Placental abruption is implicated in 15 to 25% of perinatal deaths. It is also the cause of approximately 30% of third trimester bleeding. While the diagnosis of placental abruption is primarily a clinical one, imaging can be a crucial component in identifying the process.
Clinical presentation:
The classical presentation of placental abruption is vaginal bleeding (>80% of patients) and abdominal pain (>50% of patients), however, presentations can vary widely.
Diagnostic Imaging:
Ultrasound
Ultrasonography is the most accurate and practical radiologic study in evaluation of placental abruption
Computed Tomography
In cases of blunt abdominal trauma, CT is the most sensitive and specific diagnostic tool
MRI
May show growing use for this condition
Limited data is available in current radiology literature for the diagnosis and monitoring of placental abruption. Review of the imaging findings may aid in accurate diagnosis and prove crucial in decreasing morbidity and mortality.
Hosein, H,
Imaging of Placental Abruption. Radiological Society of North America 2007 Scientific Assembly and Annual Meeting, November 25 - November 30, 2007 ,Chicago IL.
http://archive.rsna.org/2007/5016565.html