Levine D
Radiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02215, USA.
Curr Opin Pediatr. 2001 Dec;13(6):572-8. doi: 10.1097/00008480-200112000-00014.
Ultrasound is the screening modality of choice for fetal imaging. However, when additional information regarding fetal anatomy or pathology is needed, fast magnetic resonance (MR) imaging is being used increasingly as a correlative imaging modality because it uses no ionizing radiation, provides excellent soft tissue contrast, has multiple planes for reconstruction, and a large field of view. Sonographic examination of the fetus is still important for selecting the appropriate fetuses for MR examination and to guide the protocol of the examination. Performance of high quality sonographic and MR examinations, as well as interpretation by individuals familiar with prenatal diagnosis, are important factors for optimal parental counseling. Magnetic resonance imaging frequently adds additional information beyond that available with ultrasound. This information commonly changes patient counseling, and at times patient management.
超声是胎儿成像的首选筛查方式。然而，当需要有关胎儿解剖结构或病理状况的更多信息时，快速磁共振（MR）成像作为一种相关成像方式的应用越来越多，因为它不使用电离辐射，能提供出色的软组织对比度，有多个重建平面且视野广阔。对胎儿进行超声检查对于选择适合进行MR检查的胎儿以及指导检查方案仍很重要。高质量的超声和MR检查以及由熟悉产前诊断的人员进行解读，是为父母提供最佳咨询的重要因素。磁共振成像常常能提供超声之外的更多信息。这些信息通常会改变对患者的咨询内容，有时还会改变患者的治疗管理。
