Heart dynamic CT quality control phantom and application thereof

Abstract

The invention provides a heart dynamic CT quality control phantom and application thereof. The heart dynamic CT quality control phantom comprises a heart portion, a control portion and a connection portion. The heart portion comprises a humanoid heart model and a coronary artery model for simulating different proportions of stenosis and atherosclerosis; the control portion comprises a microcontroller and used for generating PWM waves and transmitting to a motor driver; the motor driver is used for converting the PWM waves into angular displacement signals and transmits to a stepping motor, andthe stepping motor is used for generating different rotating speeds according to different pulse frequencies so as to control the heart model in a mode of heart rate raising, heart rate declining orarrhythmia / regular beating; the connection portion comprises a connection part, one end of the connection part is connected with an output shaft of the stepping motor while the other end is connectedwith a piston, and the piston is inserted into the heart model from an upper position; the connection part is used for converting rotation of the stepping motor into linear motion in the same frequency, and air is pushed into and sucked out of the heart model through the linear motion, so that heart beating is realized.

Description

technical field [0001] The disclosure belongs to the field of cardiac phantoms, in particular to a cardiac dynamic CT quality control phantom and its application. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] In recent years, with the development of science and technology, CT has been increasingly used for imaging of dynamic organs, among which the heart moves at the fastest speed and has the most difficult imaging. The imaging quality of CT for the heart directly affects the accuracy of doctors' diagnosis of heart diseases, and it plays a vital role in clinical practice. Most of the phantoms currently on the market for CT quality control can only test the imaging effect of CT on static organs of the human body. There are few phantoms that can simulate the anatomy of the heart and simultaneously test the spatial and temporal resolutio...

AI Technical Summary

Problems solved by technology

[0004] At present, there are heart phantoms used to evaluate the quality of ECG and coronary artery imaging in the world, but most of them only make functional left ventricle and coronary artery, which cannot simulate the shape of the patient's real heart and coronary artery, and do not have a complete ventricle atrium

In addition, although the heart rate of these heart phantoms can be adjusted through the system, they can only simulate the regular beating of the heart, and cannot simulate irregular heartbeats, fast and slow heart beats, etc.

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