom were used to measure the absorbed dose in organs. The dosimeters were set in certain sites of phantom related to eye, parotid, thyroid gland, occipital area and temporomandibular joint (TMJ). Panoramic and Caldwell techniques with two different exposure conditions as well as Waters technique with three different exposure conditions were performed. Cone-beam computed tomography (CBCT) was applied in low and normal resolutions with different field of view (FOV), and the mean absorbed dose was calculated and compared by the dosimeters related to each of the organs. RESULTS: The panoramic imaging technique revealed the lowest dose for the eyes, but interestingly higher doses for the parotid gland and the occipital area. In total, Waters and Caldwell imaging techniques indicated that the occipital area and the parotid gland absorbed a higher dose than other organs. In the majority of CBCT scans the parotid region received the highest dose. However, during sinus CBCT (both in low-dose and high-dose modes), the TMJ and eye areas absorbed the highest dose. Investigation of the use of thyroid shield on the absorbed dose in this organ in CBCT showed an average 22% reduction in dose. CONCLUSION: In total, panoramic, Waters and Caldwell imaging techniques indicated that the occipital area and the parotid gland absorbed a higher dose than other organs. In the majority of CBCT scans, the parotid region received the highest dose.http://johoe.kmu.ac.ir/index.php/johoe/article/view/221Radiation DosimetersAbsorptionRadiationCone-Beam Computed TomographyPanoramic Radiography |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Seyed Hosein Hoseini-Zarch Mohammad Taghi Bahreyni Fatemeh Akbari Nasim Khaki Mona Poorazad |
spellingShingle |
Seyed Hosein Hoseini-Zarch Mohammad Taghi Bahreyni Fatemeh Akbari Nasim Khaki Mona Poorazad Absorbed dose of sensitive organs in maxillofacial region by different radiographic techniques: Panoramic, Waters, Caldwell and cone-beam computed tomography Journal of Oral Health and Oral Epidemiology Radiation Dosimeters Absorption Radiation Cone-Beam Computed Tomography Panoramic Radiography |
author_facet |
Seyed Hosein Hoseini-Zarch Mohammad Taghi Bahreyni Fatemeh Akbari Nasim Khaki Mona Poorazad |
author_sort |
Seyed Hosein Hoseini-Zarch |
title |
Absorbed dose of sensitive organs in maxillofacial region by different radiographic techniques: Panoramic, Waters, Caldwell and cone-beam computed tomography |
title_short |
Absorbed dose of sensitive organs in maxillofacial region by different radiographic techniques: Panoramic, Waters, Caldwell and cone-beam computed tomography |
title_full |
Absorbed dose of sensitive organs in maxillofacial region by different radiographic techniques: Panoramic, Waters, Caldwell and cone-beam computed tomography |
title_fullStr |
Absorbed dose of sensitive organs in maxillofacial region by different radiographic techniques: Panoramic, Waters, Caldwell and cone-beam computed tomography |
title_full_unstemmed |
Absorbed dose of sensitive organs in maxillofacial region by different radiographic techniques: Panoramic, Waters, Caldwell and cone-beam computed tomography |
title_sort |
absorbed dose of sensitive organs in maxillofacial region by different radiographic techniques: panoramic, waters, caldwell and cone-beam computed tomography |
publisher |
Kerman University of Medical Sciences |
series |
Journal of Oral Health and Oral Epidemiology |
issn |
2322-1372 |
publishDate |
2017-07-01 |
description |
BACKGROUND AND AIM: Due to increasing use of X-rays in diagnosis and treatment of diseases, this study aimed to measure and compares the absorbed dose in a number of sensitive organs of head and neck in different radiographic techniques.
METHODS: Thermoluminescence dosimeter (TLD) and a male equivalent RANDO phantom were used to measure the absorbed dose in organs. The dosimeters were set in certain sites of phantom related to eye, parotid, thyroid gland, occipital area and temporomandibular joint (TMJ). Panoramic and Caldwell techniques with two different exposure conditions as well as Waters technique with three different exposure conditions were performed. Cone-beam computed tomography (CBCT) was applied in low and normal resolutions with different field of view (FOV), and the mean absorbed dose was calculated and compared by the dosimeters related to each of the organs.
RESULTS: The panoramic imaging technique revealed the lowest dose for the eyes, but interestingly higher doses for the parotid gland and the occipital area. In total, Waters and Caldwell imaging techniques indicated that the occipital area and the parotid gland absorbed a higher dose than other organs. In the majority of CBCT scans the parotid region received the highest dose. However, during sinus CBCT (both in low-dose and high-dose modes), the TMJ and eye areas absorbed the highest dose. Investigation of the use of thyroid shield on the absorbed dose in this organ in CBCT showed an average 22% reduction in dose.
CONCLUSION: In total, panoramic, Waters and Caldwell imaging techniques indicated that the occipital area and the parotid gland absorbed a higher dose than other organs. In the majority of CBCT scans, the parotid region received the highest dose. |
topic |
Radiation Dosimeters Absorption Radiation Cone-Beam Computed Tomography Panoramic Radiography |
url |
http://johoe.kmu.ac.ir/index.php/johoe/article/view/221 |
work_keys_str_mv |
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