Sina Mardfar, Mona Fazel Ghaziyani, Arman Saeedi Vahdat, Davood Khezerloo
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引用次数: 0
Abstract
Objectives: Cone beam computed tomography (CBCT) scans, essential for medical imaging, expose patients to radiation. To ensure safety, this study aimed to establish typical diagnostic reference levels (DRLs) and estimate median organ doses and cancer risks associated with CBCT scans in the Tabriz region, Iran.
Results: Patient data from 196 individuals undergoing common CBCT procedures were collected. Effective and organ doses were estimated using VirtualDoseCT software. Lifetime attributable risk of cancer incidence was estimated using BEIR VII report. DRL values were established based on gender and indication. Indication based values were 341 mGy.cm2 for implants, 387 mGy.cm2 for lesions, and 342 mGy.cm2 for sinus scans. Effective doses (EDs) were analyzed, yielding values of 30 μSv for males and 20 μSv for females. Organ doses analysis revealed that salivary glands received the highest dose, while thymus had the lowest in both genders. Lifetime attributable risk of cancer incidence was evaluated and found to be 0.0027 in 100 000 for male patients and 0.0084 in 100 000 for female patients.
Conclusions: The study highlights the importance of minimizing radiation exposure in CBCT examinations to reduce the risk of cancer and heritable effects. Tailored scan protocols and optimization measures can enhance patient safety by lowering doses. The results offer valuable guidance for dental and maxillofacial imaging practices on radiation doses and DRLs in CBCT examinations.
期刊介绍:
Radiation Protection Dosimetry covers all aspects of personal and environmental dosimetry and monitoring, for both ionising and non-ionising radiations. This includes biological aspects, physical concepts, biophysical dosimetry, external and internal personal dosimetry and monitoring, environmental and workplace monitoring, accident dosimetry, and dosimetry related to the protection of patients. Particular emphasis is placed on papers covering the fundamentals of dosimetry; units, radiation quantities and conversion factors. Papers covering archaeological dating are included only if the fundamental measurement method or technique, such as thermoluminescence, has direct application to personal dosimetry measurements. Papers covering the dosimetric aspects of radon or other naturally occurring radioactive materials and low level radiation are included. Animal experiments and ecological sample measurements are not included unless there is a significant relevant content reason.