ORIGINAL PAPER
Absorbed doses for patients
undergoing panoramic radiography,
cephalometric radiography and CBCT
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1
University of Lodz, Łódź, Poland
(Department of Nuclear Physics and Radiation Safety)
2
Nofer Institute of Occupational Medicine, Łódź, Poland
(Department of Radiological Protection)
Online publication date: 2017-05-12
Corresponding author
Małgorzata Wrzesień
University of Lodz, Department of Nuclear Physics and Radiation Safety, Pomorska 149/153, 90-236 Łódź, Poland
Int J Occup Med Environ Health. 2017;30(5):705-13
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ABSTRACT
Objectives: Contemporary dental radiology offers a wide spectrum of imaging methods but it also contributes to an increase
in the participation of dental radiological diagnosis in the patient’s exposure to ionizing radiation. The aim of this study is
to determine the absorbed doses of the brain, spinal column, thyroid and eye lens for patients during panoramic radiography,
cephalometric radiography and cone beam computed tomography (CBCT). Material and Methods: The thermoluminescent
dosimetry and anthropomorphic phantom was used for measuring the doses. The 15 panoramic, 4 cephalometric
and 4 CBCT exposures were performed by placing high-sensitivity thermoluminescent detectors (TLD) in 18 anatomical
points of the phantom. Results: The maximum absorbed dose recorded during performed measurements corresponds to
the point representing the brainstem and it is 10 mGy. The dose value recorded by the TLD placed in the thyroid during
CBCT imaging in relation to the panoramic radiography differs by a factor of 13.5. Conclusions: Cone beam computed
tomography, in comparison with panoramic or cephalometric imaging technique, provides higher radiation doses to the patients.
Int J Occup Med Environ Health 2017;30(5):705–713