低场MRI:设备基于大视野的快速扫描探讨

摘要

To optimize the configuration of the conventional SE and FSE sequence parameters in low field MRI. With the combination of larger vision, relatively thinner slice thickness, small number of excitation ( NEX = 1 or 2 ), the signal-to-noise ration and the spatial resolution on follow-up images are moderate, the scan time is significantly shorter along with fewer motion artifacts, the check success rate is improved.%通过对低场MRI 各部位不同参数配置研究,提出较大视野、较薄层厚、小激励次数(NEX=1 或2)的组合方案图像信噪比用空间分辩率适中,且扫描时间明显缩短,移动伪影较少,检查成功率可得到提高.