Haas J S, Dean R D, Mansfield C M
Int J Radiat Oncol Biol Phys. 1983 May;9(5):763-8. doi: 10.1016/0360-3016(83)90246-8.
A new instrument has been added to the Fletcher-Suit-Delclos group of gynecologic applicators. The colpostats can be used as mini-ovoids, but by adding a shielded cap, the instrument has the configuration of the original preload Fletcher colpostat. Dosimetric studies show that this applicator produced transmission ratios (the fraction of radiation transmitted through the tungsten shield) and isodose curves similar to the bladder trigone and anterior rectal wall of 10-25%. With the shield-containing cap removed, the mini-ovoid provides little reduction in dose to those areas and should be used with caution.
弗莱彻-休伊特-德尔克洛什妇科施源器组中新增了一种器械。阴道施源器可作为小型卵形体使用，但通过添加一个屏蔽帽，该器械具有原始预加载弗莱彻阴道施源器的结构。剂量学研究表明，这种施源器产生的透射率（通过钨屏蔽传输的辐射分数）和等剂量曲线与膀胱三角区和直肠前壁的相似，为10% - 25%。取下含屏蔽帽后，小型卵形体对这些区域的剂量降低作用很小，应谨慎使用。
