Pavlova E, Markov D, Ivanov St
Akush Ginekol (Sofiia). 2014;53(2):11-7.
The objective of this study is to evaluate the potential of three-dimensional (3D) ultrasound identifying the fetal brain structures during second trimester and the time of offline analysis of brain volumes to perform a basic and a detailed fetal neurosonogram.
140 pregnant women were included in this study presented for a second trimester routine ultrasound scan in Medical Centre "Markovs", Sofia and the University Hospital in Obstetrics and Gynecology, Maichin dom, Sofia, Bulgaria. All pregnancies were singleton with no diagnosed fetal anomalies. 3D fetal brain volumes were obtained by transabdominal aquisition in the most suitable plane and analyzed later offline by two trained ultrasonologists with special software.
A standart systematic volume orientation was used to identify a list of brain structures and to complete basic evaluation, intracranial biometry and elected structures for detailed fetal neurosonogram. Diagnostic visualization was possible with excellent visualization rate in 91-100% in all brain structures for basic evaluation and in 76-100% for detailed targeted neurosonogram. An average number of 7 volumes was used to complete the examination by the two specialists. In this study a few limitation of the method are presented.
3D volume ultrasound is useful method for identification of fetal brain structures in second trimester. There are advantages in storage the digital information and for education.
本研究的目的是评估三维（3D）超声在孕中期识别胎儿脑结构的潜力，以及离线分析脑容量的时间，以进行基本和详细的胎儿神经超声检查。
本研究纳入了140名孕妇，她们在保加利亚索非亚的“马尔科夫斯”医疗中心和索非亚麦钦多姆妇产大学医院进行孕中期常规超声扫描。所有妊娠均为单胎，未诊断出胎儿异常。通过经腹采集在最合适的平面获取3D胎儿脑容量，随后由两名经过培训的超声科医生使用特殊软件进行离线分析。
采用标准的系统体积定位来识别一系列脑结构，并完成基本评估、颅内生物测量以及为详细的胎儿神经超声检查选择结构。在所有脑结构中，基本评估的诊断可视化率为91%-100%，详细的靶向神经超声检查的可视化率为76%-100%，诊断可视化是可行的。两位专家平均使用7个容积来完成检查。本研究提出了该方法的一些局限性。
三维容积超声是孕中期识别胎儿脑结构的有用方法。在存储数字信息和教育方面有优势。
