本文選題：胎兒 + 孕周��； 參考：《山東大學(xué)》2014年碩士論文

【摘要】：目的 探討MRI成像技術(shù)在評(píng)估胎兒中晚期妊娠正常肺臟發(fā)育及成熟度的臨床應(yīng)用價(jià)值 材料與方法 回顧性分析本所自2005年12月份起至2013年12月份5892例行磁共振檢查的中晚期妊娠(18至40周)的單活胎兒,篩選其中經(jīng)超聲和磁共振檢查顯示雙側(cè)胎兒肺臟發(fā)育正常且磁共振圖像顯示胎兒雙側(cè)肺臟清晰完整(以冠狀位為主)的1286例胎兒,在SIMENSE磁共振后處理工作站,采用描點(diǎn)法測(cè)量胎兒肺臟每層截面積并結(jié)合掃描層厚層間距通過計(jì)算軟件得出胎兒左肺體積、右肺體積及胎兒肺總體積數(shù)值,并選取感興趣區(qū)分別測(cè)量胎兒肺臟及肝臟的信號(hào)強(qiáng)度,計(jì)算肺肝信號(hào)比,對(duì)數(shù)據(jù)進(jìn)行統(tǒng)計(jì),得到中晚期妊娠不同孕周正常胎兒左肺體積、右肺體積、肺總體積及肺肝信號(hào)比的正常值范圍,并顯示其與孕周的相關(guān)曲線。 結(jié)果 在中晚期妊娠正常胎兒中,隨著孕周的增加胎兒右肺體積、左肺體積及肺總體積逐漸增加,呈線性正相關(guān)；而肺肝信號(hào)比則隨著孕周的增加逐漸降低。相同孕周下胎兒右肺體積略大于左肺體積。 結(jié)論 磁共振檢查不僅可以清晰準(zhǔn)確顯示胎兒肺臟的邊緣及細(xì)微結(jié)構(gòu),而且可以量化評(píng)估肺臟的發(fā)育及成熟度,是胎兒呼吸系統(tǒng)檢查的重要檢查方法。
[Abstract]:Purpose To evaluate the clinical value of MRI imaging in evaluating the normal lung development and maturity of late fetal pregnancy Materials and methods A retrospective analysis of the single live foetus from December 2005 to December 2013 in 5892 cases of intermediate and late pregnancy (18 to 40 weeks) underwent magnetic resonance imaging (MRI). Among them, 1286 fetuses with normal development of bilateral fetal lungs and clear and complete bilateral lungs (mainly coronal position) were screened by ultrasonography and magnetic resonance imaging (MRI) postprocessing workstation. The cross sectional area of each layer of fetal lung was measured by drawing point method, and the values of left lung volume, right lung volume and total fetal lung volume were obtained by calculating software combined with scanning thick layer spacing. The signal intensity of fetal lung and liver were measured in the region of interest, and the signal ratio of lung and liver was calculated. The data were calculated, and the normal left lung volume and right lung volume of fetus were obtained in different gestational weeks of middle and late pregnancy. The normal range of lung volume and lung / liver signal ratio and the correlation curve between lung volume and gestational week were shown. Result In normal fetuses of middle and late pregnancy, with the increase of gestational weeks, the volume of left lung and the total volume of lung increased gradually, showing a linear positive correlation, while the ratio of lung and liver signal decreased with the increase of gestational week. The fetal right lung volume was slightly larger than the left lung volume at the same gestational week. Conclusion Magnetic resonance imaging not only can clearly and accurately display the edge and fine structure of fetal lung, but also can quantitatively evaluate the development and maturity of the lung. It is an important examination method for fetal respiratory system examination.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：R714.5;R445.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 徐佰成,宋伊麗;超聲診斷胎兒泌尿系畸形的探討[J];上海醫(yī)學(xué)影像;2004年03期

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本文編號(hào)：1878891