多达几十种的准直器和滤光片的自由组合。
There are tens of combinations between the collimators and the filters.
目的：研究多叶准直器在临床的应用价值。
Purpose to study the clinical applying value of multi-leaf collimator.
目的：用系统均匀性指标检测准直器的质量。
Purpose: propose to measure the collimator's quality with system uniformity parameter.
提出了一种新型的准直器——双筛孔式准直器。
In this paper is advanced a new type of collimator-dual sieve-mesh collimator.
详细叙述了用轴准直器测定和修正这种影响的方法；
The method is recounted for determining and correcting the error with the axis-collimator.
另外，文中介绍了双层多叶准直器等几种新型设计方案。
Several new designs of MLCs are also introduced in this article, such as dual MLCs.
可采用加准直器和光量子积分降噪的方法提高检测灵敏度。
Quantum integration noise reducer and collimator can be used to improve the inspection sensitivity of the system.
并用一个反向散射修正因子对次级准直器的反向散射进行修正。
And a monitor backscatter factor is used to correct the effect of backscatter from secondary collimators.
该系统包括PSD，激光垂直准直器，数据采集箱和应用软件四个部分。
The system consists of PSD, laser vertical collimator, data sampling box and application software.
利用平-凸透镜准直器作扩束耦合光学系统，采用低频斩光器实现光调制。
This sensor featuring plane-convex lens collimator for expanding beam and coupling, and a low frequency for light pulse modulation is introduced.
对于放射外科来说，塑造治疗射野最简单的方法是采用单一、固定的准直器。
The simplest approach to radiosurgery is to use a single, fixed collimator to shape the treatment field.
利用所建立的模型，分析了各种因素对光纤准直器耦合效率和准直度的影响。
With this model, all kinds of factors on the coupling efficiency and collimation degree of the muti-mode fiber collimator were analyzed.
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。
Smaller collimators are particularly good at generating steep dose gradients and conforming dose to the target.
介绍了单模无偏准直器的原理与测试方法，并对一些制作工艺进行了讨论和比较。
The theory and testing methods for single-mode agonic fiber optic collimator are introduced and some fabrication processes are discussed and compared.
另一种可供选用的方法是在治疗过程中通过更换不同类型的准直器来改变射野大小。
The alternative approach is to switch one collimator for another midway through treatment, altering the field size.
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。
It is able not only to replace many existing collimators such as MLC, but also to make the conformal radiotherapy easier.
提出利用聚焦准直器代替单个准直器以达到增大探测器接收到的散射光子通量的目的。
Focusing collimators were used instead of single collimator to increase the scattering photon flux received by detector.
还针对编码针孔准直器的投影混叠问题，讨论了投影数据完备性和体积图像的重建方法。
Because of the projection image overlap due to coded-pinhole collimator, the completeness of projection data and volume image reconstruction algorithm are discussed.
由光纤光栅准直器组成的光纤光栅光开关真正实现了光纤光栅与光开关二合为一的结构。
The FBG optical switch (OSW), which composes by FBG collimators, is the integration package of FBG and OSW.
阐述了二元光学元件用于半导体激光器列阵准直的新方法，并设计制作了二元光学准直器。
A new collimating method for semiconductor laser array using binary optical elements is described in the paper and a binary beam collimator is designed and manufactured.
比较的结果还包括均整块和初级准直器的散射与射野大小及离开X射线源距离之间的关系。
The presented results also include the relations between scattering factors with therapeutical fields and the distances of primary X-ray source and target plane.
Gernot Echner及其同事所描述的鸢尾花型可变孔径准直器可彻底解决这个问题。
This problem is eradicated with the Iris Variable Aperture Collimator described by Gernot Echner and colleagues .
主要讲述了该方案的理论依据和推导过程，并利用试产的准直器检测数据证实该设备的有效性。
The paper describes the theoretical basis and derivation process of the scheme, and demonstrates the effectiveness of the equipment by means of the detection data obtai…
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。
This is typically achieved using fixed, circular collimators that produce sharp-edged, highly conformal treatment beams.
所述的 背散射探测器设置于所述准直器的前面，所述的透射探测器设置于所述背散射探测器的对面；
The backscattering detector is positioned at the front of the collimating element while the transmission detector is arranged opposite the backscattering detector.
尽管如此，治疗时间不可避免地延长了：当更换时放射外科治疗必须中止，配置各个准直器的直线加速器必须围绕患者运动。
However, treatment will inevitably take longer: radiosurgery is paused whilst the exchange is performed and the linac must be moved around the patient with each collimator fitted.
可变孔径准直器在赛博刀治疗规程中能更容易地切换射野大小，关于它的完整性能描述刊登在了《医学与生物学物理》杂志上。
A full description of the variable aperture collimator, which makes it easier to switch field size during CyberKnife procedures, is published in Physics in Medicine & Biology.
针对国内外现有半导体激光器准直器件的缺点，提出了一种用于半导体激光器准直的相位型二元菲涅耳衍射透镜的优化方法。
In this paper, we bring forth a new optimal design method of Fresnel diffractive lens using in light beam collimation of laser diode.
探测器单体和准直器单体是硬X射线调制望远镜主要工作单元，它们的力学性能直接影响硬x射线调制望远镜的观测性能和精度。
The detector parts and the collimator parts are important components of hard X-ray telescope, which mechanics properties decides hard X-ray telescope directly.
探测器单体和准直器单体是硬X射线调制望远镜主要工作单元，它们的力学性能直接影响硬x射线调制望远镜的观测性能和精度。
The detector parts and the collimator parts are important components of hard X-ray telescope, which mechanics properties decides hard X-ray telescope directly.
应用推荐