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  遮盖
    Objective:To evaluate the effect of multi-planer reconstruction(MPR),surface shaded display(SSD),the volume rendering (VR),and to investigate the value of 16-slice CT image post-process in the diagnosis of bone and joint diseases.
    目的:评价16层MSCT多平面重建(MPR)、三维表面遮盖法重建(SSD)和容积再现(VR)等不同重建方法在骨关节疾病诊断中的显示效果,探讨16层MSCT重建技术对骨与关节疾病的诊断与鉴别诊断价值。
短句来源
    Images were processed by a SUN Workstation ADW 3. 1 or 4. 0. Reconstruction typles: shaded surface display (SSD), volume rederening (VR), maximum intensity projection (MIP) and curved panner reformation (CPR).
    ADW 3.1及4.0工作站,其中包括表面遮盖显示(SSD)、最大密度投影(MIP)、容积显示(VR)及曲面重建(CPR)等方式进行血管显示。
    Establishment of the method of surface shaded display for brain PET imaging
    PET脑显像表面遮盖法三维显示技术的建立
短句来源
    CCT took 10mm slice thickness. TCT took small FOV(14cm-20cm,including one lung and mediastinum), 2-5mm slice thickness, 1-2 pitch and 40%-67% overlapping. Surface shaded display was applied in 36 of them.
    CT常规扫描采用10mm层厚,靶扫描采用小视野(FOV 14cm~20cm),包括一侧肺野断面和纵隔,层厚2~5mm,p=1~2,重建时重叠40%~67%,36例作了三维重建(表面遮盖显示法,SSD)。
短句来源
    1. Surface shaded display for brain PET imagingObjective To develop a program for brain PET imaging using surface shaded display (SSD).
    目的 建立可在PC机上运行的脑PET显像表面遮盖法(surface shaded display,SSD)三维显示软件。
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  阴影
    The image datum were reconstructed to demonstrate the coronary artery in some methods such as volume rendering (VR) multiple planar/curve reconstruction (MPR/MPCR), maximum intensity projection (MIP) surface shaded display (SSD).
    对所有患者的扫描重建图像进行容积再现技术(VR)、多平面/曲面重组技术(MPR/MPCR)、最大密度投影技术(MIP)、表面阴影显示技术(SSD)等重组方式,观察上述方式对冠状动脉及其病变的显示。
短句来源
    Objective:To assess the clinical utility of hepatic artery spiral computed tomographic angiography(SCTA)and threedimensional reconstruction(3D) techniques,and to compare the diagnostic value of the two 3 D techniques which include shaded surface display (SSD) and maximum intensity projection(MIP).
    目的:评价肝动脉螺旋CT血管成像(SCTA)和三维重建(3D)的临床价值,并比较SCTA两种3D成像方法(表面阴影显示和最大强度投影,简称SSD和MIP)对肝动脉的显示的差别。
短句来源
    Surface shaded display (SSD) and Multi planar reformatting (MPR) were applied in vessel reconstruction.
    血管三维重建方式为表面阴影遮盖法 (SSD)和多平面重建法 (MPR)。
短句来源
    Among them,34 patients with maxillofacial fracture,10 patients with maxillofacial tumors and tumor-like diseases, and 16 patients with congenital deformities. The MSCT scanned with slice thickness of 2mm. The methods of 3D reconstruction included multi-planar reconstruction (MPR),shaded surface display (SSD),and volume rendering (VR).
    方法60例颌面骨病变,其中颌面骨骨折34例,肿瘤和肿瘤样病变10例,颌面骨先天畸形16例,术前均行MSCT扫描和三维重建,扫描层厚2mm,重建方法包括多平面重组法(MPR)、表面阴影显示法(SSD)和容积再现法(VR),术后将二维和三维图像与手术所见进行回顾性对照分析和验证。
短句来源
    We discribed the procedure that acquiring transverse image data via EBCT (including step volume scan, continuous volume scan, and movie scan), then reconstruct three dimensional image using multi planar reformation, maximum intensity projection, and shaded surface display.
    本文阐述了用电子束CT采集体层数据(包括步进容积扫描、连续容积扫描、电影扫描)后,用多层面重组(包括曲面重组)、最大密度投影、表面阴影显示等方法进行三维重建的处理过程。
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  “shaded”译为未确定词的双语例句
    Methods CT scanning was performed in 32 cases with complex nasal fractures by Somatom Balance on 2mm/2mm scan. The images were reconstructed with maximum intensity projection (MIP), multi-plannar reconstruction (MPR), shaded surface display (SSD), and volume rendering (VR) mode and compared with roentgenographic images.
    方法使用SO-MATOM BALANCE ls螺旋CT机,对32例复杂鼻部外伤者2mm/2mm扫描,常规进行最大密度投影法(MIP)、多平面重建(MPR)、表面覆盖法(SSD)、容积成像(VR)方式。
    Application of volume rendering and shaded surface display in CT angiography of vertebral artery
    容积重建术和表面成像术在椎动脉CT血管造影中的应用
短句来源
    Clinical Application of Spiral CT to Acetabular Fracture: Surface Shaded Display (SSD) and Volume Rendering (VR) Techniques Study and Compared with Two- dimensional CT (2DCT),X-ray and MPR
    螺旋CT三维重建(SSD、VRT)在髋臼骨折中的临床诊断价值:兼与X线、2DCT、MPR比较
短句来源
    Materials and Methods: Spiral CT scan of the middle ear was performed with 1. 0mm slice thickness at pitch 1. 0, bone algorithm, and 0. 1 - 0. 2mm reconstruction interval in 20 normal subjects(40 ears). CTVE, maximum intensity projection(MIP) and shaded surface display(SSD)3D were done respectively. The display ability of CTVE and 3D of the normal auditory ossicular chain was investigated and compared each other.
    材料和方法:20例无中耳疾病者采用层厚1.0mm、螺距1.0轴位薄层扫描,骨算法、0.1mm-0.2mm间隔重建,分别做CTVE成像、表面(SSD)和骨最大密度投影(MIP)3D重建,观察和比较CTVE和3D显示正常听骨链的能力。
短句来源
    Methods CT findings on axial,MPR and surface shaded display(SSD)images in 28 patients with 30 calcaneal fractures were analyzed, and the fractures were classified and appropriately treated.
    方法 分析28例30个跟骨骨折的轴位CT、MPR及表面重建(SSD)CT的表现,对骨折进行分型,并选择合适的治疗方案。
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The imaginary part of the load shading parameter describes the states of switches of load shading schemes while the real part is the corresponding amount of shaded load.
      
