Graham W J, Anderson D W, Bogardus C R, Acker S E
Radiology. 1979 Sep;132(3):765-6. doi: 10.1148/132.3.765.
The amount of scattered radiation resulting from four Cobalt-60 teletherapy units in four different hospitals when trimmer bars were fully extended was studied. Scatter was present for all machines checked at between 10% and 20% of the central axis dose. Clinical significance is also discussed.
研究了四家不同医院的四台钴-60远距离治疗机在限束器杆完全伸出时产生的散射辐射量。在所检查的所有机器中，散射出现在中心轴剂量的10%至20%之间。还讨论了其临床意义。
