Considered by many to be the most relied-upon, practical text of its kind, this book is appreciated for its clear, concise writing, consistent format, and problem-based organization. This text cuts through complicated material to deliver the clearest and most comprehensive guide to sonography, leading students from the basics of imaging and positioning to more advanced clinical tips on instrumentation and report making. This 4th edition includes over 800 new black-and-white images and 48 full-color images. New chapters cover ankle problems, malpractice, laboratory accreditation, and ergonomics. Chapters on artifacts, interventional techniques, and shoulder sonography have been extensively revised.