可成像的

The bifocus lens could produce images at the two independent focal length respectively and recovery the object's depth information according to the two bifocal images,which is the principle of depth estimating using bifocal lens.

成像物镜具有两个独立的焦距，通过对空间物体成像并进行分析可获取其深度信息，此即双焦测距的原理。

Results Spatial relations of the tumors to the lamina terminalis, anterior commissure and anterior communicating artery complex were clearly shown in T2R images. The optic nerves, optic chiasm and optic tracts were detected in 93.3%, 100% and 86.7% of the patients on T2R images and 66.7%, 93.3% and 66.7% on T1 weighted images, respectively. Detection rate of optic pathway on T2R images was higher than that on T1 weighted images.

结果 重T2加权灰阶反转成像可清晰显示肿瘤与终板、前连合及前交通动脉丛的空间关系；其视神经、视交叉和视束的检测率分别为93.3%、100%和86.7%，而在T1加权成像中则分别为66.7%、93.3%和66.7%，前者对视路的检测率显著性高于后者。

Methods MRCP were performed in 66 cases using a heavy T2 weighted MR hydrography technique, the images were post-processed by three dimensional maximum intensity projection and three dimensional surface shaded display Results The accuracy of MRCP for evaluating this disease was 100%, and for the cause of disease was 86.6%.

采用重T2加权MR水成像技术对66例患者行MRCP检查，图像经三维最大信号强度投影及三维表面遮蔽显示技术后处理。结果：水成像定位诊断率达100%，定位诊断率为86.6%，此技术可清楚显示胰胆管的形态，显示各种胆道疾病的异常改变，诊断正确性高。

The research of positron imaging systems can be divided into two parts:imaging instrumentation and image reconstruction,which are the main interest of this thesis.

可见，正电子成像系统的相关研究可由两部分组成：成像装置的研究、图像重建的研究。本论文正是针对这两个方面。

Accuracy between two groups was calculated byχ~2 test.Calculate the average effective radiation dose of the 30 patients.Results In group A,seventeen patients underwent both DSCT coronary angiography and SCAG,among 255 segments of 17 patients,105 lesion sites of 70 segments were diagnosed stenosis or obstruction,of them,95 lesion sites were confirmed by SCAG.The accuracy of DSCTCA was 90.48%.The agreement of two methods have a high agreement(Kappa =0.853).In group B,13 patients underwent both DSCT coronary angiography and SCAG,among 195 segments of 13 patients,73 lesion sites of 57 segments were diagnosed stenosis or obstruction, of them,65 lesion sites were confirmed by SCAG.The accuracy of DSCTCA was 89.04%.The agreement of two methods have a high agreement(Kappa =0.835). There was no significant difference(χ~2=0.098,p＞0.05) between the accuracy of two groups.The effective radiation dose of 30 patients was 3.67±0.43 mSv.Conclusion Compared with SCAG,prospectively ECG-gated transverse DSCT is a valuable examination to detect and diagnose coronary artery disease with a low dose coronary angiography.The accuracy of the DSCT is approximate to the SCAG.There was no significant difference between the accuracy of two groups.

结果200例患者均成功完成了适应性前瞻性心电门控双源CT冠状动脉血管成像；30例同期行SCAG检查的患者，A组17例：HR≤75 bpm，可评价冠状动脉节段255个，70个冠状动脉节段有105处不同程度的狭窄，95处狭窄程度与金标准SCAG相符，其阳性诊断准确率为90.48%；2种方法的诊断结果得到了较高的一致性(Kappa值=0.853)。B组13例；HR≥91 bpm，可评价冠状动脉节段195个，57个冠状动脉节段有73处不同程度的狭窄，65处狭窄程度与SCAG相符，其阳性诊断准确率为89.04%；2种方法的诊断结果得到了较高的一致性(Kappa值=0.835)。2个心率组间的诊断准确率无明显统计学差异(x~2=0.098，p＞0.05)。30例患者的平均有效辐射剂量为3.67±0.43 mSv结论适应性前瞻性心电门控双源CT冠状动脉成像是一种有效减低辐射剂量的扫描方式，其诊断准确率与金标准SCAG相比得到较高的一致性，且高、低2个心率组间诊断准确率无明显统计学差异。

Streak tube imaging lidar is a new type of flash laser radar,and its receiving detector is the transient optical streak tube. The characteristic of STIL is of wide field of view and high resolution. It has two types,single slit and multiple slits.

条纹管激光成像雷达是近10年发展起来的一种新型闪光式激光成像雷达，以瞬态光学器件条纹管作为探测接收器，可做到大视场、高分辨，分单狭缝和多狭缝两种体制。

Unlove conventional electron microscope, x

与习惯的自动显微镜成像术不相同，X 光显微镜成像术可使考虑样本保留在空气或水中。

The curve obviously declined from the low frequency to the middle frequency section, and was reduced to zero in the high frequency section, which objectively showed the change in imaging characteristics of the eyes from the low to high frequency areas.

PSF分析系统可直接采用屈光系统MTF曲线表达人眼的成像特征，该曲线MTF值从低频至中频迅速下降，高频趋向缓和至零，定量并客观地表达了人眼成像质量从低频至高频的改变。

An image-forming device, especially an optical magnifying device, e.g., binoculars or a telescope, has an image influencing optical component, more specifically an eyepiece. The same is held by means of a holding device in such a way that the optical component is axially displaceable along the optical axis of the image-forming device.

一成像装置，特别是光学放大装置如双筒望远镜或伸缩式望远镜，它有一影响图像的光学零件，特别是一目镜，该零件用一保持装置如此夹持，以使其可在轴向沿成像装置的光学轴线移动。

On the basis of the strong fluorescence intensity and high photostability of quantum dots, a new method for long-term tracking of single-viruses was established with a live-cell confocal microscope imaging system.

本文将转盘式共聚焦活细胞成像系统和QDs结合，实现了QDs对PV的标记，建立了一种可用于研究病毒侵染细胞及其运动特征的长时间实时动态成像新方法。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了