Dynamic test phantom simulating cardiovascular motion for quality evaluation of CT imaging, and its control principle and quality testing method

摘要

The invention discloses a quality testing method dynamic test phantom simulating cardiovascular motion for quality evaluation of CT imaging, and its control principle and quality testing method. The dynamic test phantom includes: a control system, an electric cylinder unit, a piston pump unit, a fluid circuit unit and a cardiovascular phantom; the control system includes a control box and a control PC, wherein the control box includes a PLC control system and an electrocardiogram generator, and the PLC control system is connected with the control PC and the electrocardiogram generator respectively; the electric cylinder unit includes an electric cylinder drive unit and an electric cylinder transmission unit, wherein the electric cylinder drive unit is connected with the PLC control system, and the electric cylinder transmission unit is connected with the electric cylinder drive unit; the piston pump unit is connected with the electric cylinder transmission unit; the fluid circuit unit includes a fluid confluence module and fluid pipelines, which are connected with the piston pump unit and the cardiovascular phantom respectively; and the cardiovascular phantom includes a ventricular phantom, coronary artery phantoms and a water tank. The dynamic test phantom according to the invention can simulate ventricular strokes and multiple motion phases, and has standard models of normal heart rate, arrhythmis, coronary artery stenosis, etc.