Characterization of Uterine Motion in Early Gestation Using MRI-Based Motion Tracking.
Characterization of Uterine Motion in Early Gestation Using MRI-Based Motion Tracking.
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DOI：
10.3390/diagnostics10100840
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发表时间：
2020-10-19
期刊：
影响因子：
--
通讯作者：
Sung K
中科院分区：
文献类型：
--
作者：
Martin T;Janzen C;Li X;Del Rosario I;Chanlaw T;Choi S;Armstrong T;Masamed R;Wu HH;Devaskar SU;Sung K
磁共振成像（MRI）是一种很有前景的非侵入性成像技术，可安全地用于研究胎盘的发育和功能。然而，通过MRI对人类胎盘进行的研究受到子宫运动的限制，并且在MRI过程中子宫内的运动仍然是主要的限制因素之一。在此，我们旨在利用基于MRI的运动追踪技术研究妊娠中期MRI过程中子宫活动的特征。共有46名孕妇接受了两次扫描（第一次扫描在14至18周之间，第二次扫描在19至24周之间），20名孕妇在孕龄14至18周之间进行了一次MRI检查，总共进行了112次MRI扫描。一种基于MRI的算法被用于追踪子宫在上下和左右方向的运动。专家将子宫收缩和母体运动的情况区分开来，并根据子宫活动的总体强度测量值，在孕龄（GA）、胎儿性别和胎盘位置的组内进行非配对的威尔科克森检验。在MRI过程中，总计22.3%的病例出现子宫收缩，从孕龄14 - 18周时的18.6%增加到19 - 24周时的26.4%。在妊娠早期，子宫收缩和母体运动的主要方向是从上到下。
Magnetic resonance imaging (MRI) is a promising non-invasive imaging technique that can be safely used to study placental development and function. However, studies of the human placenta performed by MRI are limited by uterine motion and motion in the uterus during MRI remains one of the major limiting factors. Here, we aimed to investigate the characterization of uterine activity during MRI in the second trimester of pregnancy using MRI-based motion tracking. In total, 46 pregnant women were scanned twice (first scan between 14 and 18 weeks and second scan between 19 and 24 weeks), and 20 pregnant subjects underwent a single MRI between 14 and 18 weeks GA, resulting in 112 MRI scans. An MRI-based algorithm was used to track uterine motion in the superior-inferior and left-right directions. Uterine contraction and maternal motion cases were separated by the experts, and unpaired Wilcoxon tests were performed within the groups of gestational age (GA), fetal sex, and placental location in terms of the overall intensity measures of the uterine activity. In total, 22.3% of cases had uterine contraction during MRI, which increased from 18.6% at 14–18 weeks to 26.4% at 19–24 weeks GA. The dominant direction of the uterine contraction and maternal motion was the superior to the inferior direction during early gestation.
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影响因子：
4.4
作者：
Armstrong, Tess;Liu, Dapeng;Wu, Holden H.
通讯作者：
Wu, Holden H.
DOI：
10.1111/j.1479-828x.1997.tb02242.x
发表时间：
1997-05-01
影响因子：
1.7
作者：
Dickinson, JE;Godfrey, M;Evans, SF
通讯作者：
Evans, SF
影响因子：
4.3
作者：
Sletten, Julie;Kiserud, Torvid;Kessler, Jorg
通讯作者：
Kessler, Jorg
影响因子：
2.3
作者：
Prayer, D;Brugger, PC;Prayer, L
通讯作者：
Prayer, L
影响因子：
2.5
作者：
Sørensen A;Sinding M;Peters DA;Petersen A;Frøkjær JB;Christiansen OB;Uldbjerg N
通讯作者：
Uldbjerg N