自制颈部匀场辅助装置改善3.0TMR3DCUBE-第三军医大学学报.doc

IDEAL与3D FSE-Cube序列正常臂丛节后神经成像对比研究 李 鹏，吕发金，彭 聪，张 丹，王筱璇，刘 丹（400016重庆，重庆医科大学附属第一医院放射科） [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，每位志愿者在进行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%，使用辅助装置后为100%、97.67%、93.33%，两组间有显著统计学差异（P0.05）；IDEAL与3D FSE-Cube序列神经节显示率分别为96.67%、100%，锁骨上区神经显示率分别为86.67%、96.67%，均无显著统计学差异（P0.05），锁骨下区神经显示率分别为70%及93.33%，3D FSE-Cube序列高于IDEAL序列（P0.05）；两序列神经节水平成像质量无显著差异（P0.05），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（P0.05）；IDEAL序列神经节水平神经信号高于3D FSE-Cube序列（P0.05）） [关键词] 臂丛神经；磁共振成像；磁化率伪影 [中图法分类号] R445.2；R331 [文献标志码] A Compared with IDEAL and 3D FSE-Cube in normal postganglionic brachial plexus Li Peng,Lv Fajin,Peng Cong,Zhang Dan,Wang Xiaoxuan,Liu Dan(Department of radiology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016 , China) [Abstract] Objective:To compare the sequences of IDEAL and 3D FSE-Cube imaging of brachial plexus. Methods: Brachial plexus of 30 volunteers were imaged on 3.0T MR system with sequences of 3D FSE-Cube and IDEAL, and all of the volunteers underwent the same MR scan for 2 times with 3D FSE-Cube sequence, The assistive device was used in the second time. Images were postprocessed 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 rate of ganglion, supra clavicular nerve, infra clavicular nerve on 3D FSE-Cube were 73.33%、56.67%、40%，After using the assistive device, the display rate of above levels were 100%、97.67%、93.33%, there statistically significant difference（P0.05）he display rate of ganglion and supra clavicular nerve on IDEAL and 3D FSE-Cube were 96.67%、100%,and 86.67%、96.67%,respectively, There was no statistically significant