Local diagnostic reference levels for intraoral dental radiography in the public hospitals of Cyprus |
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| Institution: | 1. Belgian Nuclear Research Centre (SCK-CEN), Boeretang 200, BE-2400 Mol, Belgium;2. Medical Physics Department,Veneto Institute of Oncology IOV-IRCCS, Via Gattamelata 64, 35128 Padova, Italy;3. Institut de Radioprotection et de Sûreté Nucléaire (IRSN), BP17, 92262 Fontenay-aux-Roses Cedex, France;4. VINCA Institute of Nuclear Sciences (VINCA), University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia;5. Istituto Superiore di Sanità (ISS), Viale Regina Elena 299, 00161 Rome, Italy;6. Nofer Institute of Occupational Medicine, 8 Sw. Teresy, Str., 91-348 Łódź, Poland;7. Radiation and Nuclear Safety Authority (STUK), P.O. Box 14, 00881 Helsinki, Finland;8. Institute of Nuclear Physics (IFJ – PAN), ul Radzikowskiego 152, PL-31-342 Kraków, Poland;9. Ruđer Bošković Institute (RBI), Bijenička c. 54, 10000, Zagreb, Croatia;10. Centre Hospitalier Universitaire de Liège (CHUL)/Zephyra scrl, Avenue de l''Hôpital, 4000 Liège, Belgium;11. National Radiation Protection Institute (NRPI), Bartoškova 28, 140 00 Prague 4, Czech Republic;12. Udine University Hospital (AOUD), pl S. Maria della Misericordia, 15, 33100 Udine, Italy |
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| Abstract: | PurposeThe purpose of this study was to determine local DRLs for children and adults undergoing intraoral dental examinations at the intraoral radiology units of the public hospitals in Cyprus.MethodsMeasurements were made on all the twenty intraoral X-ray units of the public hospitals in Cyprus with the intention to establish the local DRLs for all the possible intraoral X-ray examinations for children and adults. All units are film based. The measurements were made by a Dose Area Product (DAP) meter (GAMMEX RMI 841-RD) placed at the surface of the dental unit’s X-ray shaping cone (FSD 20 cm). A diagnostic radiology dosimeter (Dosimax Plus A) was also placed at an FSD of 100 cm to compare the dose reading between the two dosimeters.ResultsDRLs were established at the 3rd quartile for 7 exposure settings corresponding to 12 types of teeth (Adult and children mandibular and maxillary incisor, premolar and molar) with values of 197, 163, 128, 102, 81, 65 and 49 mGycm−2 and 7.23, 5.94, 4.75, 3.68, 3.10, 2.41 and 1.88 mGy for benchmark nominal exposure times of 1000, 800, 640, 500, 400, 320 and 250 ms respectively, at a nominal exposure voltage of 70 kVp.ConclusionsThe local DRLs of the present study compare well with other similar published DRLs. |
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| Keywords: | DRLs Dental radiography Intraoral radiography Patient dose Child dental DRLs Adult dental DRLs |
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