Dose assessment in dental cone-beam computed tomography: Comparison of optically stimulated luminescence dosimetry with Monte Carlo method

Autor: Young Hyun Kim, Jeongmin Yoon, Ji Yeon Na, Jae Joon Hwang, Jeong-Hee Lee, Chena Lee, Sang-Sun Han
Rok vydání: 2020
Předmět:
Cone beam computed tomography
Luminescence
Statistical methods
Light
Optically stimulated luminescence
Monte Carlo method
Computed tomography
Effective dose (radiation)
Diagnostic Radiology
030218 nuclear medicine & medical imaging
0302 clinical medicine
Medicine and Health Sciences
Tomography
Multidisciplinary
medicine.diagnostic_test
Phantoms
Imaging
Simulation and Modeling
Radiology and Imaging
Physics
Electromagnetic Radiation
Statistics
Cone-Beam Computed Tomography
Physical sciences
Organ Specificity
Dose assessment
Medicine
Anatomy
Research Article
Dental cone
Materials science
Imaging Techniques
Science
Neuroimaging
Radiation Dosage
03 medical and health sciences
Diagnostic Medicine
medicine
Humans
Computer Simulation
business.industry
Biology and Life Sciences
030206 dentistry
Computed Axial Tomography
Research and analysis methods
Jaw
Dentistry
Face
Optically Stimulated Luminescence Dosimetry
Mathematical and statistical techniques
Nuclear medicine
business
Head
Mathematics
Neck
Neuroscience
Zdroj: PLoS ONE
PLoS ONE, Vol 15, Iss 3, p e0219103 (2020)
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0219103
Popis: The variety of cone-beam computed tomography (CBCT) machines and their applications has rapidly increased in recent years, making the dose evaluation of individual devices an important issue. Patient doses from CBCT were assessed with two different methods: optically stimulated luminescence dosimeter (OSLD) measurements and Monte Carlo (MC) simulations, in four different examination modes. Based on an analysis of the measurement process and the obtained values, a recommendation is made regarding which method is more practical and efficient for acquiring the effective dose of CBCT. Twenty-two OSLDs were calibrated and equipped in human phantoms of head and neck organs. They were exposed to radiation from two CBCT units-CS9300 (Carestream Dental LLC, Atlanta, Georgia) and RAYSCAN α+ (Ray Co. Ltd, Hwaseong-si, Korea)-using two different examination modes. The dose recorded using the OSLDs was used to calculate the organ dose and the effective dose for each unit in each examination mode. These values were also calculated using MC software, PCXMC (STUK, Helsinki, Finland). The organ doses and effective doses obtained using both methods were compared for each examination mode of the individual units. The OSLD-measured effective dose value was higher than that obtained using the MC method for each examination mode, except the dual jaw mode of CS9300. The percent difference of the effective dose between the two methods ranged from 4.0% to 14.3%. The dose difference between the methods decreased as the field of view became smaller. The organ dose values varied according to the method, although the overall trend was similar for both methods. The organs showing high doses were mostly consistent for both methods. In this study, the effective dose obtained by OSLD measurements and MC simulations were compared, and both methods were described in detail. As a relatively efficient and easy-to-perform method, we cautiously suggest using MC simulations for dose evaluations in the future.
Databáze: OpenAIRE
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