[1]李鹏,梁浩然,杨旭,等. 分段读出平面回波成像序列对宫颈癌扩散加权成像质量的影响[J].中国医学物理学杂志,2019,36(6):705-709.[doi:DOI:10.3969/j.issn.1005-202X.2019.06.017]
　LI Peng,LIANG Haoran,YANG Xu,et al. Effects of readout-segmented echo-planar imaging sequence on the quality of diffusion-weighted imaging in cervical cancer[J].Chinese Journal of Medical Physics,2019,36(6):705-709.[doi:DOI:10.3969/j.issn.1005-202X.2019.06.017]
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 分段读出平面回波成像序列对宫颈癌扩散加权成像质量的影响()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
36卷
期数:
2019年第6期
页码:
705-709
栏目:
医学影像物理
出版日期:
2019-06-25

文章信息/Info

Title:
 Effects of readout-segmented echo-planar imaging sequence on the quality of diffusion-weighted imaging in cervical cancer
文章编号:
1005-202X（2019）06-0705-05
作者:
 李鹏1; 梁浩然2; 杨旭1; 赵宏波1
 1.西安医学院影像诊断教研室， 陕西 西安 710021； 2.陕西省核工业二一五医院影像科， 陕西 咸阳 712021
Author(s):
 LI Peng1;  LIANG Haoran2;  YANG Xu1;  ZHAO Hongbo1
 1. Department of Imaging Diagnosis, Xi’an Medical University, Xi’an 710021, China; 2. Department of Imaging, the Nuclear Industry 215 Hospital of Shaanxi Province, Xianyang 712021, China
关键词:
 ; 宫颈癌; 分段读出平面回波成像序列; 单次激发平面回波成像; 扩散加权成像
Keywords:
 ; Keywords: cervical cancer;  readout-segmented echo-planar imaging;  single-shot echo-planar imaging;  diffusion-weighted imaging
分类号:
R737.3
DOI:
DOI:10.3969/j.issn.1005-202X.2019.06.017
文献标志码:
A
摘要:
 目的：探讨分段读出平面回波成像（RS-EPI）序列对宫颈癌扩散加权成像（DWI）质量的影响。方法：选取2015年5月~2018年5月收治的宫颈癌患者92例，所有患者均接受磁共振成像检查，并采用单次激发平面回波成像（SS-EPI）和RS-EPI序列扫描，其中SS-EPI又分为常规SS-EPI序列、高分辨率SS-EPI序列。观察3种扫描序列DWI的图像质量，比较3种序列显示DWI图像的变形程度、清晰程度、空间分辨率以及诊断信心评分，记录3种扫描序列的左右径、前后径以及面积测量值，并计算半定量测量图像的对比噪声比、对比度、信噪比。结果：RS-EPI序列的变形程度、清晰程度、空间分辨率、诊断信心评分高于常规及高分辨SS-EPI序列，且高分辨率SS-EPI序列除变形程度外的其它评分高于常规SS-EPI序列，差异有统计学意义（P<0.05）。3种扫描序列的左右径、前后径和面积比较无统计学意义（P>0.05）。RS-EPI序列的对比噪声比和对比度低于常规及高分辨SS-EPI序列，信噪比高于常规及高分辨SS-EPI序列，差异有统计学意义（P<0.05）。结论：与常规及高分辨率SS-EPI序列相比，RS-EPI序列的图像质量更高，能减少伪影，变形程度较轻。
Abstract:
 Abstract: Objective To investigate the effects of readout-segmented echo-planar imaging (RS-EPI) sequence on the quality of diffusion-weighted imaging (DWI) in cervical cancer. Methods A total of 92 patients with cervical cancer admitted from May 2015 to May 2018 were enrolled in this study. All patients received magnetic resonance imaging. Single-shot echo-planar imaging (SS-EPI) sequence and RS-EPI sequence were adopted. SS-EPI sequence was divided into conventional SS-EPI sequence and high-resolution SS-EPI sequence. The DWI image qualities of 3 kinds of scanning sequences were observed, and the deformability, clarity, spatial resolution and diagnostic confidence of 3 scanning sequences were compared. The left-right diameters, front-back diameters and area measurements of 3 scanning sequences were recorded. Moreover, the contrast-to-noise ratio, contrast and signal-to-noise ratio of semi-quantitative images were calculated. Results RS-EPI sequence was superior to conventional and high-resolution SS-EPI sequences in deformability, clarity, spatial resolution and diagnostic confidence. Besides, the scores of high-resolution SS-EPI sequence were significantly higher than those of conventional SS-EPI sequence (P<0.05), except for deformability. No statistical differences were found in left-right diameter, front-back diameter and area among 3 scanning sequences (P>0.05). The contrast-to-noise ratio and contrast of RS-EPI sequence were lower than those of conventional and high-resolution SS-EPI sequences, and the signal-to-noise ratio was higher than that of conventional and high-resolution SS-EPI sequences (P<0.05). Conclusion Compared with conventional and high-resolution SS-EPI sequences, RS-EPI sequence not only achieves a higher image quality, but also reduces artifacts and distortions.

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备注/Memo

备注/Memo:
 【收稿日期】2019-01-11
【作者简介】李鹏，硕士研究生，讲师，主治医师，研究方向：磁共振成像技术及神经系统、骨肌系统影像，E-mail: gzydj123@qq.com
更新日期/Last Update: 2019-06-25