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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。
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    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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    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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  shaded
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.
      
The percentage of infiltration water supplied for the growth of fine roots reached a level of 88.32% on the shaded slopes and 85.21% on sunny slopes.
      
At nonzero angles of attack weak secondary separation was detected beneath the flattened regions of primary separation located in the shaded parts of the concave surface.
      
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Methods:Eighty cases of total or hemi laminectomy of lumbar spine were checked up by CT myelography in 3、6 and 12 months after the operations.Results:The results of the CT myelography's view showed iatrogenic complications including spinal canal structure defect,antiadhesive destroy of spinal canal,extending of epidural tissues into the canal,root's adhesion and epidural scar contraction with secondary spinal canal stenosis.The shade of epidural fibrosis in the CT presented in 27.3% and that of root fibrosis...

Methods:Eighty cases of total or hemi laminectomy of lumbar spine were checked up by CT myelography in 3、6 and 12 months after the operations.Results:The results of the CT myelography's view showed iatrogenic complications including spinal canal structure defect,antiadhesive destroy of spinal canal,extending of epidural tissues into the canal,root's adhesion and epidural scar contraction with secondary spinal canal stenosis.The shade of epidural fibrosis in the CT presented in 27.3% and that of root fibrosis in the myelography in 20.45%.Conclusions:Authors think that lumbar vertebral procedures should be performed with keeping vertebral intact,minor damage of spinal tissues and the limited extent of operative exposure.

方法:笔者对80例半椎板全椎板切除术后患者,进行3个月、6个月、12个月CT脊髓造影跟踪观察。结果:认为医源性并发症是———椎管生理解剖缺失、有效防粘连受损,椎管外软组织凸入椎管内与硬脊膜神经根粘连形成纤维化、硬脊膜外疤痕挛缩,继发椎管狭窄。术后半年CT硬脊膜外纤维化密度阴影加重占腰腿痛组273%、脊髓造影,硬脊膜疤痕挛缩神经根袖充盈缺损加重2045%。结论:因而术中尽量保持椎管完整,减少硬脊膜外纤维化程度,提高手术率有直接意义。

Objective:To evaluate the endurance time(ET)and heat strain of soldiers wearing the new type of individual protective ensemble(IPE)under field humid-hot environments(T d:29~33 ℃,RH:>70%).Methods:Fifty naturally acclimatized soldiers from the troops served as test subjects. The subjects marched at 5 km/h on a rather packed and smooth sandy road(no shade) during the experiment. ET tests included: 1)fifty subjects with the basic combat clothing worn under the IPE as full protection (Full-P);2) fifteen subjects...

Objective:To evaluate the endurance time(ET)and heat strain of soldiers wearing the new type of individual protective ensemble(IPE)under field humid-hot environments(T d:29~33 ℃,RH:>70%).Methods:Fifty naturally acclimatized soldiers from the troops served as test subjects. The subjects marched at 5 km/h on a rather packed and smooth sandy road(no shade) during the experiment. ET tests included: 1)fifty subjects with the basic combat clothing worn under the IPE as full protection (Full-P);2) fifteen subjects worn as Full-P and carried basic combat equipment(Full-Pw);3)fifteen subjects repeat the test of Full-p after 7-day heat acclimatization training (Full-Pr).ET was determined when rectal temperature raised 2 ℃, heart rate reached to 180 b/min for 5 min, or prodromal symptoms of heat illness appeared,or the subjects could not endure to the end of the test. Results:ET in Full-P (55.9±5.7 min) was similar to that in Full-Pr(58.7±10.2 min),and was significantly reduced in Full-Pw(45.1±4.5 min).The rate of heat storage was significanty increased in Full-Pw(94.9±11.6 W/m 2),compared with both Full-P(73.4±9.9W/m 2)and Full-Pr(76.7±13.4W/m 2).Conclusion:ET of soldiers worn this IPE may be relatively short(less than 1 h)in the humid-hot environments and with moderate work intensity,and heat stress may be severe and uncompensable.Further heat acclimatization would not reduce heat strain of soldiers wearing the IPE

目的 :研究自然湿热环境 (Td:2 9~ 33℃ ,RH :>70 % )中士兵着佩新型个人防护器材(IPE)的穿着时限 (ET)和热应激反应。方法 :50名受试者来自野战部队、且自然热习服。受试者在较平坦的硬沙土地面行军 ,时速 5km。ET试验内容包括 :(1) 50名受试者内着作训服、外着IPE的全防护状态试验 (Full-p) ;(2 ) 15名受试者着佩同Full -p、并携行单兵战斗装具试验 (Full-Pw) ;(3) 15名受试者经 7d的进一步热习服锻炼后 ,重复Full -P条件试验 (Full -Pr)。ET判定依据为 :肛温升高 2℃、心率达 180b·min- 1并持续 5min、有中暑先兆症状 ,或难以坚持试验。结果 :Full-P、Full-Pr和Full -Pw的ET试验结果分别为 55.9± 5.7min、58.7± 10 .2min和 4 5.1± 4 .5min ;Full-P与Full -Pr结果间无显著差异 ,但两者均与Full -Pw差异显著。Full -Pw时受试者热蓄积率 (94 .9± 11.6W·m- 2 )显著高于Full -P(73.4± 9.9W·m...

