Method and system for constructing quality control simulation motif of magnetic resonance radiotherapy machine

The invention provides a magnetic resonance radiotherapy machine quality control simulation motif construction method and system, and the method comprises the steps: importing an obtained structure file of a to-be-constructed motif into a 3D printing reconstruction system, generating a first simulation motif, and determining a to-be-measured target position and a needed measurement device; obtaining a device plug-in of a device needing to be measured and inserting the device plug-in to a to-be-measured target position to obtain a second simulation die body, performing 3D printing on the second simulation die body to obtain a hollow die body, obtaining imaging parameter information of a to-be-constructed die body medical image, performing fitting to determine a concentration ratio of filling materials corresponding to the target region and the organ of interest, and performing 3D printing on the hollow die body to obtain a to-be-constructed die body medical image; according to the method, a target area and an