The procedure to search the operation with the least amount of shaded load for a feeder and a connected domain are detailed.
      
The proposed method can obtain the optimal operating mode with the least amount of shaded load thus showing its feasibility.
      
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To design equitable technical factorsof spiral CT study the mechansim and influential elements of artifact and the displayed grades of threedimensional pulmonary vessels, we inflated thelungs which were drawn from fresh cadavers (n=2)and living dogs (n=2) with air after Pouring contrast into pulmonary arteies. When pitch was 1, weexamined the influence of different collimations, foons of view (FOV) and reconstruction intervals onangiography with threshold shaded surface display(SSD). Results: 1. Thin...

To design equitable technical factorsof spiral CT study the mechansim and influential elements of artifact and the displayed grades of threedimensional pulmonary vessels, we inflated thelungs which were drawn from fresh cadavers (n=2)and living dogs (n=2) with air after Pouring contrast into pulmonary arteies. When pitch was 1, weexamined the influence of different collimations, foons of view (FOV) and reconstruction intervals onangiography with threshold shaded surface display(SSD). Results: 1. Thin collimation, small FOVand suitable narrow reconstruction interval displayed high grade of pulmonary vessels. 2. Thestair-step artifact resulted from discontinuous interpolation geometry. It related to the table incrementand reconstruction interval. 3. The drag-tail artifactwas determined by the section sensitivity. It relatedto the table increment. interpolation algorithm. Sothe technical factors of spiral CT should be chosenequitably in three dimensional pulmonary angiography.

