CT bulb tube current control method, control system and CT imaging method

Abstract

The invention discloses a CT bulb tube current control method. The method comprises the following steps that a central controller is provided, wherein the central controller obtains bulb tube mA value data with timestamp information according to the attenuation value of a scanned part; a processing module is provided, the processing module receives the mA value data output by the central controller and screens out effective mA value data within the setting time threshold value range; two adjacent effective mA value data are subjected to interpolation processing and caching, a high-voltage generator is provided, and the high-voltage generator controls CT bulb tube X ray dosage to be exposed. According to the CT bulb tube current control method, interpolation processing is conducted on the bulb tube mA value data which is issued by the central controller and has longer time intervals, the bulb tube mA value data having more time subdivisions in the scanning process is obtained, and high-precision real-time control over a CT bulb tube is achieved. Meanwhile, the invention further provides a CT bulb tube current control system and a CT imaging method.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of computer tomography, in particular to a CT tube current control method, a control system and a CT imaging method. [0003] 【Background technique】 [0004] Since the advent of Computed Tomography (CT) equipment, the imaging technology has developed extremely rapidly and the equipment has been continuously updated. In medicine, it is used to diagnose spinal and head injuries, intracranial tumors, blood clots in the brain, soft tissue injuries, gastrointestinal diseases, malignant lesions of the waist and pelvis, etc. The basic process of its imaging includes: X-rays are emitted from the focal position of the CT tube and pass through the human body to reach the detector; the detector receives the X-rays passing through this layer and converts them into energy intensity signals; the data acquisition and processing system collects the energy intensity signals , and combined with a certain algorithm to...

AI Technical Summary

Problems solved by technology

[0005] During the entire imaging process, the X-ray tube is one of the most important components of the CT system, because it provides the necessary X-rays for CT scans, it is expensive, and it is also the most easily damaged part of the CT machine

In the process of medical diagnosis by CT machine, the method of increasing the X-ray dose is used at the beginning to obtain more and clearer image information, but this method also shortens the life of the CT tube filament to some extent

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