目的探讨膝关节相控阵线圈在 新生儿脑部MRI检查中的可行性和应用价 值。方法 用膝关节相控阵线圈和常规8通 道头部线圈对16例足月新生儿行脑部常规 扫描，获取横断位T1加权、T2加权、T2 FLAIR、扩散加权成像及矢状位T1加权成 像等图像，对比两种接收线圈所得图像质 量。结果 用膝关节相控阵线圈顺利完成 16例足月新生儿行脑部常规扫描，所获得 的图像无伪影，且图像信噪比优于常规头 部线圈。结论 膝关节相控阵线圈较常规 头部线圈更适合新生儿脑部MRI检查。

Objective To investigate the feasibility and advantages of knee phased-array coil in neonatal brain MR imaging. Methods Conventional brain MR imaging was conducted on sixteen newborns on a 1.5 T MRI scanner. Imaging techniques, including T1- weighted imaging, T2-weighted imaging, T2 FLAIR imaging, and diffusion weighted imaging at the axial orientation, and T1-weighted imaging at the sagittal orientation, were respectively performed using a knee phase-array coil. The image quality was quantitatively evaluated with compared to that obtained from a traditional 8-channel head coil. Results The study was successfully conducted with all images free of artifacts. The signal-to-noise ratio of the images acquired with the knee phased-array coil was better than that with the head coil. Conclusion The knee phased-array coil is superior for neonatal brain imaging to the traditional head coil.