The program contains 1084 flashcards that will help you study and pass the ARDMS Breast boards to become a Registered Diagnostic Medical Sonographer specialized in breast. Here are the topics and flashcards included in this program: Instrumentation - 114 flashcards. Anatomy - 140 flashcards. Mammography - 87 flashcards. Locating lesions via mammography - 39 flashcards.