This ISUOG 2025 session, presented by Edgar A. Hernandez-Andrade, MD, PhD, focuses on the role of placenta accreta spectrum ultrasound in the prenatal diagnosis of PAS. The presentation examines how detailed assessment of placental vascularity can support identification of abnormal placental attachment and invasion.
The session reviews established ultrasound markers associated with placenta accreta spectrum, with emphasis on evaluation of the placental–myometrial interface and abnormal vascular patterns. Particular attention is given to visualization of low-velocity blood flow, which can provide additional information in suspected PAS cases.
A key topic of the webinar is the contribution of MV-Flow, which supports visualization of microvascular and low-velocity blood flow within the placenta. Examples demonstrate how enhanced depiction of placental vascularity may assist in interpreting abnormal findings when conventional Doppler assessment is limited.
The session also addresses the role of E-Cervix in evaluating cervical anatomy and its relevance in the broader assessment of patients at risk of PAS. Cervical findings are discussed in relation to placental location and surgical planning considerations.
Throughout the presentation, ultrasound is described as a central modality for prenatal diagnosis of PAS, supporting risk stratification and multidisciplinary planning. The importance of standardized scanning protocols and careful interpretation by experienced examiners is emphasized to improve diagnostic confidence and consistency.
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