"Accurate prenatal diagnosis of placenta accreta is vital because this abnormality is an important cause of significant haemorrhage in the immediate post-delivery period with resultant maternal and fetal morbidity and mortality. However, the diagnosis is not often made prospectively. The combination of a previous caesarean section and an anterior placenta praevia is the strongest risk factor for placenta accreta 16."
"MRI "
"diffuse or focal disruption of the T2-hypointense retroplacental line (representing loss of the placental–inner myometrial interface)"
"Magnetic resonance imaging is reliable in the diagnosis of placenta accreta when performed after 24 weeks gestation 11, especially in women who have equivocal ultrasound findings 12. In women with a posterior placenta, MRI demonstrates superior diagnostic accuracy compared with ultrasound for detecting placenta accreta 13. Specific fast acquisition sequences (e.g. HASTE, true FISP) help to minimise fetal and maternal motion artifacts."
"technical setting: with the PRF set >15 cm/s, hypervascularity can be diagnosied more reliably 15"
Expected headings
"MRI "
"Complications"
"Magnetic resonance imaging is reliable in the diagnosis of placenta accreta when performed after 24 weeks gestation 11, especially in women who have equivocal ultrasound findings 12. In women with a posterior placenta, MRI demonstrates superior diagnostic accuracy compared with ultrasound for detecting placenta accreta 13. Specific fast acquisition sequences (e.g. HASTE, true FISP) help to minimise fetal and maternal motion artifacts."