A multi-level energy type static security inspection CT system and imaging method

Abstract

The invention discloses a multi-level energy static security inspection CT system and imaging method. The static security inspection CT system includes at least one set of N-level image chain structures. A luggage transfer belt is provided on the inside of the bottom of the N-level image chain structure. The N-level image chain structure and the luggage transfer belt are fixed on the preset position of the static security inspection CT system through a rack. In terms of position, each group of N-level image chain structures is arranged sequentially in the forward direction of the baggage channel, and adjacent groups of N-level image chain structures are arranged in a staggered manner. This static security inspection CT system can generate images with higher time resolution and more energy spectrum levels than spiral CT through the exposure of different timing ray sources in the N-level image chain structure, which can improve the recognition rate of contraband in luggage and Baggage check speed. On the other hand, this static security inspection CT system is free of dependence on slip rings, and the multi-focus X-ray source and detector do not need to rotate, achieving rotation-free static imaging.

Description

technical field [0001] The invention relates to a multi-level energy type static security inspection CT system (hereinafter referred to as the static security inspection CT system), and also relates to an imaging method of the multi-level energy type static security inspection CT system, which belongs to the technical field of radiation imaging. Background technique [0002] With the further improvement of security inspection technology accuracy requirements at home and abroad, traditional perspective security inspection equipment tends to be gradually replaced by CT equipment in important places such as civil aviation and customs; higher requirements. [0003] Existing security inspection CT equipment is divided into two categories, one is spiral CT equipment based on slip ring technology. In this spiral CT equipment, the radiation source and the detector need to rotate around the object to be measured. At present, the maximum speed of security CT can reach about 4 revolut...

AI Technical Summary

Problems solved by technology

However, the existing static CT technology is still difficult to meet multiple requirements such as dual-energy imaging, imaging quality, and scattering suppression, and there are still obvious deficiencies.

Images