医学
胎盘
弹性成像
胎儿
子宫内
产科
超声波
前瞻性队列研究
怀孕
胎儿体重
病态的
出生体重
妇科
内科学
放射科
生物
遗传学
作者
Tomoya Hasegawa,Naoaki Kuji,Fumiaki Notake,Tetsu Tsukamoto,Toru Sasaki,Motohiro Shimizu,Kazunori Mukaida,Hiroe Ito,Keiichi Isaka,Hirotaka Nishi
出处
期刊:Radiology and Oncology
[De Gruyter]
日期:2018-06-06
卷期号:52 (2): 129-135
被引量:9
标识
DOI:10.2478/raon-2018-0024
摘要
Abstract Background In this prospective cohort study, we examined the utility of elastography to evaluate the fetus and placenta. Patients and methods Pregnant women in their third trimester of pregnancy, by which time the placenta has formed, were included in this study. A total of 111 women underwent ultrasound examinations, including elastography. Elastographic evaluation was performed using two protocols. First, the placental index (PI) was measured, which quantitatively assesses the hardness of tissue. Second, regions of interest (ROI) were categorized into 3-step scores according to the frequency of the blue area (hardness of placental tissue score [HT score]), which is a qualitative method. After delivery, 40 of the 111 placentas were pathologically examined. Results The average PI was 44.3 (± 29.4) in the in utero SGA group, which was significantly higher than that in the normal group (8.8 (± 10.0); p < 0.01) during pregnancy. There was a significant correlation between the PI and z score for estimated fetal weight (EFW) ( r = -0.55; p < 0.01). Moreover, a significant positive correlation was observed between the PI and the z score of birth weight ( r = -0.39; p < 0.01). Pathological ischemia findings of the placenta were identified in 67% of the HT score 3 group, representing 6 of the 9 patients, and in 20% of the HT score 1 group, representing only 3 of the 15 patients. Conclusions Placental hardness, as determined by elastography, correlates with both lower estimated fetal body weight and birth weight. These results suggest that ultrasound elastography in the placenta may be an additional marker of intrauterine fetal well-being.
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