磁共振成像无相位卷褶的应用

目的:探讨无相位卷褶技术在磁共振成像中的应用。方法:选择性对139例受检者进行解剖结构大小超过相位方向视野(FOV)范围的扫描。在其它条件相同的前提下,分别进行使用NPW技术和不使用NPW技术2个序列检查。结果:相同条件下,不使用NPW技术上述所有图像出现相位卷褶伪影;使用NPW技术则卷褶伪影消失。结论:使用NPW技术可防止卷褶伪影的发生。

Clinical Application of No Phase Wrap( NPW) Technique in MRI

Objective To study clinical application of no phase wrap(NPW) technique in MRI. Methods 139 patients were selected and performed two sequences with and without no phase wrap in the same condition. The two kinds of images were compared. Results In the same parameter, phase wrap artifacts were seen in all images without the option of NPW. In the opposite, with the option of NPW, the artifacts disappeared. Conclusion NPW can avoid the Phase wrap artifacts .