Effect of cranium structure on dose distribution during intraoral radiography |
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| Affiliation: | 1. Division of Forensic Odontology, Department of Diagnostic ＆ Therapeutic Sciences, Meikai University School of Dentistry, Saitama, Japan;2. Division of Dental Radiology, Department of Diagnostic ＆ Therapeutic Sciences, Meikai University School of Dentistry, Saitama, Japan;3. Forensic Odontology Center, Meikai University School of Dentistry, Saitama, Japan;4. Department of Legal Medicine, Nihon University School of Dentistry, Tokyo, Japan;1. Monell Chemical Senses Center, 3500 Market Street, Philadelphia, PA 19104, USA;2. Department of Oral Physiology, Asahi University School of Dentistry, 1851-1 Hozumi, Mizuho, Gifu 501-0296, Japan;3. Obesity Institute, Geisinger Medical Center, 100 North Academy Ave, Danville, PA 17822, USA;4. Graduate School of Dental Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582 Japan;5. Oral Health Science Center, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061 Japan;6. Department of Oral Physiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558 Japan;1. Department of Oral Medicine, Periodontology, Oral Diagnosis and Oral Radiology, Faculty of Dentistry, Tanta University, Tanta, Egypt;2. Department of Surgery, Anesthesia, and Radiology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, Egypt;1. Faculty of Dentistry, Niigata University, Niigata, Japan;2. Division of Clinical Chemistry, Department of Medical Technology, Niigata University Graduate School of Health Sciences, Niigata, Japan;3. Department of Pathology, The Nippon Dental University School of Life Dentistry at Niigata, Niigata, Japan;4. Division of Anatomy and Cell Biology of the Hard Tissue, Department of Tissue Regeneration and Reconstruction, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan;5. Department of Human, Information and Life Sciences, School of Health Sciences, University of Occupational and Environmental Health, Kitakyushu, Japan;6. Department of Physiology, Keio University School of Medicine, Tokyo, Japan;1. Division of Developmental Biology and Regenerative Medicine, Department of Anatomy, Iwate Medical University, 1-1-1, Idaidori, Yahaba, Iwate 028-3694, Japan;2. Division of Pediatric and Special Care Dentistry, Department of Oral Health Science, School of Dentistry, Iwate Medical University, 19-1, Uchimaru, Morioka, Iwate 020-8505, Japan;3. Division of Oral and Maxillofacial Surgery, Department of Reconstructive Oral and Maxillofacial Surgery, Iwate Medical University, 19-1, Uchimaru, Morioka, Iwate 020-8505, Japan;4. Division of Anatomy and Cell Biology of the Hard Tissue, Department of Tissue Regeneration and Reconstruction, Niigata University Graduate School of Medical and Dental Sciences, 2-5274 Gakkocho-dori, Chuo-ku, Niigata 951-8514, Japan;5. Department of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1, Bunkyo-ku, Hongo, Tokyo 113-0033, Japan;1. Developmental Biology of Hard Tissue, Graduate School of Dental Medicine, Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan;2. Oral and Maxillofacial Surgery, Graduate School of Dental Medicine, Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan;3. Biomaterials and Bioengineering, Graduate School of Dental Medicine, Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan;4. Orthodontics, Graduate School of Dental Medicine, Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan;5. Northern Army Medical Unit, Camp Makomanai, Japan Ground Self-Defense Forces, Sapporo, Japan;6. Department of Orthopaedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan;7. Central Research Institute, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan;8. Shandong Provincial Key Laboratory of Oral Biomedicine, The School of Stomatology, Shandong University, Jinan, China;1. Department of Periodontology, Faculty of Dentistry, Hacettepe University, Ankara, Turkey;2. Department of Physics Engineering, Hacettepe University, Ankara, Turkey;3. Department of Anatomy, Hacettepe University Faculty of Medicine, Ankara, Turkey;4. Department of Biostatistics, Faculty of Medicine, Hacettepe University, Ankara, Turkey;5. Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey |
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| Abstract: | ObjectivesThis study aimed to evaluate, the effect of the cranium structure on dose distribution by measuring the dose using the RANDO phantom for safe use of an X-ray unit during personal identification work at a large-scale disaster site.MethodsAs the subject, the head and neck of the RANDO Phantom (Alderson) containing a dry skull composed of a tissue-equivalent substance and having a shape similar to that of a living body were studied. With the body in the supine position, the air doses per second of irradiation time were measured for a total of six sections of the anterior, premolar, and molar teeth (molar on the left side) at a tube voltage of 60 kV and tube current of 10 mA during maxilla and mandible intraoral radiography.ResultsThe region having the highest exposure dose was the main X-ray direction in both the mandible and maxilla. Conversely, the dose tended to be low in the range from the temporal region to the occipital region on both sides of the horizontal plane, from the frontal region to the occipital region of the sagittal plane, and in the parietal region of the frontal plane.ConclusionsIt would be preferable to examine from the top of the body where the dose tends to decrease for all imaging sites. |
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| Keywords: | Radiation protection Cranium structure Personal dental identification Intraoral X-ray unit Dental exposure |
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