Morgan C L, Trought W S, Haney A, Clark W M
J Clin Ultrasound. 1979 Apr;7(2):108-14. doi: 10.1002/jcu.1870070206.
Real-time ultrasound is a dynamic imaging technique that allows in utero orientation to the fetus. It permits rapid and efficient examination of fetal anatomy and provides a dynamic assessment of fetal well-being. The energy dissipation can be comparable to that in conventional ultrasonic B-mode scanning. We have used both linear and dynamically focused phased arrays for fetal examinations in conjunction with conventional gray scale B-mode scanners. The sophisticated phased-array real-time systems have demonstrated higher resolution and an improved gray scale as compared with the linear arrays. Applications of real-time ultrasound in obstetrics are discussed, and appropriate clinical examples are cited that illustrate the value of the technique for study of both normal and abnormal fetal development. We believe that this technique is the most sensitive method of detecting intrauterine fetal demise. The relative advantages and disadvantages of linear and dynamically focused phased arrays in obstetric evaluation are considered.
实时超声是一种动态成像技术，可在子宫内对胎儿进行定位。它能快速有效地检查胎儿解剖结构，并对胎儿健康状况进行动态评估。能量耗散与传统超声B型扫描相当。我们将线性和动态聚焦相控阵与传统灰阶B型扫描仪结合用于胎儿检查。与线性阵列相比，先进的相控阵实时系统具有更高的分辨率和更好的灰阶表现。文中讨论了实时超声在产科的应用，并列举了合适的临床实例来说明该技术在研究正常和异常胎儿发育方面的价值。我们认为该技术是检测宫内胎儿死亡最敏感的方法。文中还考虑了线性和动态聚焦相控阵在产科评估中的相对优缺点。
