【摘要】 YY/T 1719—2023《正电子发射断层成像及磁共振成像设备通用技术要求》是国内首个PET/MR质控相关行业标准，基于该标准对PET/MR的核心参数检测技术进行研究。以联影uPMR 790 PET/MR为例，使用ACR MRI模体、NEMA IEC躯干模体等对PET/MR的信噪比、均匀性、空间分辨率、配准精度等参数进行性能测试和数据分析，并对测试方法进行探讨研究。所检测的性能参数均在标准要求及制造商提供的正常范围以内，MR部分的信噪比779.23、均匀性91.04%、层厚相对误差4.02%、最大几何畸变0.40 mm、低对比度可见轮辐34;PET部分断层成像灵敏度17.8 cps/kBq、散射分数44%、峰值NECR132.7 kcps、配准精度最大偏差1.4 mm。YY/T 1719—2023中使用的测试方法，大多为国内外较为通行且比较成熟的技术，具备可执行性，但部分参数所用方法相较于国际标准存在一定的滞后性，且在实际操作中具有一定的复杂度。更多还原

【Abstract】 Research on the core parameter detection technology of PET/MR based on YY/T 1719—2023 “General requirements of positron emission tomography and magnetic resonance equipment”, which is the first industry standard related to PET/MR quality control in China. Taking uPMR 790 PET/MR as an example, performance tests and data analysis were conducted on PET/MR parameters such as signal-to-noise ratio, uniformity, spatial resolution, and registration accuracy using models such as the ACR MRI phantom and NEMA IEC body phantom, and the testing methods were explored and studied. The results obtained are all within the standard requirements and the normal range provided by the manufacturer, with a SNR of 779.23, uniformity of 91.04%, relative error of layer thickness of 4.02%, maximum geometric distortion of 0.40 mm, low contrast visible spokes of 34 of the MR system; tomography sensitivity of17.8 cps/kBq, scattering fraction of 44%, peak NECR132.7 kcps, and maximum registration accuracy deviation of1.4 mm of the PET system. The testing methods used in YY/T 1719—2023 are mostly commonly used and mature technologies both domestically and internationally, which are executable. However, some of the methods used for certain parameters have some lag compared to international standards and have a certain level of complexity in practical operation.更多还原