目的 :研究自然湿热环境 (Td:2 9~ 33℃ ,RH :>70 % )中士兵着佩新型个人防护器材(IPE)的穿着时限 (ET)和热应激反应。方法 :50名受试者来自野战部队、且自然热习服。受试者在较平坦的硬沙土地面行军 ,时速 5km。ET试验内容包括 :(1) 50名受试者内着作训服、外着IPE的全防护状态试验 (Full-p) ;(2 ) 15名受试者着佩同Full -p、并携行单兵战斗装具试验 (Full-Pw) ;(3) 15名受试者经 7d的进一步热习服锻炼后 ,重复Full -P条件试验 (Full -Pr)。ET判定依据为 :肛温升高 2℃、心率达 180b·min- 1并持续 5min、有中暑先兆症状 ,或难以坚持试验。结果 :Full-P、Full-Pr和Full -Pw的ET试验结果分别为 55.9± 5.7min、58.7± 10 .2min和 4 5.1± 4 .5min ;Full-P与Full -Pr结果间无显著差异 ,但两者均与Full -Pw差异显著。Full -Pw时受试者热蓄积率 (94 .9± 11.6W·m- 2 )显著高于Full -P(73.4± 9.9W·m- 2 )和Full -Pr(76 .7±13.4W·m- 2 )。结论 :在典型湿热环境中和中等作业强度下 ,着佩新型IPE士兵的ET不足 1h ;同时 ,热应激是严重的和不可代偿的 ,进一步热习服锻炼也不能减轻人员的热应激反应水平。

Objective:To assess the thin slice technique for lung disease.Methods:37 patients with pulmonary lesion proved by operation and pathology were scanned by spiral CT.CT scanning parameters used were as follows:slice thickness 3~5mm, pitch 1~2, and reconstruction interval 1~2mm.All the images have been processed on GE advantage windows 2.0 workstation.The reforming techniques included shade surface display (SSD) and maximum intensity projection (MIP).Results:The lesions of 1~5cm diameter in 37 cases were...

Objective:To assess the thin slice technique for lung disease.Methods:37 patients with pulmonary lesion proved by operation and pathology were scanned by spiral CT.CT scanning parameters used were as follows:slice thickness 3~5mm, pitch 1~2, and reconstruction interval 1~2mm.All the images have been processed on GE advantage windows 2.0 workstation.The reforming techniques included shade surface display (SSD) and maximum intensity projection (MIP).Results:The lesions of 1~5cm diameter in 37 cases were all demonstrated on CT scans.They also showed blood vessels supplying to tumor in 11 cases of adenocarcinoma,spicular sign in 10 cases and pleural indentation sign in 3 cases.Among 4 cases of tuberculosis,satellite lesions were shown in 2 cases and long spicular sign in 3.The multifocal fusion structure of 3 inflammatory pseudotumors were clearly documented.Conclusions:Thin slice spiral CT scanning with non interval reconstruction can well display the structure of lesion and its relationship to pleura,blood vessel and bronchus. It can improve accuracy of diagnosis and provide more details.

目的 :讨论螺旋CT扫描技术在肺部疾病检查中的应用价值。方法 :3 7例经手术病理证实的肺部病变均作螺旋CT扫描检查 ,层厚 3~ 5mm ,pitch1~ 2 ,重建间隔 1~ 2mm。所有图像均在GEAdvantageWindows 2 .0工作站上进行后处理 ,重建方式为表面显示法 (SSD)和最大密度投影法 (MIP)法。结果 :3 7例 1~ 5cm大小的病灶在CT图像上全部得以显示。11例腺癌的供血血管 ,10例细小毛刺 ,3例胸膜凹陷征在图像上清晰显示。 4例结核病变中 2例显示卫星灶 ,3例显示粗长毛刺 ,3例炎性假瘤的多病灶融合状态显示良好。结论 :螺旋CT扫描技术应用于肺部 ,可以消除呼吸运动所造成的病灶丢失及运动伪影 ,无间隔重建图像可很好显示病灶及其与胸膜、血管和支气管的关系 ,从而提供更为准确的诊断 ,为外科医生提供更多细节。

 
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