扫描

objective to explore the effects on images from the space location of spectrum and scanning parameters,and summarize the technological essential and application hints.methods 65 patients were scanned in brain with magnetic resonance spectroscopy,the location and the size of region of interesting and other scanning parameters values （fov,frequency matrix,phase matrix,saturate cingulum,etc.

对65例头颅检查的受检者行磁共振波谱扫描，有目的地改变感兴趣区域的位置、大小和其他参数设置（fov、频率矩阵、相位矩阵、预饱和带等），记录预扫描后系统显示的半高宽、水抑制程度等数值，并对扫描后显示的图像质量进行初步评价，探讨这些数值与波谱质量之间的关系。

The invention is a rotary image-free 45-degree scan optical system, and it includes a 45-degree scanning mirror, double-reflecting optical converging primary system, K mirror rotary image eliminating system and after optical system, where the rotary axis of the 45-degree scanning mirror coincides with the optical axes of the other three systems, composing its optical axis.

一种无像旋的45°镜扫描光学系统，该系统包括45°扫描镜、双反射光学会聚主系统、K镜消像旋系统和后光学系统，45°扫描镜的旋转轴与双反射光学会聚主系统、K镜消像旋系统和后光学系统的光轴重合，构成本光学系统的光轴。

And the preparing method has the steps of: fixing the charge transfer complex on a scanning tunnel microscope, starting up the cut mode of the scanning tunnel, controlling the motion of pointer of the scanning tunnel, applying a voltage pulse between the charge transfer complex and the pointer, writing the information hole array in the charge transfer complex.

按如下过程进行制备：将电荷转移复合物固定于扫描隧道显微镜上，启动扫描隧道显微镜的刻写模式，控制扫描隧道显微镜的针尖的运动，在电荷转移复合物和针尖之间施加电压脉冲，在电荷转移复合物上写入信息孔阵。

In the design of the structure, a new 2-D scanning machine is put forward which has overcome the limit of common underwater TV system influenced by the environment of water. It can scan 360 degrees in horizontal plane and 90 degrees in vertical plane, and there isn't dead angle.

根据以上内容的研究和分析，在结构设计方面，提出了二维扫描机构，它克服了一般水下电视系统由于使用特殊环境的限制不能进行扫描的缺点，可以进行水平360度，垂直90度全方位扫描，并且不存在盲区。

For example, detectability was only 55% with plain radiograph and 100% with CT.

CT扫描在发现和估价病变方面较平片X线检查为敏感，如x线平片发现骨破坏仅为55％，CT扫描为100％；X线平片显示椎管受累为14％，CT扫描为65％。

Dither Duty Cycle Examples Pre-Dithered Data 15 14 13 12 11 10 9 8 1 6/7 4/5 3/4 5/7 2/3 3/5 4/7 Duty Cycle Pre-Dithered Data 7 6 5 4 3 2 1 0 1/2 3/7 2/5 1/3 1/4 1/5 1/7 0 Duty Cycle Display Types 显示类型 The LCD controller supports 3 types of LCD drivers: 4-bit dual scan, 4-bit single scan, and 8-bit single scan display mode.

LCD 控制器支持 3 种类型的 LCD 驱动器：4 位双扫描，4 位单扫描和 8 位单扫描显示模式。

Methods Among 9 cases of brain cysticercosis,7cases were examined by downfield type MR machine,2 cases were examined by highfield and superconduct type MR machine,8 cases were performed enhancement scanning.

方法临床确诊的脑囊虫病9例，低场永磁型磁共振机扫描7例，高场超导型磁共振机扫描2例，其中增强扫描8例。

Material and Methods:From March,2008 to January,2009,250 patients(146 Males and 104 Females,ranged from 18 to 82 years old,mean age was 48 years old) enrolled in the First Affiliated Hospital of Kunming Medical College were performed dual energy scan(Group A,200 patients) and Neuro-DSA scan(Group B,50 patients) using DSCT.The patients were randomly divided into Group A and Group B.Regarding to the justification of scan protocol,100 patients in Group A were selected as sub-group to explore the scan protocol.The image quality Was analyzed both in four categories(4.0/60、4.5/60、4.0/70、4.5/70) of flow rate and total amount of contrast-enhanced material and in three categories(100—150HU、150—200HU、200-250HU) of CT value of left common carotid artery.The comparison of two scan approach was based on image quality,radiation does, postprocessing methods,time of scanning and subtraction and data storage amount.To validate the diagnostic capability of DE-CTA virtual unenhanced images,100 patients in Group A were undergoing head scan both in routine non-contrast program and DE-CTA virtual unenhanced program.Mean CT values,signal-to-noise ratio,image quality,sensitivity of lesion identification,and radiation does were applied to comparison.According to diagnostic results of dual energy of cerebral arterial angiography,62 patients out of 200 patients in Group A were confirmed with cerebral vessel lesions,the results were complied with DSA findings(the time between the two methods were within 1 week).

材料与方法收集2008年3月到2009年1月间在昆明医学院第一附属医院行DSCT CTA检查者250例(男性146例，女性104例，年龄范围18-82岁，平均48岁)，随机分为A、B两组，A组200例行双能量头颅CTA扫描；B组50例行Neuro-DSA扫描。A组前100例按对比剂不同流率和总量分为4组(4.0/60、4.5/60、4.0/70、4.5/70)对图像质量比较；按触发时左颈总动脉内平均CT位分3组(100—150HU、150—200HU、200-250HU)，比较图像质量的差异；对A、B两组血管图像质量、辐射剂量、后处理的方法、扫描和后处理时间及数据的容量进行比较分析；A组中前100例行常规与DE-CTA虚拟平扫的平均CT值、信号噪声比、图像质量、病灶显示情况、辐射剂量的比较分析；A组中行DSA检查62例(两种方法间隔时间均1周内)，比较两种检查方法诊断结果是否符合，并对其中24例动脉瘤行动脉瘤部位、数目、形态、瘤颈显示程度、瘤颈大小及瘤体长径和短径的比较研究。

Aluminum foil in polychromatic overprinter photoelectricity scanner tracking color standard position correction and manipulation of order: first switched on automatically overprinter the total power switch device, open the channel computer power supply and track scan power, photoelectricity scanning head alignment reflector and adjust the distance from far and wide, so that the reflector to be rendered on the minimum light point, at which point the detection distance of about equal to the focal length of the photoelectricity scanning head.

铝箔众色套印洋差平电扫描器跟踪色不本场所订侧和操纵挨次为：不后不切断被迫套印安装的总电源开关，开放各通道计算机的把持电源和跟踪扫描电源，不兵平电扫描脚差准不直射不活，调度远近间隔，使不直射不活上表现的平不面最小，此时的检测间隔约即是平电扫描脚的焦距。

Computed tomography can provide reliable evidence for orbital anotomy,while the showing rate can also be affected by scanning technical parameters,scanning level and plane.

CT扫描成像对眼眶解剖可提供可靠依据，但扫描技术参数、扫描基线及投照体位对显示率有影响。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。