齒科 X 線 撮影에 있어서 患者 對한 被曝과 防禦에 關한 硏究
Study Of Patient Exposure And Protection From Dental Radiography
치과방사선 1979년 9권 1호 p.25 ~ 31
소속 상세정보
박태원(朴兌源)/Tae Won Park
KMID : 0378219790090010025
Abstract
著者는 患者에 對한 被曝輕減과 防禦에 對한 機念을 確立할 目的으로 熱螢光線量計 및
papintec을 利用하여 水晶體 및 甲狀腺에 대한 線量과 空中散亂線을 測定하여 다음과 같은
結果를 얻었다.
1. 使用 X綠 發生裝置의 半價層을 測定(1.44mm A1)하였다.
2. 左側 上顎大臼齒 撮影時 phantom에서 測定된 左右側 水晶體 및 甲狀腺部의 線量은 各
各8.9, 1.2, 2.8mR이었으며, 同一한 條件에서 Phantom에서 前方의 84μR, 後方에서 11μR,
右側에서 18μR 그리고, 左側은 72μR의 分布를 보였다
3. 同一條件에서도 被寫體가 있는 경우, 혹은 없는 경우에 따라 約 5%의 線量 差異를 나
타냈다.
The utilization of x-ray for diagnosis and examination is increasing by about 5∼15%
every year, therefore, it would be mandatory to protect the patients from exposures and
so, studios in this field are performed even now.
In dental field, the area of irradiation is limited any to the head and neck area, but
the irradiated angle is varied following the objected tooth, so the adjacent structures
lens and thyroid gland thyroid be fragile to radiation. And the scattered radiation is one
of the complicated problems in the protection because of specificity of dental x-ray and
its object structures.
The author, by using TLD(Thermoluminescent Dosimeter; Teledyne Isotopes- Model
7300, Element; TLD 200 (CaF2:Dy) and Capintec(Capintec Model 192,
PM-30 Diagnostic chamber 28ml active volume), tried a measurement of air dose
distribution of the scattered radiation and the irradiated dose of lens and thyroid gland
under the condition of taking the film on the left maxillary molar.
The results were as follows :
1. The half value layer of adapted dental K-ray machine was measured, and is 1,44㎜
A1.
2. The time of irradiation on the left maxillary in the Alderson Rando Phantom, the
measured doses of left and right lens, and thyroid gland were 8.9 mR, 1.2 mR and 2.8
mR. Under the same conditions, the scattered radiation at the distance of 1 meter from
the phantom were 84 μR at the front side, 11 μR at the bach side, 18 μR at the right
side and 72 μR at the left side.
3. Under the same conditions, the dose showed higher value by about 5% in the
presence of object(phantom) than in the case of absence.
키워드
원문 및 링크아웃 정보
등재저널 정보