Virginia officials backed off last week from requiring vaginal ultrasounds before abortions, but state legislators are still expected to pass a bill that mandates abdominal ultrasounds and adds other significant requirements for women seeking abortions.

In recent years, this common diagnostic tool has taken a greater role in abortion-related legislation. Seven states require ultrasounds before abortions. Twenty states regulate some aspect of ultrasound exams, including requiring abortion providers to give women the option to view the image or listen to the fetal heartbeat if an ultrasound is performed.