Diagnostic Value Of MRI In Brachial Plexus Postganglionic Injury

Objective To explore the imaging findings and clinical value of MRI in the diagnosis of brachial plexus postganglionic injuryData and methods Collecting16suspected brachial plexus postganglionic injury cases with different levels of sensation disorders, movement disorders and/or muscle atrophy etc. Preoperative, brachial plexus scan was underwent with Philips Achieva3.0T TX superconduction MR scanner, so did nervous electrophysiological examination intraoperative exploration. Compared MRI and electromyography with operation findings or clinical facts and calculated the accuracy of those two methods in diagnosing brachial plexus postganglionic injury, respectively, then made sure if there was any difference between those two accuracies with statistical methods.At the same time.The accuracies of MR I in diagnosing every nerves’s injury should be compared and made sure if there was any difference between every accuraciesResults Diagnostic ensibility, specificity, accuracy of rachial plexus postganglionic injury with MRI were94%,72%and83%. MRI signs of brachial plexus postganglionic injury:Nerves’s manifestation is normal as the uninjured side, with no abnormal in nerves’s zoneorsigns; the nerves were continuous, denatured and thickening, with or without hyper intense signs surrounding or oppression; Cicatricial tissue was formed, the nerves’s zone was tetanic and the nerves’s architecture was disorder, with or without hyper intense signs surrounding; Nodule was found in nerve root and traumatic neuroma was formed; Nerves’s architecture is disorder, discontinuous or obliterated.Diagnostic accuracy of nerve stem injury of brachial plexus with MR I were78%、85%、64%、93,%、93%(from C5to T1), respectively. Diagnostic accuracy of rachial plexus postganglionic injury with electromyography was80%. There was no statistical significance between electromyography and MR IConclusion Brachial plexus postganglionic and preoganglionic injury could be displayed at the same time in MRI with considerable accuracy, without wound or radiation.In addition, the diagnostic efficacy of different brachial plexus nerve stem injury was different.There was no statistical significance between electromyography and MR I (P>0.05), and MRI could be selected as the very first examination in the diagnosis of serious or acute brachial plexus postganglionic injury.It’s helpful for clinician to identify the tissual lesion in operative region, make operative plan in advance and identify the prognosis...