It describes the methods of material recognition in single energy system, dual energy system, dual view system, scatter system, CT and stereo matching technique.

Computed Tomography (CT) is a technology with which we can know the structure of an object in the way of non-destruction.

Diagnostic value of positron emission tomography and computed tomography in the detection of thecervical lymph node metastases of head and neck malignancy;

Computed tomography (CT) is a technology which yields series of cross-sectional images inside of the object by nondestructive method, and has been widely applied to medical diagnostics, industrial nondestructive detection, aerospace and other fields.

A 3D computed tomography(CT) method to inspect assembly relationship of initiating explosive device and to nondestructively evaluate assembly relationship by building geometric model from CT images was described.

Applying the technique of computer tomography to ionosphere detection, Computerized Ionospheric Tomography (CIT) can produce the large scale distribution of elec-tron density in a two dimensional vertical profile of ionosphere.

A method based on RBF (Radial Basis Function) neural network image representation is proposed for the computerized tomography image reconstruction from a small amount of projection data,and the computation efficiency,reconstruction quantity as well as applicable range of the proposed method are analyzed.