Department of Radiology, Duke University Medical Center, Durham, North Carolina, USA.
J Magn Reson Imaging. 2019 Aug;50(2):365-376. doi: 10.1002/jmri.26644. Epub 2019 Jan 11.
One of the more common and important challenges in the imaging of children is minimizing image degradation caused by motion. This is especially important in MRI, which is often preferable in the pediatric population due to better tissue characterization and lack of ionizing radiation. However, due to the length of time needed for most examinations, MRI is among the most sensitive to disruption by patient motion. Traditionally, deep conscious sedation or general anesthesia was the most common method of reducing motion in children who are unable or unwilling to follow direction. As the drawbacks and risks of anesthesia in children become more known and accepted, the development and optimization of means of mitigating motion and anxiety in children without the use of sedation or anesthesia becomes more urgent. In this article we describe the risks of sedation in the pediatric population and explore current methods of reducing both patient anxiety and imaging degradation from motion in the unsedated, free-breathing child. Level of Evidence: 5 Technical Efficacy: Stage 5 J. Magn. Reson. Imaging 2019;50:365-376.
在儿童成像中，一个比较常见且重要的挑战是尽量减少运动引起的图像质量下降。这在 MRI 中尤为重要，由于其具有更好的组织特征和无电离辐射，因此在儿科人群中通常更受欢迎。然而，由于大多数检查需要的时间较长，MRI 是最容易受到患者运动干扰的成像方式之一。传统上，深度镇静或全身麻醉是减少无法或不愿听从指令的儿童运动的最常见方法。随着人们对儿童麻醉的弊端和风险的认识和接受程度的提高，开发和优化无需镇静或麻醉即可减轻儿童运动和焦虑的方法变得更加紧迫。本文描述了镇静在儿科人群中的风险，并探讨了目前减少未镇静、自由呼吸儿童的患者焦虑和运动引起的图像质量下降的方法。证据等级：5 技术效果：5 级 J. Magn. Reson. Imaging 2019;50:365-376.
