["Calibration Specifications for Contrast High-Pressure Injection Devices" released to protect the accuracy and reliability of medical imaging examination results] On November 5, the State Administration for Market Regulation released the national metrology technical specifications "Calibration Specifications for Contrast High-Pressure Injection Devices" from aspects such as injection dose, flow, pressure, timing, etc. to complete the measurement and calibration scale of contrast-enhanced high-pressure injection devices to ensure accurate and reliable medical imaging examination results. The "Specifications" build a measurement and calibration system covering three types of contrast agent high-pressure injection devices, including DSA, CT, and MR, and clarify four core calibration evaluation dimensions: First, the accuracy of injection parameters, distinguishing between different types of equipment, delineating injection doses and injection flow indication errors, ensuring accurate contrast agent administration volume, and ensuring contrast agent injection The rate meets the imaging requirements; the second is the difference in injection flow caused by background pressure changes, simulating clinical pipeline resistance conditions, and assessing the stability of flow output under high resistance conditions; the third is the accuracy of injection delay time, exposure delay time and scanning delay time, controlling the timing accuracy of the linkage between the contrast injection device and imaging equipment; The fourth is pressure parameter control, which stipulates pressure error, pressure limit deviation and maximum injection pressure to avoid diagnosis and treatment risks caused by high pressure from the source. The issuance and implementation of the "Specifications" provide technical standards for medical institutions to implement quality control and measurement management of high-pressure injection devices for contrast imaging, and for measurement technology institutions to carry out calibration. It can capture equipment performance drift in a timely manner, reduce clinical risks, and ensure reliable imaging diagnosis results.