查询词典 Ct

Objective To analyze the CT findings of celiac abscess in order to improve diagnostic level.

目的 分析腹腔脓肿的CT表现，进一步提高腹腔脓肿的CT诊断水平。

Results: The most common locations of PIP were at the margin of both lower lobes and associated with local pleural thickening and adhesion. The density of nodule in which CT attenuation value was 15~60 HU (26.9±13.5HU) was lower than that of PLC. Most of them were round/round-like and irregular in shape. The interior density of lesion was inhomogeneous. The presence of calcification or multiple cavitations, straight margin sign, hole sign and without hilar and mediastinal adenopathy were of great significance in the diagnosis of such kind of disease.

结果：炎性假瘤多位于两肺下叶，邻近胸膜增厚、粘连，病灶密度偏低（平扫CT值15~60HU，平均26.9±13.5HU），与周围型肺癌比较有统计学差异，其形态以圆形／类圆形和不规则形多见，病灶内密度多不均匀，可见钙化及多发空洞，边缘呈平直状、周围见毛玻璃样改变及肺门纵隔无淋巴结肿大等征象对本病的CT诊断有意义。

At the same kV,mAs,a wire phantom,a low contrast phantom and dried lung specimens were scanned with spiral CT and conventional CT respectively.

作者对钨丝模型、低对比模型、空气干燥膨胀肺标本在相同kV、mAs条件下进行不同层厚、不同重建算法、不同螺距的螺旋CT扫描及常规CT扫描，分析两种扫描成像的分辨率差异，支气管及血管的可见度及噪音。

The dose to the uterus from an abdominal CT is 10 mGy (1 rad), and the dose to the uterus from an abdominal and pelic CT is 30 mGy (3 rads).

经腹部CT的子宫照射剂量是10mGy(1 rad)，经腹部和盆腔CT的子宫照射剂量是30mGy（3 rad）。

Ray,normal CT scan and quasi coronary CT scan.Then,compare the result of exam result.Estimate the application of quasi coronary scan in anklebone fracture in X??ray exam.Results 3 cases was missed diagnosing in X??

收集踝关节骨折病例20例，均行X线、CT常规横轴位扫描及准冠状位扫描检查，比较三者的检查结果，评价CT准冠状位扫描技术在踝关节骨折检查中的作用。

Full-featured protection of CT-V characteristics can be tested, 5% and 10% error curve, variable ratio, polarity, but also can output high current is used to test CT secondary circuit.

功能全面可测试保护CT伏安特性、5％和10％误差曲线，变比、极性，还可以输出大电流用于测试CT的二次回路。

Objective To evaluate the diagnostic accuracy in terms of surface location, the needle, sampling method and the character of lesion. To investigate the complication of CT-guided percutaneous pulmonary biopsy with spring core biopsy needle.

目的 评价CT导引下应用弹簧芯状活检针经皮肺穿刺活检术中CT定位方法、穿刺针的选择、组织取材方法、病变特点等因素对本项检查诊断准确性的影响，探讨CT导引下应用弹簧芯状活检针肺穿刺活检术并发症的发生率、影响因素以及防治措施。

Concrete components have flaws, such as loose, hole, slit band and so on. These flaws not only lead to the change of acoustic velocity, but also have strong absorption and attenuation action to the acoustic wave. It is an effective method to detect engineering quality of concrete components by using acoustic velocity CT and attenuation CT combined detection technology.

混凝土构件中存在的诸如松散、空洞、缝隙夹层等缺陷，不仅造成声波速度的变化，而且对声波具有较强的吸收衰减作用，利用声波速度CT和衰减CT联合检测技术是检测混凝土构件工程质量的有效方法。

In the process of building and using the mass concrete structures, because of the effect of out-side condition and themselves, some faults will form in the structure, these faults will effect the bearing capability and endurance Using nondestructive testing method to test the concrete"s quality and diagnose its healthy, which has the significant sense in assessing the safety stability and research of the administering diseasesThis dissertation mostly researched the testing methods in the mass concrete structure, discussed the principles, methods, features, sphere of application of the ultrasonic testing in the mass concrete structure with faults, used dynamic FEM to simulate the testing process, discussed when the concrete structure with cracks is under the effect of the pulse, how the elastic waves propagate and what are their changing feature, Researched the principles of the first-arriving waves" phase when the cracks" depths are not same, obtained the relation between the inversion point and the cracks" depth, which has the direction sense in the application of projects,The second part of this dissertation is CT , which used the ultrasonic wave running through the tested-substance to get arriving-time of the ultrasonic wave, then inverse the image This dissertation drawed one CT program which can well present the different little cells ultrasonic wave velocity profiles of the substance, thereby to diagnose the quality of the part of the tested-substance, CT has the better using foreground..

在混凝土结构的施工及使用过程中，由于受其自身及外界各种因素的影响，常常会产生一些缺陷，对结构物的承载能力和耐久性造成严重影响，采用无损检测技术进行质量检测和健康诊断，这对混凝土结构开展安全、稳定性评估以及病害隐患治理研究具有重要意义。本论文主要针对大体积混凝土结构缺陷的检测方法展开研究工作，重点讨论了超声波法检测混凝土结构裂缝的基本原理和方法及其特点、适用范围，运用动力有限元数值模拟其检测过程，探讨了有裂缝缺陷的混凝土结构在脉冲荷载作用下弹性波的传播及其变化特征，研究了不同裂缝深度下首波相位变化规律，得出了反转临界点与裂缝深度之间的关系，这对实际工程应用具有指导意义。声波CT是一种新的无损检测技术，它是利用声波穿透被检测体获取声波接收时间，来进行计算机反演成像的技术。本文利用直射线法编制了层析成像程序，能较好地呈现被检测物体各微小单元的声波速度分布图像，从而对检测体的质量状况作出诊断评估，具有较好的应用发展前景。

In the descriptive data, 93% of respondents indicated that the use of CT scanner would elevate the quality of health care at the hospital. However, the logistic regression model showed that the hospital size was the only significant factor (p=0.013) associated with the CT scanner acquisition. Although, expected direct monetary return also had moderate significant association with this type of acquisition.

描述性数据显示93%的医院同意提升医疗品质为购置CT的主要动机，对数回归分析却说明，医院病床数为唯一影响医院购置CT的显著因素(p=0.013)，另一具中度显著性的因素为直接的金钱报偿(p=0.127)。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。