Imaging modalities in obstetrics and gynecology

The practicing emergency physician is often faced with the difficult decision of choosing the proper imaging modality in the diagnostic workup of pregnant and nonpregnant patients. This article discusses the basic tenets as well as the advantages and disadvantages of imaging modalities as they pertain to obstetric and gynecologic emergencies. Safety issues for the pregnant patient are discussed in depth to provide a practical policy to help guide emergency clinicians in common patient-care scenarios.