Purpose: Analyze clinical practice of CT-based simulation, evaluate its effect on radiation therapy.
目的：通过对CT模拟定位系统在临床应用上的探讨，评价其在放疗中的作用。
Result: Like X-Ray simulation, CT-based simulation can carry out all the process from simulation to body surface marking.
结果：CT模拟定位可以和X线模拟定位一样完成从定位到做体表标记的全过程。
Objective:To study the clinical application of CT-based simulation and evaluate the its value in the treatment planning of intensity-modulated radiotherapy(IMRT).
前言： 目的：通过CT 模拟定位技术的临床应用研究，评价其在调强放疗计划设计中的作用。
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