Rajeswaran Rangasami, Chandrasekharan Anupama, Joseph Santhosh, Venkata Sai P M, Dev Bhawna, Reddy Sanjeeva
Department of Radiology and Imaging Sciences, Sri Ramachandra Medical College and Research Institute, Sri Ramachandra University, Chennai, India.
J Matern Fetal Neonatal Med. 2009 Feb;22(2):115-23. doi: 10.1080/14767050802488238.
To compare antenatal sonography and magnetic resonance (MR) imaging (MRI) in the diagnosis of fetal head and trunk anomalies.
Forty pregnant women with fetal anomalies on ultrasound (US) examination underwent MRI. The MR examination was done by a radiologist who was provided with the US data. The MR images were then read by one of the two radiologists who were blinded to the US data. They were however told that the region of interest was (1) head-neck or (2) trunk or (3) both. Antenatal US and MRI findings were compared with postnatal diagnosis. Postnatal evaluation included plain radiograph, US, computed tomography, MRI, surgery, physical evaluation and autopsy.
Sixty anomalies were detected in the 40 women studied. This included 36 central nervous system (CNS), 7 thoracic, 7 gastrointestinal, 8 genitourinary and 2 face-neck anomalies. In the evaluation of CNS and thoracic anomalies, more number of confident diagnoses could be obtained by MRI when compared with that by US. In the detection of gastrointestinal and genitourinary anomalies, there was no significant difference between the two modalities.
More number of confident diagnoses could be obtained by MRI when compared with that by US, in the evaluation of fetal CNS and thoracic anomalies. MRI can be used in complex fetal anomalies as a supplementary tool following US.
比较产前超声检查与磁共振成像（MRI）在诊断胎儿头部和躯干异常中的应用。
40例超声（US）检查发现胎儿异常的孕妇接受了MRI检查。MR检查由一位已获得US数据的放射科医生进行。然后，由两位对US数据不知情的放射科医生之一阅读MR图像。不过，他们被告知感兴趣的区域为（1）头颈或（2）躯干或（3）两者。将产前US和MRI检查结果与产后诊断结果进行比较。产后评估包括X线平片、US、计算机断层扫描、MRI、手术、体格检查和尸检。
在研究的40例女性中检测到60处异常。其中包括36处中枢神经系统（CNS）异常、7处胸部异常、7处胃肠道异常、8处泌尿生殖系统异常和2处面颈部异常。在评估CNS和胸部异常时，与US相比，MRI能获得更多确切的诊断。在检测胃肠道和泌尿生殖系统异常方面，两种检查方式之间没有显著差异。
在评估胎儿CNS和胸部异常时，与US相比，MRI能获得更多确切的诊断。MRI可作为US之后用于复杂胎儿异常的辅助工具。
