Development and validation of MRI-based scoring models for predicting placental invasiveness in high-risk women for placenta accreta spectrum.

Objectives: To develop and validate MRI-based scoring models for predicting placenta accreta spectrum (PAS) invasiveness.

Materials And Methods: This retrospective study comprised a derivation cohort and a validation cohort. The derivation cohort came from a systematic review of published studies evaluating the diagnostic performance of MRI signs for PAS and/or placenta percreta in high-risk women.