CT imaging quality detection body model simulating cardiovascular system movement, control method and quality detecting method

Abstract

The invention discloses a CT imaging quality detection body model simulating cardiovascular system movement, a control method and a quality detecting method. The CT imaging quality detection body model comprises a control system, an electric cylinder assembly, a piston pump assembly, a fluid circulation assembly and a cardiovascular system body model, wherein the control system comprises a controlbox and a control terminal PC; the control box comprises a PLC control system and an electrocardiogram generator; the PLC control system is connected with the control terminal PC and the electrocardiogram generator; the electric cylinder assembly comprises an electric cylinder driving assembly and an electric cylinder transmission assembly; the electric cylinder driving assembly is connected withthe PLC control system; the electric cylinder transmission assembly is connected with the electric cylinder driving assembly; the piston pump assembly is connected with the electric cylinder transmission assembly; the fluid circulation assembly comprises a fluid route converging module and a liquid pipeline, and is connected with the piston pump assembly and the cardiovascular system body model;and the cardiovascular system body model comprises a ventricle body model, a coronary artery body model and a water box. The CT imaging quality detection body model disclosed by the invention can simulate ventricle pulsation and a plurality of motion phases, and has standard models including normal cardiac rate, arrhythmia, coronary artery stenosis and the like.

Description

technical field [0001] The invention belongs to the technical field of quality control standardization of digital diagnosis and treatment equipment, and in particular relates to a CT imaging quality detection phantom for simulating cardiovascular motion, a control method and a quality detection method. Background technique [0002] Cardiac computed tomography (Computed Tomography, CT) imaging, as a non-invasive imaging examination, has an accuracy rate of more than 80% in the diagnosis of cardiovascular diseases, and has gradually become an important examination method for early screening and postoperative evaluation. However, the heart is the most complex moving organ in the human body. The existing cardiac CT imaging technology is easily affected by the patient's heart rate difference, CT equipment performance, scanning parameter settings, and post-processing reconstruction, resulting in motion artifacts, blood vessel dislocation, and edge blurring. The problem greatly red...

AI Technical Summary

Problems solved by technology

However, there are still many deficiencies in the existing CT dynamic heart phantoms, which are mainly manifested in: (1) in terms of anatomical structure, the liquid filled in most coronary phantoms cannot flow; (2) in terms of tissue materials, silicone rubber or polymer Composite materials such as vinyl alcohol are mainly used, although they have certain biomechanical properties, but radiation equivalent is not considered; (3) In terms of motion characteristics, only using uniform, sinusoidal or simple variable speed to simulate the motion of each chamber of the heart does not have real Reflect the changes of the heart in different phases

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