Caldana Wanda Chiyoko Iwakami, Kodaira Sergio Keidi, Cavalcanti Conrado Furtado de Albuquerque, Rodrigues Marcelo Bordalo, Saito Osmar de Cassio, Buchpiguel Carlos Alberto
Instituto de Radiologia do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (InRad/HC-FMUSP), São Paulo, SP, Brazil.
Radiol Bras. 2018 Nov-Dec;51(6):358-365. doi: 10.1590/0100-3984.2017.0083.
To assess the accuracy of ultrasound in the visualization of the brachial plexus and to determine the value of the method in comparison with that of magnetic resonance imaging (MRI).
This was an anatomical study of the brachial plexuses of 20 asymptomatic adults (40 plexuses), comparing ultrasound and MRI in terms of their accuracy. In the ultrasound study, a high-frequency linear transducer was used, and a neurovascular coil was used in the MRI study. To estimate the frequency of visualization, the brachial plexus was divided into segments.
The cervical nerve roots, the upper trunk, and the middle trunk were the segments that were best visualized on ultrasound. On MRI, the degree of visualization was excellent for most of the segments. In the comparison between ultrasound and MRI, the C6, C7, upper trunk, and middle trunk segments showed equivalent degrees of visualization, with a high level of agreement between the two methods.
In the brachial plexus, ultrasound can be used in the assessment of the cervical nerve roots, as well as of the upper and middle trunks, although it provides limited visualization of the remaining segments. Ultrasound and MRI showed a high level of agreement for the visualization of the C6, C7, and middle trunk segments.
评估超声在显示臂丛神经方面的准确性，并确定该方法与磁共振成像（MRI）相比的价值。
这是一项对20名无症状成年人（40个臂丛神经）的臂丛神经进行的解剖学研究，比较超声和MRI的准确性。在超声研究中，使用高频线性换能器，在MRI研究中使用神经血管线圈。为了估计显示频率，将臂丛神经分为若干节段。
颈神经根、上干和中干是超声显示效果最佳的节段。在MRI上，大多数节段的显示程度极佳。在超声与MRI的比较中，C6、C7、上干和中干节段的显示程度相当，两种方法之间的一致性较高。
在臂丛神经方面，超声可用于评估颈神经根以及上干和中干，尽管它对其余节段的显示有限。超声和MRI在显示C6、C7和中干节段方面表现出高度一致性。
