
2.醫用直線加速器1/2
Authored by 品質保證 品質保證
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
1.依照現行法規,醫用直線加速器的光照野與輻射照野的一致性校驗,最短需多久檢查一次?
每年
每月
每週
每日
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
2.依現行法規規定,在假體參考深度下,測得輻射照野寬度80%內,其最大劑量(M)及最小劑量(m),分別 為 100 及 95 cGy,試計算照野平坦性(field flatness)為多少%
2.56
5.12
2.05
4.1
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
3.根據AAPM TG-45號報告的定義,如圖的照野平坦度為何?
1.49%
3.00%
49.00%
50.70%
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
4.依現行輻射醫療曝露品質保證標準規定,所謂的輻射照野是指輻射照射區域內,百分之多少的輻射劑量範圍?
30
50
70
80
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
5.醫用直線加速器的光子劑量,其輸出穩定性的每日品保誤差容許值為何?
<1%
<2%
<3%
<4%
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
6.如圖是下列那一項品保測試項目?
十字交叉線中心位置
光照野與輻射照野一致性
準直儀輻射旋轉中心
定位雷射
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
7.直線加速器每月的品保工作應保持劑量輸出誤差在多少%內?
5
3
2
1
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