Effect of phase encoding on diffusion weighted imaging quality in pontine
DAI Yanfang
CHEN Nan
JIA Xiuqin
QI Zhigang
DUAN Xianggong
LI Kuncheng
Abstract：Objective To study the effect of imaging quality in pontine with different phase encoding on diffusion weighted im-aging(DWI). Methods A total of 121 patients were enrolled in this study. For each subject,the protocol of DWI was repeat-ed,acquiring both phase-encoding directions, anterior-posterior (AP) and posterior-anterior (PA). The imaging quality of the two images and the influence of the artifact type on the score were analyzed. Statistical analysis was performed by using Wilcoxon paired signed rank test and Mann-Whitney U test. Results The imaging quality of AP phase encoding direction was superior to that of PA( Z =-6.959,P <0.001). The score of tensile artifacts was better than that of compressive artifacts( Z =-6.223,P<0.001). The score of the pseudo-high signal in the AP phase encoding direction image tended to be lower( Z =-9.567,P <0.001). Conclusion The AP phase-encoding directions is superior to the PA in the diagnostic value for pontine.
Keywords：PontineMagnetic resonance imagingMagnetic susceptibility artefactsPhase-encoding
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 517-520 )