The book "Principles and Practices of Diagnostic Ultrasonography" by Dr. P.K. Tiwari focuses on the fundamental techniques and procedures used in ultrasound imaging. It covers an in-depth understanding of sonographic terminology and reporting formats, including the use of keywords like echogenic, anechoic, hypoechoic, and hyperechoic to describe tissue characteristics. The reporting format often adheres to the guidelines of CBT (Computer-Based Testing) and PNDT (Pre-Conception and Pre-Natal Diagnostic Techniques) exams. A sample report may include patient details, clinical findings, images, and diagnostic interpretation. The text provides detailed explanations and reports on abnormal ultrasound findings across various areas, including NT (Nuchal Translucency), NB (Nasal Bone), Level II scans, scrotum, breast, thyroid and musculoskeletal (MSK) systems imaging. These insights support healthcare professionals in accurate diagnosis and decision-making.