前瞻性运动校正可提高儿科 MRI 扫描的诊断效用。
Prospective motion correction improves diagnostic utility of pediatric MRI scans.
出版信息
Pediatr Radiol. 2011 Dec;41(12):1578-82. doi: 10.1007/s00247-011-2205-1. Epub 2011 Jul 21.
Abstract
A new technique for prospectively correcting head motion (called PROMO) during acquisition of high-resolution MRI scans has been developed to reduce motion artifacts. To evaluate the efficacy of PROMO, four T1-weighted image volumes (two with PROMO enabled, two uncorrected) were acquired for each of nine children. A radiologist, blind to whether PROMO was used, rated image quality and artifacts on all sagittal slices of every volume. These ratings were significantly better in scans collected with PROMO relative to those collected without PROMO (Mann-Whitney U test, P < 0.0001). The use of PROMO, especially in motion-prone patients, should improve the accuracy of measurements made for clinical care and research, and potentially reduce the need for sedation in children.
摘要
已经开发出一种新的前瞻性校正头部运动（称为 PROMO）的技术，用于减少运动伪影，以获取高分辨率 MRI 扫描。为了评估 PROMO 的效果，对 9 名儿童的每个儿童分别采集了四组 T1 加权图像（两组启用了 PROMO，两组未校正）。一位放射科医生在不知道是否使用 PROMO 的情况下，对每个容积的所有矢状切片的图像质量和伪影进行了评分。与未使用 PROMO 采集的扫描相比，使用 PROMO 采集的扫描的评分明显更好（Mann-Whitney U 检验，P<0.0001）。在运动敏感的患者中使用 PROMO，应能提高临床护理和研究中测量的准确性，并可能减少对儿童镇静的需求。
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本文引用的文献
1
Prospective motion correction of high-resolution magnetic resonance imaging data in children.前瞻性运动校正在儿童高分辨率磁共振成像数据中的应用。
Neuroimage. 2010 Oct 15;53(1):139-45. doi: 10.1016/j.neuroimage.2010.06.017. Epub 2010 Jun 11.
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PROMO: Real-time prospective motion correction in MRI using image-based tracking.促销活动：使用基于图像的跟踪技术在磁共振成像中进行实时前瞻性运动校正。
Magn Reson Med. 2010 Jan;63(1):91-105. doi: 10.1002/mrm.22176.
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Sedation for pediatric patients undergoing CT and MRI.接受CT和MRI检查的儿科患者的镇静
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