Open AccessPlacenta previa – accreta: Do we need MR imaging?
Author(s) -
Soad Mansour,
Walid El-Khyat
Publication year - 2011
Publication title -
the egyptian journal of radiology and nuclear medicine /the egyptian journal of radiology and nuclear medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.19
H-Index - 13
eISSN - 2090-4762
pISSN - 0378-603X
DOI - 10.1016/j.ejrnm.2011.09.002
Subject(s) - placenta accreta , medicine , placenta previa , magnetic resonance imaging , obstetrics , ultrasound , placenta , gold standard (test) , predictive value , pregnancy , radiology , fetus , genetics , biology
ObjectiveTo determine whether magnetic resonance imaging has a considerable impact in the assessment of antenatal suspicion of placenta accreta.Subjects and methodsUltrasound and magnetic resonance imaging was performed for 35 gravid females with placenta previa prior to delivery. Delivery plan was made according to the imaging suggestion of the degree of placenta previa and the presence/absence of placenta accreta. Findings at cesarean section were considered the gold standard of reference.ResultsUltrasound had suggested true-positive diagnosis of accreta in 86.6% (n=13/15) and MRI in 93.3% (n=14/15). Matching between US and MRI findings took place in 75% (n=15/20) of the negative cases and in 80% (n=12/15) of the positive cases of placenta accreta in the studied cohort. Sensitivity, specificity, positive predictive value and negative predictive value of Ultrasound and MRI were 86.6%, 80%, 89%, 76.5% and 93.3%, 85%, 94.4%, 82.3% respectively regarding their ability to predict placenta accreta within high risk patients with placenta previa.ConclusionMagnetic resonance imaging hand in hand with Ultrasound is important for the accurate diagnosis of placenta previa and the seriously co-existing placenta accreta