Can an MRI scan miss a pinched nerve?
问： MRI 扫描会不会发现不了神经受压？
A magnetic resonance imaging (MRI) scan is not always necessary to diagnose sciatica, but it can be used to assess the anatomy of the spine. An MRI scan provides detailed 3-dimensional views of spinal bones and tissues, and is particularly good at picking up problems where the nerves are being pinched. However, no single imaging technique is 100% accurate and each has its limitations. An MRI is done with the patient lying on their back (supine). In this position, the spine is not loaded in the same way as when it is upright. Some nerve impingements only occur in the upright position, and the MRI scan might miss those.
答：   磁共振成像 (MRI) 扫描并非诊断坐骨神经痛所必需进行的检查项目，但它可用于评估脊柱的解剖结构。MRI 扫描可提供脊骨和组织的详细三维视图，尤其适合用于发现在神经受压部位的问题。 但是，没有一种成像技术是 100% 准确的，每种技术都有其局限性。MRI 在患者平躺（仰卧）时进行。在该姿势下，脊柱的负重方式与直立时不同。某些神经压迫仅发生在直立姿势，因此 MRI 扫描可能会遗漏此类情况。