本文選題：超聲檢查　切入點：產(chǎn)前　出處：《中國醫(yī)學(xué)影像技術(shù)》2017年05期 　論文類型：期刊論文

【摘要】：目的探討胸腺-胸廓比(T-T)評價胎兒胸腺發(fā)育的價值。方法對317名孕18~39周健康單胎妊娠孕婦行產(chǎn)前超聲檢查,于三血管-氣管(3VT)切面觀察正常胎兒胸腺特征,測量胸骨后緣至主動脈前緣的距離(T1)與胸骨后緣至椎體前緣的距離(T2),二者之比即為T-T值。繪制T-T值隨孕周變化的散點圖,并進(jìn)行Spearman回歸分析。結(jié)果 3VT切面顯示胎兒胸腺位于前上縱隔內(nèi),表現(xiàn)為一不規(guī)則"四邊形"低回聲實質(zhì)性結(jié)構(gòu)。正常胎兒T-T平均值為(0.45±0.03)。T-T值與孕周無相關(guān)性(r_s=0.06,P=0.29)。結(jié)論產(chǎn)前超聲檢查可清晰顯示胎兒胸腺,T-T值可用以評價胎兒胸腺大小,為胎兒胸腺缺如或發(fā)育不良提供診斷依據(jù)。
[Abstract]:Objective to evaluate the value of thymus-chest ratio (T-T) in evaluating the development of fetal thymus. Methods 317 pregnant women with 1839 weeks of gestation were examined by prenatal ultrasound, and the normal fetal thymus were observed on the three-vessel trachea 3VT section. The distance between the posterior sternum and the anterior aorta and the distance from the posterior sternum to the anterior border of the vertebral body were measured. The ratio of T to T was T-T value. Spearman regression analysis was performed. Results the fetal thymus was located in the anterior superior mediastinum on the 3VT section. The average T-T of normal fetus is 0. 45 鹵0.03).T-T. There is no correlation between T T value of normal fetus and gestational age. Conclusion the value of T T in fetal thymus can be clearly displayed by prenatal ultrasound examination, and can be used to evaluate the size of fetal thymus. To provide diagnostic basis for fetal thymus absence or dysplasia.
【作者單位】： 廣東省人民醫(yī)院廣東省醫(yī)學(xué)科學(xué)院超聲科;
【分類號】：R445.1;R714.5

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