Objective To establish a standard program of the dosedelivery for every individual patient and to study the criterion of quality assurance in intensity modulated radiotherapy (IMRT).
目的建立个体化调强适形放射治疗（IMRT）计划剂量验证的标准方法，探索调强剂量质量保证实施规范。
2
Earlier research has shown that an inexpensive single dose of an antiretroviral can reduce HIV transmission from mother to child during pregnancy or delivery.
早先的研究已经表明，便宜的单剂量抗逆转病毒疗法可以减少怀孕或分娩期间母亲对婴儿的艾滋病病毒传染。
3
Theoretically, without the flattening filter may reduce the treatment delivery time by enhancing the output dose rate.