title: Prenatal imaging of amniotic band sequence: utility and role of fetal MRI as an adjunct to prenatal US.
abstract: BACKGROUND
  Amniotic band sequence and its US manifestations have been well-described. There is little information, however, regarding the accuracy and utility of fetal MRI.
  
  
  OBJECTIVE
  To describe the MRI findings in amniotic band sequence and to compare the diagnostic accuracy of MRI and US.
  
  
  METHODS
  Prenatal MRI and US studies were retrospectively reviewed in 14 consecutive pregnancies with confirmed amniotic band sequence. Both studies were evaluated for amniotic band visualization, body part affected, type of deformity, umbilical cord involvement and vascular abnormality.
  
  
  RESULTS
  Amniotic bands were confidently identified with MRI in 8 fetuses (57%), suggested with MRI in 3 fetuses (21%) and confidently seen by US in 13 fetuses (93%). Neither modality detected surgically proven bands on one fetus. Both techniques were equally able to define the body part affected and the type of deformity. At least one limb abnormality was visualized in all cases and truncal involvement was present in two cases. Cord involvement was identified in seven cases, with one case detected only by MRI.
  
  
  CONCLUSIONS
  Fetal MRI is able to visualize amniotic bands and their secondary manifestations and could be complementary to prenatal US when fetal surgery is contemplated.
authors: Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA. jneuman@siuh.edu
authors: Jeremy
authors: J
authors: Neuman
authors: Maria A
authors: MA
authors: Calvo-Garcia
authors: Beth M
authors: BM
authors: Kline-Fath
authors: Constance
authors: C
authors: Bitters
authors: Arnold C
authors: AC
authors: Merrow
authors: Carolina V A
authors: CV
authors: Guimaraes
authors: Foong-Yen
authors: FY
authors: Lim
mesh_terms: D000328:Adult; D000652:Amniotic Band Syndrome / Q000175:diagnosis* / Q000000981:diagnostic imaging; D005260:Female; D005865:Gestational Age; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012189:Retrospective Studies; D018608:Ultrasonography, Doppler; D016216:Ultrasonography, Prenatal