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Diffusion lacunae and T2 dark bands in placenta accreta spectrum: MR-pathologic correlation
Shinya Fujii1, Yuko Iraha2, Kanae Ozaki3
1Division of Radiology, Department of Multidisciplinary Internal Medicine, Faculty of Medicine, Tottori University, Tottori, Japan.
Acta Radiologica Open
|March 2, 2026
Summary
Diffusion lacunae and T2 dark bands on MRI may indicate sequential stages of placental pathology in placenta accreta spectrum (PAS). This finding aids in understanding PAS development and diagnosis.
Area of Science:
- Radiology
- Pathology
- Obstetrics
Background:
- Placenta accreta spectrum (PAS) presents diagnostic challenges.
- Accurate prenatal diagnosis is crucial for managing PAS, especially in women with placenta previa and prior cesarean delivery.
- MRI is increasingly used for PAS evaluation.

