The book is based on the materials of our own research and the practical experience of the authors in the integrated use of the latest methods of multiparametric ultrasound in the diagnosis of diffuse changes, focal pathology of the thyroid gland. Various diseases are highlighted in terms of age and clinical manifestations, echography technologies using contrast agents, ultrasound aspects during diagnostic punctures under ultrasound control are detailed, the experience of other domestic and foreign researchers is analyzed. Particular attention is paid to the technique and methodology of echography, the options for imaging the unchanged thyroid gland are highlighted, the emphasis is placed on early diagnosis of focal and diffuse pathology, differential diagnosis of tumors, practical use of gradations of focal pathology of the thyroid gland according to the TI-RADS, Bethesda classification. The publication is well illustrated. There are a large number of diagrams, tables, figures, echograms. For ultrasound specialists, endocrinologists, oncologists, surgeons, therapists, medical students, postgraduate cadets.