ARDMS Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

The Sonography Principles and Instrumentation (SPI) exam focuses primarily on the physics of ultrasound and instrumentation because a strong understanding of these principles is vital for the practice of diagnostic medical sonography. This encompasses knowledge of how ultrasound waves are generated, transmitted, and received, as well as the characteristics of ultrasound equipment and how different settings affect image quality and diagnostic yield. Mastery of these concepts enables sonographers to effectively operate imaging machines, troubleshoot issues, and optimize protocols for various examinations.

While patient care techniques, ethics and legal issues, and diagnostic imaging analysis are essential components of the broader field of sonography, the SPI exam specifically emphasizes the scientific principles underpinning ultrasound technology, making it a foundational aspect of a sonographer's training. Understanding the physics and instrumentation is crucial to ensuring accurate imaging and safe practices in patient care.