This updated 2nd Edition of Examination Review for Ultrasound: Sonographic Principles & Instrumentation helps students prepare for--and excel on-- the Sonography Principles and Instrumentation (SPI) certification examination offered by the ARDMS. Taking a concise, narrative approach, this proven resource aligns with the SPI revised content outline and format. An online exam simulator with registry-style questions makes it easy to create mock exams that allow unlimited practice.