为了设计螺旋CT三维血管成像的合理扫描条件、重建方法,探讨其肺血管三维成像的显示级别和伪影的形成机制、影响因素,对离体人、狗心肺各两具行肺血管灌注后充气,当pitch为1时,观察不同层厚、FOV和重建间隔对用表面覆盖法进行肺血管三维成像的影响。结果:①扫描层厚越薄,FOV越小,重建间隔适当缩小,肺血管的显示级别升高。②阶梯伪影由不连续内插算法引起,与床进速度和重建间隔有关。③拉长伪影决定于层敏感性,受床进速度、pitch和内插算法影响。表明螺旋CT肺血管三维成像受诸多成像因素影响,需合理选择。

A non invasive method to observe human anatomy is presented by three dimensional reconstruction of medical transverse images. The technique is even more valuable when using electron beam CT (EBCT). We discribed the procedure that acquiring transverse image data via EBCT (including step volume scan, continuous volume scan, and movie scan), then reconstruct three dimensional image using multi planar reformation, maximum intensity projection, and shaded surface display. By comparing the advantages...

A non invasive method to observe human anatomy is presented by three dimensional reconstruction of medical transverse images. The technique is even more valuable when using electron beam CT (EBCT). We discribed the procedure that acquiring transverse image data via EBCT (including step volume scan, continuous volume scan, and movie scan), then reconstruct three dimensional image using multi planar reformation, maximum intensity projection, and shaded surface display. By comparing the advantages and disadvantages of the three reconstructing methods, we suggest combining various methods to offer more reliable information to diagnostics. EBCT reduced moving artifacts to the least, improved the quality of three dimensional images. Moreover, the movie scan yields four dimensional reconstruction-three dimensional time sequence. According to the demand of three dimensional reconstruction, we suggest the optimal scanning parameters.

医学断层图像的三维重建技术提供了一种无创方法直观考察人体内的立体结构,当用于电子束CT(EBCT),更能充分显示它的价值。本文阐述了用电子束CT采集体层数据(包括步进容积扫描、连续容积扫描、电影扫描)后,用多层面重组(包括曲面重组)、最大密度投影、表面阴影显示等方法进行三维重建的处理过程。我们比较了各种重建方法的优、缺点,说明在实际应用中应当结合多种方法,给诊断提供更可靠的信息。电子束CT最大限度地减少了运动伪影,不但提高了这些方法的三维图像质量,而且其电影扫描派生出了四维重建──三维时间序列;根据三维重建的要求提出了优化扫描参数的建议。

Purpose:To assess the scanning technique and reconstructive skill of renal arteries with CT angiography (CTA). To evaluate ability of displaying renal arteries with CTA. material and methods: 30 Patientswithout renal vascular disease were prospectively studied by CTA. All cases were evaluated by maximum intensityprojection (MIP), 12 cases by shaded surface display(SSD) and curved planar re formation. 50 cases with normal renal arteries by DSA were analyzed as comparision. Results:the display rate of renal...

Purpose:To assess the scanning technique and reconstructive skill of renal arteries with CT angiography (CTA). To evaluate ability of displaying renal arteries with CTA. material and methods: 30 Patientswithout renal vascular disease were prospectively studied by CTA. All cases were evaluated by maximum intensityprojection (MIP), 12 cases by shaded surface display(SSD) and curved planar re formation. 50 cases with normal renal arteries by DSA were analyzed as comparision. Results:the display rate of renal arteries and their anterior,posterior divisions with CTA was 100%. The display rate of renal segmental arteries was inferior to DSA. Conclusion:CTA was a minimally invasive examination. Renal arteries and divisions can be clearly imaged by CT. It will bepossible to replace DSA in most cases. The imaging quality of renal arteries CTA depended on the scanning skill tca certain extent. and a small test injection was necessary for optimal delay.time be fore CTA.

目的:探讨肾动脉CTA扫描和重建技术;评价CTA显示肾动脉的能力。材料和方法:使用ElscintCTTwin扫描装置,对30例无肾动脉疾病临床表现且肾动脉CTA正常者进行前瞻性研究。全部病例经MIP法重建,12例行SSD和曲面改建。随机取50例肾动脉DSA表现正常者作为对照分析。结果:CTA对肾动脉和肾干动脉的显示率为100%,对肾段动脉的显示率不及DSA。结论:CTA是一种微创伤性检查方法。能清晰显示肾动脉和肾干动脉,在很大程度上可代替DSA检查。肾动脉CTA的成功在一定程度上取决于扫描技术,其中利用小剂量试验获得最佳延迟扫描时间十分必要。

 
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