目的:报告使用外固定器的患者在磁共振成像(MRI)过程中的不良事件。
方法:。
方法:回顾性病例系列。
方法:两个一级创伤中心。
■在2005年1月至2023年9月期间在阑尾骨骼或骨盆上使用外固定器的患者接受MRI检查。
■不良事件,定义为在成像过程中与外部固定器位于MRI孔内部或外部相关的任何不良事件,包括(主观)加热,外固定器的移位或拔出,或因任何原因提前终止MRI。
结果:共有97例患者使用110个外固定器进行了至少一次MRI扫描,其中外固定器位于MRI孔的内部或外部。中位年龄为51岁(四分位距:39-63),男性为56岁(58%)。最常见的外固定器位置是踝关节(24%),膝盖(21%),股骨(21%),和骨盆(19%)。MRI的中位持续时间为40分钟(四分位距:26-58),86%使用1.5特斯拉MRI,14%使用3.0特斯拉MRI进行。95%的MRI是针对颈椎/头部进行的。两次MRI扫描(1.6%),一个肩膀和一个头部和颈椎,由于患者不适,外固定器在钻孔外被提前终止。没有记录外固定器移位或拔出的事件。
结论:这些发现表明,对于在阑尾骨骼或骨盆上使用外固定器的患者,可以安全地获得(颈椎)脊柱和头部的MRI扫描。鉴于外固定器在钻孔内进行MRI扫描的次数较少,需要进一步的研究来确定该手术的安全性.这项研究的结果可以帮助整形外科医生,放射科医生,和其他利益相关者制定关于使用外部固定器进行MRI扫描的当地机构指南。
方法:预后III级。有关证据级别的完整描述,请参阅作者说明。
OBJECTIVE: To report on adverse events during magnetic resonance imaging (MRI) in patients with external fixators.
METHODS: .
METHODS: Retrospective case series.
METHODS: Two Level 1 trauma centers.
UNASSIGNED: Patients with external fixators on the appendicular skeleton or pelvis undergoing MRI between January 2005 and September 2023.
UNASSIGNED: Adverse events, defined as any undesirable event associated with the external fixator being inside or outside the MRI bore during imaging, including (subjective) heating, displacement or pullout of the external fixator, or early MRI termination for any reason.
RESULTS: A total of 97 patients with 110 external fixators underwent at least one MRI scan with an external fixator inside or outside of the MRI bore. The median age was 51 years (interquartile range: 39-63) and 56 (58%) were male. The most common external fixator locations were the ankle (24%), knee (21%), femur (21%), and pelvis (19%). The median duration of the MRI was 40 minutes (interquartile range: 26-58), 86% was performed using 1.5-Tesla MRI, and 14% was performed using 3.0-Tesla MRI. Ninety-five percent of MRI was performed for the cervical spine/head. Two MRI scans (1.6%), one of the shoulder and one of the head and cervical spine, with the external fixator outside of the bore were terminated early because of patient discomfort. There were no documented events of displacement or pullout of the external fixator.
CONCLUSIONS: These findings suggest that MRI scans of the (cervical) spine and head can be safely obtained in patients with external fixators on the appendicular skeleton or pelvis. Given the low numbers of MRI scans performed with the external fixator inside the bore, additional studies are necessitated to determine the safety of this procedure. The results from this study can aid orthopaedic surgeons, radiologists, and other stakeholders in developing local institutional guidelines on MRI scanning with external fixators in situ.
METHODS: Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.