扫描时间

扫描时间应该比标记时间短得多。

The sweep time should be significantly shorter than the mark times .

那时候扫描时间十分漫长，而且在CT检查时高暴露于放射线。

That was an unreasonably long scan time and in the case of CT entailed very high exposure to radiation .

肝细胞癌螺旋CT扫描时间窗优化

Optimization of Temporary Window for Spiral CT Scanning of Hepatocellular Carcinoma

PLC控制系统循环扫描时间的分析与设计

Analysis and Design of Cycling Scanning Time for PLC Control Systems

不同对比剂及扫描时间对残胃CT扫描效果的观察

The study of the efficiency of residual gastric CT scan with different contrast and scanning time

在性能上，多层CT扫描仪可减少扫描时间，降低层面的准直，显著增加扫描范围。

Multidetector CT scanners contribute to reduced scanner time , decreased section collimation and increased scan length .

给出了设计PLC逻辑控制系统循环扫描时间的4个限制条件。

Four limits in Design of the cycling scanning time of PLC logic control system are given .

电化学原位步进扫描时间分辨显微镜FTIR反射光谱

Electrochemical In Situ Step-scan Time-resolved Microscope FTIR Spectroscopy

Z轴分辨率及扫描时间、病人接受的放射剂量随螺距增大而增大；

The resolution of Z algorithm and the roent-gen patient taken , scan time increase with pitch increased ;

定量测量图像信噪比（SNR）、血管对比/噪声比（C/Ns）以及扫描时间。

Signal-to-noise ( SNR ), contrast-to-noise ( C / Ns ), and scan time were measured .

结果应用SENSE成像当缩减因子为2.0时，腹部每个序列扫描时间缩短约43%～50%，而图像的对比度不变。

Results After applying SENSE technique with reduction factor 2.0 , the scan time of each conventional sequence in abdominal imaging decreased 43-50 percentage of the counterparts without SENSE .

与此同时，不完全投影数据下的CT图像重建情况已不可避免，比如障碍物的阻挡或者对检查者健康的人性化考虑想缩短扫描时间等。

But at the same time , the incomplete projection data in CT imaging is inevitable , such as obstructions or shortening scan time to protect the patients ' health .

SCN~-吸附取向转化动力学的步进扫描时间分辨FTIR研究

Dynamic processes of orientation conversion of adsorbed SCN ~ - : study of in situ step-scan time-resolved microscope FTIR spectroscopy

结论联合应用SENSE技术能显著缩短扫描时间，而保持图像对比度基本不变。

Meanwhile , contrast resolution on SENSE imaging almost kept the same as that on conventional sequences . Conclusion SENSE technique can significantly shorten scan time and keep the high image quality .

DWI总的扫描时间40s。

Total diffusion scan time was 40 seconds .

CT双期延迟扫描时间分别为25s和60s。

Dual phase CT scans were obtained with the delayed time of 25 or 60 seconds , respectively .

结果表明CT低对比分辨力随着mA、kV、层厚、扫描时间、重建视野的增大而增大，随着扫描物体厚度、重建矩阵、螺距增大而减小；

The CT low-contrast resolution increased with mA , kV , slice thickness , scan time and FOV , and decreased with matrix , pitch and thickness of the scanned objective .

结论TI是决定抑制效果的关键参数，TR、TE仅决定扫描时间和扫描层数。

Conclusion TI is the key parameter in determining the repression effect , TR and TE only determine the scans time and layer number .

通过Visualc++6.0编程，研究了扫描仪误差与扫描时间、扫描位置、扫描分辨力等因素的关系，发现了一些规律，为编程实现针对扫描条件的测量结果自动修正打下了基础。

Relations between error and scanning conditions such as scanned time , object position and scanning resolution are studied by Visual C + + 6.0 programming , which make possible of auto result correction according to scanning conditions .

分析发现血肿体积对水肿体积有极显著的影响（P0.01），CT扫描时间和出血部位亦有显著影响（P0.05）。

Analysis revealed that hematoma volume had a significant effect on the edema volume ( P0.01 ) . CT scan time and the bleeding site also had a significant effect ( P0.05 ) .

结论可根据患者的G、A、Hr、Mabp和S来适当调控患者CT增强时注射对比剂后的延迟扫描时间。

Conclusion : The delayed time after contrast medium administration in CT enhanced scan should be adjusted individually according to the patients ' A , G , Hr , Mabp and s.

而SE序列扫描时间长、呼吸伪影和流动伪影少些；FSE和SE图像中病变显示率相似（P＞0.05，无显著差异）；

SE had longer imaging time , less respiratory motion and flow artifacts , FSE and SE were similar in detection of lesions ( P > 0.05 , statistically not significant ) .

如何提高工业CT的性能指标，如怎样进一步提高空间分辨率、密度分辨率，减少扫描时间，增大可测工件尺寸，改善图像质量等等成为了CT界面临的重要任务。

How improving the capability of ICT has become more and more an important task , for example , improving spatial resolution and density resolution , reducing scan time , enlarging the size of measure space , improving image quality , etc.

3.0T磁共振信噪比提高及扫描时间缩短，能获得高分辨率的图像，同1.5T磁共振相比，在扩散成像上有显著的优越性。

Compared with 1.5T MR , 3.0T MR has higher resolution of imaging with better SNR and shorter scanning time .

如果扫描时间很长，则应考虑缩小堆的大小或者采用gencon策略。

If the sweep times are very long , consider reducing the size of the heap or switching to the gencon policy .

为了进一步节省扫描时间，还对如何利用数字波束形成（DBF）技术实现优化进行了探讨。

Furthermore , this paper discusses how to optimize the beam position by using the technology of Digital Beam Forming ( DBF ) in order to save time for scanning .

结论股静脉时间-密度曲线表明造影剂的剂量与扫描时间的选择是间接下肢静脉CTV检查成功的两个主要因素。

Conclusion The time-density curve of common femoral vein indicates that contrast dose and time delay are of primary importance in indirect CTV of lower limb .

3D-FLASH序列合用水激发技术代替脂肪抑制可显著缩短扫描时间；

Water excitation as an alternative to fat suppression in 3D-FLASH sequence can shorten scan time significantly ;

结果本组首次CT扫描时间为起病后0~2d，表现为单纯ICH者4例，IMH者2例。

Results The initial CT scanning was obtained on 0-2 days after onset . IMH was showed in 2 cases and simple ICH was in 4 cases , of which 3 were located in temporal lobe and 1 in frontal lobe .

目的研究增强三维体积扫描时间飞跃法磁共振血管成像（3D-TOF-MRA）对偏侧面肌痉挛（HFS）、三叉神经痛（TN）病因诊断的临床价值。

Objective To study the clinical significance of 3 dimensional time of flight magnetic resonance angiography ( 3D-TOF-MRA ) for the pathogenesis of hemifacial spasm ( HFS ) and trigeminal neuralgia ( TN ) .