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With or without? A retrospective analysis of intravenous contrast utility in magnetic resonance neurography.
Skeletal Radiology ( IF 2.1 ) Pub Date : 2019-11-06 , DOI: 10.1007/s00256-019-03321-x
Alan D Harrell 1 , Daniel Johnson 2 , Jonathan Samet 1, 3 , Imran M Omar 1 , Swati Deshmukh 1
Affiliation  

OBJECTIVE To determine the utility of intravenous contrast in magnetic resonance neurography (MRN). MATERIALS AND METHODS A search of our PACS for MRN studies performed in 2015 yielded 74 MRN exams, 57 of which included pre- and post-contrast images. All studies were independently reviewed by 3 musculoskeletal radiologists with peripheral nerve imaging experience for presence/absence of nerve pathology, presence/absence of muscle denervation, and contrast utility score based on a 4-point Likert scale. The medical record was reviewed for demographic and clinical data. RESULTS The mean contrast utility score across all readers and all cases was 1.65, where a score of 1 indicated no additional information and a score of 2 indicated mild additional information/supports interpretation. The mean contrast utility score was slightly higher in cases with a clinical indication of amputation/stump neuroma or mass (2.3 and 2.1 respectively) and lower in cases with a clinical indication of trauma (1.5). The mean contrast utility score was lowest in patients undergoing MRN for pain, numbness, and/or weakness (1.2). CONCLUSION Intravenous contrast provides mild to no additional information for the majority of MRN exams. Given the invasive nature of contrast and recent concerns regarding previously unrecognized risks of repetitive contrast exposure, assessment of the necessity of intravenous contrast in MRN is important. Consensus evidence-based practice guidelines regarding intravenous contrast use in MRN are necessary.

中文翻译:

有还是没有?磁共振神经造影中静脉造影剂效用的回顾性分析。

目的确定静脉造影剂在磁共振神经成像(MRN)中的应用。材料和方法在我们的PACS中搜索了2015年进行的MRN研究,结果产生了74项MRN检查,其中57项包括对比前后图像。所有研究均由3位具有骨骼神经影像学经验的肌肉骨骼放射科医生独立审查,以存在/不存在神经病理学,存在/不存在神经去神经支配以及基于4点Likert量表的对比效用评分。对病历进行了人口统计学和临床​​数据审查。结果所有读者和所有病例的平均对比效用得分为1.65,其中1分表示没有附加信息,而2分则表示轻微的附加信息/支持解释。在临床上有截肢/残端神经瘤或肿块的临床指征的平均对比效用得分略高(分别为2.3和2.1),在有临床上的创伤指征的情况下(1.5)。在进行MRN的疼痛,麻木和/或无力患者中,平均对比效用评分最低(1.2)。结论大部分MRN检查的静脉造影剂可提供轻度甚至无其他信息。考虑到造影剂的侵入性和最近对以前无法识别的重复造影剂暴露风险的担忧,评估MRN中静脉造影剂的必要性很重要。关于在MRN中使用静脉造影剂的共识性循证实践指南是必要的。分别为1)和临床上有创伤迹象的患者(1.5)。在进行MRN的疼痛,麻木和/或无力患者中,平均对比效用评分最低(1.2)。结论大部分MRN检查的静脉造影剂可提供轻度甚至无其他信息。考虑到造影剂的侵入性和最近对以前无法识别的重复造影剂暴露风险的担忧,评估MRN中静脉造影剂的必要性很重要。关于在MRN中使用静脉造影剂的共识性循证实践指南是必要的。分别为1)和临床上有创伤迹象的患者(1.5)。在进行MRN的疼痛,麻木和/或无力患者中,平均对比效用评分最低(1.2)。结论大部分MRN检查的静脉造影剂可提供轻度甚至无其他信息。考虑到造影剂的侵入性和最近对以前无法识别的重复造影剂暴露风险的担忧,评估MRN中静脉造影剂的必要性很重要。关于在MRN中使用静脉造影剂的共识性循证实践指南是必要的。考虑到造影剂的侵入性和最近对以前无法识别的重复造影剂暴露风险的担忧,评估MRN中静脉造影剂的必要性很重要。关于在MRN中使用静脉造影剂的共识性循证实践指南是必要的。考虑到造影剂的侵入性和最近对以前无法识别的重复造影剂暴露风险的担忧,评估MRN中静脉造影剂的必要性很重要。关于在MRN中使用静脉造影剂的共识性循证实践指南是必要的。
更新日期:2020-02-14
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