Introduced a CT scan\'s basic concepts,principles, algorithms,and concrete detection for the concrete structure, Through analyzing the modelling inversion results of two models evaluating the prospect and its shortcomings of the appraisal sound wave CT examination technology in the concretes examination application.

In this article,authors mainly introduce three detection methods for the pile-end post-grouting technology including CT detection,core detection and self-balance static loading tests.

Introducing the way of CT detection within the explosive examination realm, and point analyzing the application of FBP algorithm in 2D CT image reconstruction, furthermore, the simulation of image reconstruction has been carried out using Matlab.

Low-dose spiral CT versus standard dose CT in detection of pulmonary metastasis from gestational trophoblastic tumor;

The photon fluences for (~(60)Co) CT container inspection system are calculated by using Monte Carlo method.

The photon fluences for 60Co CT container inspection system are calculated by using Monte Carlo method.

Based on the previous studies on overlying strata failure law,according to the hydro geologic conditions of Xin′an coal mine,the overlying strata failure law of coal mining under Xiaolangdi reservoir was analyzed by using methods such as FLAC 3D numerical simulation,seepage observation of drilling fluid and parallel network electric CT detection in the underground upward hole.