摘要
目的：探讨MR 3D-FIESTA-c序列增强扫描在臂丛节前神经成像的可行性及应用价值。方法：对20例志愿者和10例臂丛神经节前损伤的患者行3D-FIESTA、3D-FIESTA-c平扫和3D-FIESTA-c增强序列扫描。评价３种方法对臂丛节前神经根根束数目的显示情况、对比噪声比（Contrast noise ratio，CNR）以及图像伪影，观察臂丛神经节前部分及其损伤在3D-FIESTA-c序列增强扫描中的MR表现。结果：3D-FIESTA、3D-FIESTA-c平扫、3D-FIESTA-c增强对双侧臂丛神经节前部分（C5～C8、T1）神经前后根根束数目的显示存在统计学差异。3D-FIESTA-c平扫、3D-FIESTA-c增强对双侧臂丛神经节前部分（C5～C8、T1）神经前后根根束数目的显示均高于3D-FIESTA。而3D-FIESTA-c平扫与3D-FIESTA-c增强对双侧臂丛神经节前部分（C5～C8、T1）神经前后根根束显示数目的比较差异无统计学意义。３种序列CNR分别为39.44±6.65、39.91±6.52、25.92±6.95。三者的CNR之间存在统计学差异。3D-FIESTA、3D-FIESTA-c平扫的CNR均高于3D-FIESTA-c增强。3D-FIESTA与3D-FIESTA-c平扫的CNR之间比较差异无统计学意义。3D-FIESTA-c增强序列增加了背景组织中肌肉的信号强度，不利于观察臂丛神经节前部分及其损伤。结论：3D-FIESTA-c增强与3D-FIESTA-c平扫尽管在显示神经根根束数目上无统计学意义，但由于其增加了背景组织中肌肉的信号强度，笔者认为宜在增强前行3D-FIESTA-c序列扫描。
Abstract
Objective: To investigate the feasibility and values of enhanced MRI using 3D-FIESTA-c sequence in displaying the preganglionic nerve of the brachial plexus. Methods: Twenty volunteers and 10 patients suffering from brachial plexus preganglionic injury underwent MRI using 3D-FIESTA, unenhanced and enhanced 3D-FIESTA-c sequences, respectively. The displaying number of the nerve bundle of anterior and posterior rootlets of brachial plexus and contrast noise ratio(CNR) and artifacts of images at the three sequences were evaluated. The signs of the normal brachial plexus preganglionic part and its lesions at contrast enhanced MRI using 3D-FIESTA-c sequence were observed. Results: 3D-FIESTA, unenhanced and enhanced 3D-FIESTA-c in number of the nerve bundle of anterior and posterior rootlets of the preganglionic nerve of the brachial plexus(C5～C8, T1) showed statistically significant. Unenhanced and enhanced 3D-FIESTA-c in number of the nerve bundle of anterior and posterior rootlets of the preganglionic nerve of the brachial plexus(C5～C8, T1) were more than 3D-FIESTA-c. And unenhanced and enhanced 3D-FIESTA-c in number of the nerve bundle of anterior and posterior rootlets of the preganglionic nerve of the brachial plexus(C5～C8, T1) had no statistical significance. The CNR of three sequences above were 39.44±6.65, 39.91±6.52, 25.92±6.95, respectively. The CNR of 3D-FIESTA, unenhanced and enhanced 3D-FIESTA-c in the preganglionic nerve of the brachial plexus showed statistically significant. The CNR of 3D-FIESTA, unenhanced 3D-FIESTA-c were more than enhanced 3D-FIESTA-c. And the CNR of 3D-FIESTA and unenhanced 3D-FIESTA-c had no statistical significance. Enhanced sequence 3D-FIESTA-c increased the muscle signal strength in the tissues of background, unfavorable to observe the normal brachial plexus preganglionic part and its lesions. Conclusion: Although unenhanced and enhanced 3D-FIESTA-c in number of the nerve bundle of anterior and posterior rootlets of the preganglionic nerve of the brachial plexus have no statistical significance. Due to their increased muscle signal strength in the tissues of background, the author thinks that it is good to perform 3D-FIESTA-c scanning before the enhancement.
关键词
臂丛 /
磁共振成像
Key words
Brachial plexus /
Magnetic resonance imaging
闫海龙;闫瑞芳;任继鹏;岳 巍;翟战胜;夏林峰;韩东明.
MR 3D-FIESTA-c序列增强扫描在臂丛节前神经成像的应用研究[J]. 中国临床医学影像杂志. 2015, 26(6): 385-390
YAN Hai-long;YAN Rui-fang;REN Ji-peng;YUE Wei;ZHAI Zhan-sheng;XIA Lin-feng;HAN Dong-ming.
The application research of enhanced 3D-FIESTA-c sequence MRI in displaying the preganglionic nerve of the brachial plexus[J]. Journal of China Clinic Medical Imaging. 2015, 26(6): 385-390
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