X-ray synchronization method suitable for pulsed fluoroscopy

Abstract

The invention provides an inner trigger circuit and an X-ray synchronization method suitable for pulse fluoroscopy. The inner trigger circuit comprises an optical signal acquisition module, a current-to-voltage conversion module, a sampling module and an inner trigger signal generation module. An inner trigger signal is obtained; an acquisition trigger signal is set, and an X-ray exposure window is arranged in an acquisition trigger window; when the acquisition trigger signal is not detected, self-acquisition is carried out according to a set frequency; if an acquisition trigger start signal is detected during the acquisition process, current acquisition is stopped, if an acquisition trigger ending signal is detected, the acquisition is delayed. According to the invention, the problem that when a dynamic flat is connected with a high-voltage generator, hardware physical connection is needed is solved, the installation process is reduced, and the inner trigger circuit is suitable for high-voltage generators of different types; at the same time, single trigger is improved, the frame rate is calculated in dependence on X-ray trigger, front delay and rear delay are set; the fact that the exposure window is arranged in the acquisition trigger window is guaranteed, advancing and trailing are avoided, and the inner trigger circuit is suitable for the dynamic flat upgrade market.

Description

technical field [0001] The invention relates to the field of flat panel detection, in particular to an X-ray synchronization method suitable for pulse fluoroscopy. Background technique [0002] The high-voltage generator tube and the X-ray flat panel detector are the core components of the X-ray imaging system as the emission source and the receiving surface respectively. Before X-ray emission, the panel needs to make preparations for clearing dark current. During the outgoing process, the panel needs to wait for the accumulation of photogenerated charges to avoid artifacts that appear during exposure. After the exposure, the panel needs to collect transmission images in time to avoid the impact of leakage current. The synchronization of the generator tube and the X-ray flat panel detector is the primary problem in the integration of the X-ray imaging system. [0003] According to the frequency of X-ray outgoing line and flat-panel detector acquisition, it can be divided in...

AI Technical Summary

Problems solved by technology

For the situation where the external interface definition and circuit of the high-voltage generator are not clear, the system integration cannot be carried out, and the external trigger cannot be realized.

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