Conclusion the cone beam ct and on-line correction could reduce the setup error.
结论锥束CT扫描在线校正能够缩小摆位误差。
These design processes ensure the optimal performance of the cone beam CT scanner.
这些设计过程保证了锥束ct的优化性能。
Later, people say this is the "head of the thigh, cone beam," said study hard for...
这就是后来人们说的“头悬梁，锥刺股”，用来表示读书刻苦的精神。
The direct volume imaging (DVI) means the reconstruction of volume data from a series of cone beam X ray 2d projections.
对由锥形束x线投影重建体积数据的直接体积成像方法进行了理论研究。
Turbine blades quality inspection technology based on Cone Beam Volume ct has become hot point of current NDT research field.
基于锥束体积CT的涡轮叶片质量检测技术是当前无损检测领域的研究热点。
The completeness condition for 3d cone beam exact reconstruction is analysed and derived theoretically, and discussion about some source orbits follows.
本文从理论上分析推导了3d锥束精确重建的完全条件，并结合一些具体的源点轨迹进行了讨论。
Using the present cone beam reconstruction formula for general trajectory, we have investigated the issue of detector efficiency for non-helical trajectory.
基于现有的锥形束普适轨道的重构公式，研究了非螺旋轨道的探测器效率问题。
Result: Images based on cone beam CT can clearly display the spatial relationship between root and maxillary sinus as well as inferior alveolar nerve canal.
结果：锥型线束CT可清楚显示牙根与下牙槽神经管及上颌窦之间的解剖关系。
Abstract : Objective: To discuss the clinical value of cone beam computed tomography (CBCT) in diagnosis of submandibular gland and Wharton's duct sialoliths.
摘要目的：探讨锥形束CT（CBCT）对颌下腺结石的临床诊断价值。
Objective to investigate the application of the limited cone beam ct (3dx) for the diagnosis of the hard tissue disease of apex and the anatomical morphology of the teeth.
目的研究牙科用三维小视野照射CT (3dx)在口腔内科根尖部硬组织疾病诊断和牙齿解剖学形态影像中的价值。
Because of the simpler theory structure and faster reconstruction speed, approximate cone beam reconstruction algorithms have become more and more popular in commercial applications.
近似锥束重建算法理论结构简单，重建速度快，易于实际应用。
However, this algorithm does not apply for circular orbit cone-beam scan with line-focus X-ray source.
但是，这种算法不能满足线X射线源圆轨道锥束扫描的情况。
By using a fixed point theorem of mixed monotone operators in cone, this paper studied a fourth-order nonlinear singular boundary value problem, namely a class of elastic beam equation.
利用锥上的混合单调算子不动点定理，本文研究了一类四阶奇异非线性微分方程的边值问题，即一类弹性梁方程问题。
With the development of spiral multi-slice CT, medical CT is in transition towards spiral cone-beam CT.
随着多层螺旋ct的出现，医用CT正在向着螺旋锥束ct转变。
Image reconstruction from spiral cone-beam data is practically advantageous, but it is mathematically complicated and technically challenging.
从螺旋锥束数据来重建图像有许多优点，但是这种成像方式在数学上比较复杂，技术实现也有相当的难度。
The influence of by different cone angles of the axicon and the different topological number of the vortex beam on the focusing properties of vortex beam is investigated.
研究了不同锥角的轴棱锥对涡旋光束聚焦特性的影响以及不同拓扑电荷数对聚焦特性的影响。
An analytical method allowing exact reconstruction from cone-beam projection data which are detected from a single circular orbit is discussed.
本文介绍了一种可以对来自于单一圆轨道的锥束投影数据进行精确重建的分析方法。
Objective: This work was to analyze the set-up errors in image guided IMRT for tumors using the cone-beam computed tomography (CBCT).
目的探讨锥形束CT用于调强放疗分次间摆位误差测量。
A novel beam steering system of a conformal cone-borne phased array is presented here.
本文提出了一种新的锥体共形相控阵波束控制方式。
A new kind of ct image reconstruction algorithm named Intermediate Function algorithm is presented in this paper. This algorithm can be used both in fan-beam and cone-beam scan.
本文提出的中间函数重建算法，是一种可以应用于扇束和锥束扫描的图像重建算法。
Abstract: Objective to investigate the canal morphology of maxillary first premolar using cone-beam ct (CBCT) and to know its generic and variant forms.
摘要目的采用锥形束ct (CBCT)探讨上颌第一前磨牙根管的解剖形态，了解其常规形态及变异形态。
The cone-beam CT reconstruction algorithm can be divided into to categories:iterative methods and analytical methods.
锥束CT重建算法主要分为两类：迭代法和解析法。
Therefore, the key of cone-beam CT reconstruction algorithm acceleration is to improve the speed of the projection operation.
因此针对锥束CT重建算法的加速研究关键是提高投影过程的计算速度。
The aim of the research is to find an effective reconstruction algorithm which can be used in cone-beam ct int...
研究它的目的是为将来的锥束扫描提供直接重建算法。
The aim of the research is to find an effective reconstruction algorithm which can be used in cone-beam ct int...
研究它的目的是为将来的锥束扫描提供直接重建算法。
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