ldct

The positive results of LDCT screening are 3 times of chest X-ray exam .

LDCT的筛查阳性结果是胸部X线片筛查的3倍；

A new interference suppression technique based on local discrete cosine transform ( LDCT ) is proposed .

提出一种新的基于局部离散余弦变换（Localdiscretecosinetransform，LDCT）的时频域干扰抑制方法。

Objective Investigate the value of low-dose CT ( LDCT ) scan in small pulmonary nodules diagnosis .

目的探讨低剂量CT扫描（LDCT）对于肺内小结节病变的诊断价值。

Whether LDCT has a high false positive rate and over-diagnosis in screening of lung cancer ?

LDCT筛查肺癌的假阳性率高及过诊问题；

The total heat transfer coefficient is measured by the heat transfer measurement and the convective heat transfer coefficient is obtained by LDCT .

传热实验所测定的是池核沸腾的总换热系数，由LDCT测定并以类比原理可以获得对流传热系数，两者差值即为界面汽化热阱效应。

Low-dose CT ( LDCT ) is the most promising tool for the population-based lung cancer screening currently .

低剂量螺旋CT是目前最有希望用于人群肺癌筛查的新技术。

The method applying the Limiting Diffusion Current Technique ( LDCT ) and heat transfer measurement together is used to separate the effect of interfacial vaporization heat sink in pool nucleate boiling process .

采用扩散极限电流技术（LDCT）与传热测定同时进行的实验方法分析了池核沸腾中的界面汽化热阱效应。

Methods : 30 patients with pulmonary metastatic tumor were underdone CT examination at both standard-dose CT ( SDCT ) and low-dose CT ( LDCT ) .

方法：对30例患肺转移瘤患者均作了低剂量和标准剂量的螺旋CT。

Methods Analyze the data and follow up 94 patients who took LDCT scan from 2002 to 2004 , comparing the results of different exam methods of chest film , normal CT and LDCT at the enrollment .

方法分析及随访2002～2004年进行LDCT检查的94例病人的特点，比较初次LDCT检查时胸部X线片、CT、LDCT间的差异。

The characteristics of mass and heat transfer of single liquid phase and gas-liquid two-phase flow in a vertical tube were studied with limiting diffusion current technique ( LDCT ) and the theory of heat and mass transfer analogue .

用极限扩散电流技术（LDCT）对竖直管内的液体单相流与气液两相流的传质特性进行了测量，经三传类比由测量结果获得了传热特性。

Conclusion LDCT can make accurate diagnosis in common disease of paranasal sinus , while the radiation dose reduced sharply so that it should be considered as an optimal imaging method in patients with suspected common disease of paranasal sinus .

结论LDCT能对鼻窦常见疾病作出准确诊断，同时可以大幅度减低射线剂量，临床拟诊鼻窦病变时可以选择LDCT检查。