title: The value of ultrasound and magnetic resonance imaging in diagnostics and prediction of morbidity in cases of placenta previa with abnormal placentation.
abstract: BACKGROUND
  The purpose of the study was to evaluate the role of ultrasound (US) and magnetic resonance imaging (MRI) in the diagnostics and management of abnormal placentation in women with placenta previa and to compare the morbidity associated with that to placenta previa alone.
  
  
  METHODS
  The study includes 100 pregnant women with placenta previa with and without abnormal placentation. The results of MRI and US in abnormal placentation were compared with post-operative data. The patients' files were reviewed for assessment of operative and post-operative morbidity. The results of our statistical analysis were compared with data from the literature.
  
  
  RESULTS
  US and MRI showed no significant difference in sensitivity and specificity in diagnosing abnormal placentation (97-100% and 94-100%, respectively). MRI was more sensitive than US for the detection of myometrial invasion and the type of abnormal placentation (73.5% and 47%, respectively). The difference between pre- and post-operative hemoglobin values and estimated blood loss were the most significant risk factors for abnormal placentation, added to risk factors known for placenta previa. Post-partum surgical complications and prolonged hospital stay were more common in the cases of placenta previa with abnormal placentation, however statistically insignificant.
  
  
  CONCLUSIONS
  US and MRI are accurate imaging modalities for diagnosing abnormal placentation. MRI was more sensitive for the detection of the degree of placental invasion. The patient's morbidity increased in cases with abnormal placentation. There was no significant difference in post operative-complications and hospitalization time due to pre-operative planning when the diagnosis was established with US and MRI.
authors.affiliation: Department of Radiology, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar.
authors.forename: Ahmed M
authors.initials: AM
authors.lastname: Algebally
authors.affiliation: Department of Radiology, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar.
authors.forename: Reda Ramadan Hussein
authors.initials: RR
authors.lastname: Yousef
authors.affiliation: Department of Radiology, Women's Hospital, Hamad Medical Corporation, Doha, Qatar.
authors.forename: Sanaa Sayed Hussein
authors.initials: SS
authors.lastname: Badr
authors.affiliation: Department of Radiology, Women's Hospital, Hamad Medical Corporation, Doha, Qatar.
authors.forename: Amal
authors.initials: A
authors.lastname: Al Obeidly
authors.affiliation: Department of Radiology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar.
authors.forename: Wojciech
authors.initials: W
authors.lastname: Szmigielski
authors.affiliation: Department of Gynecology and Obstetrics, Women's Hospital, Hamad Medical Corporation, Doha, Qatar.
authors.forename: Abdullah A
authors.initials: AA
authors.lastname: Al Ibrahim
keywords: Magnetic Resonance Imaging; Placenta Accreta; Placenta Diseases; Placenta Previa; Placentation; Ultrasonography, Doppler, Color