IDEAL与3D FSE-Cube序列正常臂丛节后神经成像对比研究  

Comparison of IDEAL and 3D FSE-Cube sequences for normal postganglionic brachial plexus

作　　者：李鹏[1] 吕发金[1] 彭聪[1] 张丹[1] 王筱璇[1] 刘丹[1] 

机构地区：[1]重庆医科大学附属第一医院放射科,重庆400016

出　　处：《第三军医大学学报》2013年第6期553-557,共5页Journal of Third Military Medical University

摘　　要：目的比较IDEAL序列及3D FSE-Cube序列臂丛节后神经成像图像质量。方法利用3.0T磁共振对30名志愿者采用IDEAL序列及3D FSE-Cube序列进行臂丛节后神经成像,每名志愿者在进行3D FSE-Cube序列扫描时均进行两次扫描,第2次使用了自制匀场辅助装置。将所得图像进行MIP、CPR等后处理,计算两种序列臂丛神经各水平显示率,进行神经成像质量评分,测量神经、肌肉、背景噪声信号,并计算神经信噪比(SNR)及对比噪声比(CNR)。结果使用辅助装置前3D FSE-Cube序列臂丛神经神经节、锁骨上区神经、锁骨下区神经显示率分别为73.33%、56.67%、40.00%,使用辅助装置后为100.00%、97.67%、93.33%,两组间差异有统计学意义(P<0.05);IDEAL与3D FSE-Cube序列神经节显示率分别为96.67%、100.00%,锁骨上区神经显示率分别为86.67%、96.67%,差异均无统计学意义(P>0.05),锁骨下区神经显示率分别为70.00%及93.33%,3D FSE-Cube序列显著高于IDEAL序列(P<0.05);两序列神经节水平成像质量无显著差异(P>0.05),斜角肌水平、胸锁关节水平、腋动脉水平3D FSE-Cube序列神经成像质量优于IDEAL序列(P<0.05);IDEAL序列神经节水平神经信号高于3D FSE-Cube序列(P<0.05),斜角肌水平、胸锁关节水平、腋动脉水平两组间差异无统计学意义(P>0.05);IDEAL序列信噪比及对比噪声比均高于3D FSE-Cube序列(P<0.01)。结论 IDEAL序列和3D FSE-Cube序列均能清晰的显示节后臂丛神经,3D FSE-Cube序列结合使用匀场辅助装置具有更高的神经成像质量。Objective To compare the sequences of iterative decomposition of water and fat with echo asymmetric and least-squares estimation （IDEAL） and 3D FSE-Cube imaging of brachial plexus. Methods Brachial plexus of 30 health volunteers were imaged on 3.0T MR system with sequences of 3D FSE-Cube and IDEAL respectively. All of the volunteers underwent the same MR scanning for 2 times with 3D FSE-Cube sequence with the assistive device was used in the second time. Images were post-processed with MIP and CPR, and then the display rate was calculated, and image quality was assessed, signal noise ratio （SNR） and contrast-to-noise ratio （CNR） were calculated. Results The display rates of the ganglion, supra clavicular nerve, and infra clavicular nerve on 3D FSE-Cube sequence were 73.33%, 56.67% and 40.00% respectively, while the rates were 100.00%, 97.67% and 93.33% respectively after use of the assistive device, with statis- tically difference between them （ P 〈 0. 05 ）. The display rate of ganglion were 96.67% and 100.00% on IDEAL and 3D FSE-Cube respectively, and that of supra clavicular nerve was 86.67% and 96.67% , respec- tively, but there was no significantly difference in both of them （ P 〉 O. 05 ）. The infra clavicular nerve was shown better on 3D FSE-Cube than IDEAL （93.33% vs 70.00%, P 〈0.05）. In levels of ganglion, the imaging quality on IDEAL and 3D FSE-Cube had no significant difference（P 〉 0. 05 ）. In the levels of inter- scalene area, costoclavicular space, and axillary, the quality of 3D FSE-Cube was better than IDEAL （P 〈 0. 05）. In the level of ganglion, the signals of IDEAL were higher than those of 3D FSE-Cube （P 〈0. 05）. There was no significant difference in other level of brachial plexus between the 2 sequences （P 〉 0. 05 ）. SNR and CNR were both higher in IDEAL than in 3D FSE-Cube （P 〈 0.0l ）. Conclusion The sequences of IDEAL and 3D FSE-Cube both have the capacity of clearly displaying postganglionic brachial plexus, But the imaging quality o

关 键 词：臂丛神经 磁共振成像 磁化率伪影 

分 类 号：R322.85[医药卫生—人体解剖和组织胚胎学] R445.2[医药卫生—基础医学]