From the Department of Radiology and Imaging (F.A., E.T.T., J.L.C., D.B.S.) and Department of Spine Surgery (F.A., D.R.L.), Hospital for Special Surgery, 535 E 70th St, New York, NY 10021.
Radiology. 2023 Jul;308(1):e222732. doi: 10.1148/radiol.222732.
Postoperative MRI of the lumbar spine is a mainstay for detailed anatomic assessment and evaluation of complications related to decompression and fusion surgery. Key factors for reliable interpretation include clinical presentation of the patient, operative approach, and time elapsed since surgery. Yet, recent spinal surgery techniques with varying anatomic corridors to approach the intervertebral disc space and implanted materials have expanded the range of normal (expected) and abnormal (unexpected) postoperative changes. Modifications of lumbar spine MRI protocols in the presence of metallic implants, including strategies for metal artifact reduction, provide important diagnostic information. This focused review discusses essential principles for the acquisition and interpretation of MRI after lumbar spinal decompression and fusion surgery, highlights expected postoperative changes, and describes early and delayed postoperative complications with examples.
腰椎术后 MRI 是详细解剖评估和减压融合手术相关并发症评估的主要手段。可靠解读的关键因素包括患者的临床表现、手术入路以及术后时间。然而，最近的脊柱手术技术具有不同的解剖通道来接近椎间盘间隙和植入材料，这扩大了正常（预期）和异常（意外）术后变化的范围。在存在金属植入物的情况下，对腰椎 MRI 方案进行修改，包括减少金属伪影的策略，提供了重要的诊断信息。本重点综述讨论了腰椎减压融合术后 MRI 的采集和解读的基本原则，强调了预期的术后变化，并通过示例描述了早期和晚期术后并发症。
