3.0T磁共振风车扫描技术对比快速自旋回波和单激发快速自旋回波在女性盆腔扫描中提高图像质量的价值

摘要

目的 探讨3.0T磁共振成像(MRI)风车扫描技术对女性盆腔的扫描价值,以求减少伪影、提高图像质量.方法 回顾性收集2016年12月至2018年4月在东南大学附属中大医院行T2快速自旋回波(TSE),T2风车扫描(MV)和T2单激发快速自旋回波(SShTSE)三种矢状位压脂扫描的女性患者49例,由三名影像诊断医师采用5分法评分独立评价各成像的图像质量,通过医师的Cronbach′s Alpha重复性测定后对评分数据进行Mann-Whitney U统计学分析.结果 三位医师的Cronbach′s Alpha系数分别为0.950、0.973、0.985,表现为非常好的重复性.三位医师对三组图像做出的评分稍有区别,但整体一致.在解剖结构清晰度方面,MV及SShTSE均优于TSE,且差异均有统计学意义(均P<0.05),而MV对比SShTSE,医师1评分显示差异无统计学意义(P=0.126),医师2、3评分显示MV优于SShTSE(P值分别为0.022,0.005);MV及SShTSE对伪影的抑制均优于TSE,而SShTSE优于MV,且差异均有统计学意义(均P<0.05);MV及SShTSE均比TSE有更好的图像整体质量,且MV优于SShTSE,差异均有统计学意义(均P<0.05).结论 MV序列既能抑制运动伪影又能使扫描图像清晰,在女性盆腔扫描方面比TSE和SShTSE更能提高图像质量,帮助影像医师做出更准确的诊断.%Objective To evaluate the application of multivane technique at 3.0 T MRI in female pelvis examination in reducing artifacts and improving image quality .Methods A total of 49 female patients were collected between December 2016 and April 2018 from Zhongda Hospital Affiliated to Southeast University,which were examined with sagittal T 2-weighted TSE,T2 weighted -MV and T2 weighted-SShTSE with fat suppression on a 3.0 T scanner.Three radiologists assessed the images for the presence of artifacts and overall image quality using a five-point scale after Cronbach′s Alpha repeatability measurement of the three doctors.Results The Cronbach′s Alpha of the three doctors was 0.950, 0.973, 0.985, respectively.Both MV and SShTSE groups got higher points than TSE group .In the level of anatomic detail , the differences was statistically significant ( all P <0.05 ) .Although there was no significant difference between MV and SShTSE group in the score of doctor 1 (P=0.126), but had significant differences in the score of doctor 2 ( P =0.022 ) and doctor 3 ( P =0.005 ) .In assessing the images for the presence of artifacts, both MV and SShTSE groups got higher points than TSE group , while SShTSE group got higher points than MV group , and the differences were statistically significant ( all P <0.05 ) .In assessing the overall image quality , both MV and SShTSE groups got higher points than TSE group , while MV group got higher points than SShTSE group , and the differences were statistically significant ( all P<0.05). Conclusion Imagings of the anatomic detail are improved and the artifacts associated with bowel or respiratory motion are reduced with the MV technique .MV technique is important in providing an accuratediagnosis compared with TSE and SShTSE .