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

Abstract

The invention discloses a multi-stage energy type static security CT system and an imaging method. The static security CT system comprises at least one group of N-level image chain structures; baggageconveyer belts are arranged on the inner sides of the bottoms of the N-level image chain structures; the N-level image chain structures and the baggage conveyors belt are fixed on preset positions ofthe static security CT system through frames; the N-level image chain structures are sequentially arranged in the forward direction of a baggage passage; and the adjacent groups of N-level image chain structures are misaligned. The static security CT system can generate images with higher time resolution and more spectrum levels than spiral CT through the exposure of different time series ray sources in the N-level image chain structures, thereby improving the recognition rate of contrabands in baggage and the baggage inspection speed. On the other hand, the static security CT system is freefrom dependence on slip rings, and a multifocal X-ray source and a detector do not need to rotation, so that non-rotational static imaging is realized.

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.

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