Book excerpt: The Pass Ultrasound Physics Study Guide Notes are comprehensive Test Prep Notes and are written to provide sound foundation to prepare for ARDMS SPI board exam. This book is devoted to the ARDMS SPI exam. The second edition of the bestselling Pass Ultrasound Physics Exam Study Guide Notes is divided into two volumes, Volume I and Volume II. The volume I covers the topics such as Pulse Echo Instrumentation, Ultrasound transducers, Sound beam, Bioeffects, Intensity, Resolution and Quality assurance. The volume II covers the topics such as Doppler physical principles, Doppler spectral analysis, Hemodynamics, propagation of ultrasound wave through tissues, Artifacts, Ultrasound physics elementary principles, and Real time imaging. The material is based on the ARDMS exam outline. It explains the concepts in very simple and easy to understand way. It also contains Important to Remember notes related to the topic which are SPI exam questions. You can increase your chances to pass Ultrasound Physics and Instrumentation exam by memorizing these Important to Remember notes. After studying these study guide notes you will feel confident and will be able to answer most of the questions easily which appear on the ARDMS Sonographic Principles and Instrumentation Exam.