One of the widely used modern methods of studying internal organs and surface structures is considered - ultrasound. Many articles have been written about this method, dozens of monographs have been published, hundreds of dissertations have been defended, but there is still no single international interpretation of visual information of the same pathology, especially diffuse lesions of parenchymal organs. The book is illustrated with 2,300 ultrasound photographs of the norm and pathology of organs. The book is intended for doctors and, first of all, for students of medical universities and universities.