This text provides a comprehensive review of ultrasound in thyroid and parathyroid diseases. These topics are presented from a vantage point of complex decision-making encountered in real clinical scenarios. The sections are organized according to a logical structure covering benign and malignant thyroid conditions, parathyroid disease, and ultrasound technology, ultrasound-guided interventions, and innovations. The style of the chapters provide practical, actionable information that is richly illustrated with figures and links to video cine-clips. The chapter topics aim to show how different specialists uniquely apply ultrasound in given clinical scenarios. The text illustrates the optimal incorporation of current practice guidelines, as this remains varied and inconsistent among clinicians. The content is written by invited experts who perform ultrasound in their daily clinical practices and participate in teaching ultrasound nationally and internationally. It conveys the most up-to-date scientific and clinical information in an interactive and visual format. Advanced Thyroid and Parathyroid Ultrasound fills a gap in currently available resources by serving as a single resource unifying information relevant to multiple specialists interested in advanced thyroid and parathyroid ultrasound. It provides a practical, concise yet comprehensive summary of the current status of the field that will help guide patient management.