层厚

多层CT扫描层厚、重建参数的选择对容积重建图像质量的影响

The effects of slice thickness and reconstructive parameters on VR image quality in multi-slice CT

多层螺旋CT不同层厚重建方法在肺栓塞诊断中的价值

The Value of Multislice CT with Different Reconstruction Slice Thickness in Diagnosis of Pulmonary Embolism

利用点源体模测量螺旋CT层厚灵敏度分布曲线的方法

Determination of spiral CT slice sensitivity profile using a point response phantom

CT层厚的自动检测及实践

The automated measurement and practice of CT slice thichness

CT质量检测中基于VC的层厚测量系统的设计

Design of CT slice width measure system based VC in CT quality test

多层螺旋CT计算心室容积的准确性及最佳层厚选择

The accuracy of ventricular volume measurement and the optimal slice thickness by using multislice helical computed tomography

目的探讨合理的螺旋CT门静脉造影层厚和重建方法。

Objective To optimize the collimation and the reconstructive method in spiral CT portography ( CTP ) .

多层螺旋CT不同层厚重建图像对支气管扩张症的诊断价值

The Value of Different Reconstruction Slice Thickness of Multi-Slice Spiral CT ( MSCT ) in Diagnosis of Bronchiectasis

目的：采用自动检测程序测量CT设备中的层厚，并把其结果与手动测试结果相比较。

Objective : To measure the slice thickness of CT scanners automatically , and compare the automated results with manual results .

单纯增加螺距或使用360度线性内插（Wide）重建模式，都会引起CT图像实际层厚的增加，引起更大的容积效应影响。

Large helical pitch and wide reconstruction mode are subject to partial volume effect , resulting from the increase of scan slice thickness .

方法：利用计算机辅助测试软件对2台CT设备的层厚进行自动测试，分析了自动测试的相关因素。

Methods : CT slice thickness for2 sets of computed tomography was measured using automated software , and the related parameters were analyzed .

所有患者CT扫描层厚、层距均为5mm。

The thickness of scanning slice was 5 mm in all patients .

结论扫描剂量和层厚对肺密度没有显著影响，低剂量螺旋CT值可以参考常规剂量扫描测得的肺密度值来判断有无肺气肿等异常。

The lung density obtained from standard dose CT can be used in low dose helical CT in judging emphysema or other pulmonary abnormality .

对实际软X射线光学多层膜中普遍存在的主要非理想因素（层厚漂移、界面粗糙度和界面扩散）进行了定量描述。

Three main factors , layer thickness fluctuation , interfacial roughness and interdiffusion of non-ideal soft X-ray optical multilayers were characterized quantitatively .

对于螺旋CT层厚的测量，普遍采用断层灵敏度分布曲线（SliceSensitivityProfileSSP）来反映其层厚的大小，而不能使用与轴向CT层厚测量相同的方法，因为其CT图像受到与其相邻的层面的影响。

But the slice thickness measurement and the slice sensitivity profile ( SSP ) are taken the methods rather than that of in axial CT .

TiN／Si3N4纳米多层膜硬度对Si3N4层厚敏感性的研究

Study on the sensitivity of hardness of tin / si_3n_4 nano-multilayers to si_3n_4 layer thickness

叠层厚壳动力分析的Hamilton方程及精确解

Hamilton canonical equation in dynamic analysis of thick laminated shell and its exact solution

MSCT不同层厚的最大密度投影在肺动脉栓塞诊断中的价值

Diagnostic value of the pulmonary artery embolism by maximum density projection on MSCT

[结论]重建CT图像的前后方向的几何误差是随着扫描层厚增加而增加，主要是由于CT扫描的部分容积效应影响。

[ Conclusion ] The geometric error of axial image reconstruction increases with the increase of CT scan slice thickness , due to CT partial volume effect .

研究目的：探讨去卷积法肝脏CT灌注成像时对比剂剂量、注射流率以及层厚对灌注参数值的影响；

Objective To study the influence of various doses and injection rates of contrast agent and slice thickness on hepatic perfusion CT with a deconvolution mathematical model .

材料和方法：选取21名正常志愿者，随机分为3组：b值组、弥散敏感梯度方向组和层厚/层间距组。

Material and methods : Diffusion tensor imaging of the cerebral white matter fiber was performed in 21 healthy adult volunteers , who are randomly divided into three groups .

8例做常规CT扫描，5例做螺旋CT扫描，层厚10mm。

Of them , 8 cases were scanned by conventional CT and 5 by spiral CT with 10 mm slice .

结论螺旋CT实际层厚与扫描层厚、螺距有密切关系，选择合适的扫描层厚及螺距对提高CT图像质量、减少扫描时间、减少病人接受的放射剂量均大有益处。

Conclusion CT scan with suitable scan slice and pitch can provide better quality of CT image , and decrease the examining time and the roentgen patient taken .

结果表明，氮掺杂TiO2/SiO2为核壳结构，TiO2包覆层厚约10nm。

TiO_2 / SiO_2 was of core-shell structure , and the TiO_2 shell was about 10 nm in thickness .

生长面上一个亚微观层厚的具有高溶质浓度（k＜1时）的熔体B；

Melt B which is in front of the growing interface with the thickness of submicroscopic layer of crystallization and high solute concentration ( when k < 1 );

CT平扫层厚和间隔为7mm。

For plain CT scan , 7 mm thickness and interval were used .

目的评价双螺旋CT血管造影（SCTA）不同扫描层厚和螺距对门静脉成像质量的影响。

Objective To optimize parameters with double spiral computed tomographic angiography ( SCTA ) for visualization of portal veins .

SLS激光快速成形烧结层厚的选取

Selecting of sintering thickness for SLS rapid prototyping

只需对曲线分段即可进行单参数（电阻率P2或层厚H）自动反演，不需求解方程组。

The sounding curve is only required to be segmented for single parameter ( apparent resistivity or layer thickness ) automatic inversion , without the necessity of solving the system of equations .

方法随机选用成年男性头部标本30例、活体健康成年男性6例，以经连合间线中点的垂线为基线，获得4mm层厚的颅脑MR冠状面图像；

Methods The serieses of 4 mm thickness coronal sections and coronal MR images of brain were prepared on 30 cadaver heads .