collimators

Smaller collimators are particularly good at generating steep dose gradients and conforming dose to the target.
尺寸越小的准直器特别有助于针对病灶产生有陡峭剂量梯度和适形的照射剂量。
More filter windows and collimators, better analysis condition.
滤光片以及准直器数目多，分析更有针对性；
This is typically achieved using fixed, circular collimators that produce sharp-edged, highly conformal treatment beams.
实现这种效果具代表性地是采用固定、圆形的准直器，它能够产生边缘锐利、高适形的治疗射束。
It is able not only to replace many existing collimators such as MLC, but also to make the conformal radiotherapy easier.
这种设备可以替代现有的多叶光栏和其它类别的准直器，使适形放疗更加易于实现。