|
KMID : 1151820220160030273
|
|
Journal of the Korean Society of Radiology
2022 Volume.16 No. 3 p.273 ~ p.279
|
|
|
A Study on the Reduction of Absorbed Dose through the Insertion of a Shielding Material in the Intraoralsensor of Dental Radiography
|
|
Kim A-Yeon
Lee Seung-Jae
|
|
|
Abstract
|
|
|
|
In order to reduce the absorbed dose given to the patient during dental radiography, a sensor that inserts a shield into the intraoralsensor was designed. Using the designed sensor, the change in absorbed dose depending on whether or not a shield was used was evaluated. The system used to evaluate the absorbed dose is VEX-S300C from Vatech, and the energy spectrum of X-rays was obtained through SPEKTR simulation based on the irradiation conditions of 65 kV, 3 mA, and 0.15 sec, and the number of photons for each energy was derived. After designing the system through Genat4 Application for Tomographic Emission(GATE) simulation, the energy spectrum obtained was used as a radiation source to calculate the absorbed dose. Lead was used for the shield, and simulations were performed at 0.1 mm thickness intervals from 0.1 mm to 0.5 mm was evaluated. In the case of using an X-ray field with a diameter of 60 mm, the decrease in absorbed dose according to the presence or absence of a shield decreased exponentially as the thickness of the shield increased. In addition, when a 20 mm × 30 mm field was used, the absorbed dose was significantly reduced even when no shield was used, and it was confirmed that the absorbed dose was further reduced when a shield was used.
|
|
|
KEYWORD
|
|
|
Dental radiography, Intraoralsensor, Shield, SPEKTR, GATE
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|