title: Placental vascularity and resorption delay after conservative management of invasive placenta: MR imaging evaluation.
abstract: OBJECTIVE
  To assess the potential of magnetic resonance (MR) imaging in evaluating placental vascularity and predicting placental resorption delay after conservative management of invasive placenta.
  
  
  METHODS
  MR examinations of 23 women with conservative management of invasive placenta were reviewed. Twelve women had pelvic embolisation because of postpartum haemorrhage (Group 1) and 11 had no embolisation (Group 2). Comparisons between the two groups were made with respect to the delay for complete placental resorption at follow-up MR imaging and degree of placental vascularity 24 h after delivery on early (30s) and late (180 s) phase of dynamic gadolinium chelate-enhanced MR imaging.
  
  
  RESULTS
  The median delay for complete placental resorption in the cohort study was 21.1 weeks (range, 1-111 weeks). In Group 1, the median delay for complete placental resorption was shorter than in Group 2 (17 vs 32 weeks) (P = 0.036). Decreased placental vascularity on the early phase was observed in Group 1 by comparison with Group 2 (P = 0.003). Significant correlation was found between the degree of vascularity on early phase of dynamic MR imaging and the delay for complete placental resorption (r = 0.693; P < 0.001).
  
  
  CONCLUSIONS
  MR imaging provides useful information after conservative management of invasive placenta and may help predict delay for complete placental resorption.
authors: Department of Abdominal and Interventional Imaging, Hôpital Lariboisière, Assistance Publique-Hôpitaux de Paris, 2 rue Ambroise Paré, 75475, Paris Cedex 10, France. philippe.soyer@lrb.aphp.fr
authors: Philippe
authors: P
authors: Soyer
authors: Marc
authors: M
authors: Sirol
authors: Yann
authors: Y
authors: Fargeaudou
authors: Laurence
authors: L
authors: Bour
authors: Olivier
authors: O
authors: Morel
authors: Anthony
authors: A
authors: Dohan
authors: Mourad
authors: M
authors: Boudiaf
authors: Etienne
authors: E
authors: Gayat
authors: Delphine
authors: D
authors: Hequet
authors: Emmanuel
authors: E
authors: Barranger
authors: Olivier
authors: O
authors: le Dref
mesh_terms: D000328:Adult; D003287:Contrast Media; D036861:Delivery, Obstetric; D004621:Embolization, Therapeutic; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008536:Meglumine; D009942:Organometallic Compounds; D010921:Placenta Accreta / Q000175:diagnosis* / Q000628:therapy*; D021041:Placental Circulation; D006473:Postpartum Hemorrhage / Q000628:therapy; D011247:Pregnancy; D012189:Retrospective Studies; D018709:Statistics, Nonparametric; D016896:Treatment Outcome
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; D008536:Meglumine; C072417:gadoterate meglumine