Key Features High-resolution ultrasound has established as an excellent imaging modality for evaluation of small part. With the innovation of 3D ultrasound and tomographic ultrasound imaging, it provides excellent tissue details in multi-sectional and cross-sectional anatomy as seen in CT and MRI. The spatial resolution of ultrasound is better than CT and MRI. The tissue characterization of small parts of infant brain, eye and orbit, neck, thyroid, salivary glands, face is much better than costly imaging modalities like CT and MRI. It is also choice of investigation for evaluation of peripheral chest, breast and GIT. Transrectal ultrasound with cross-sectional imaging of prostate gives excellent anatomical details of prostate and with TUI imaging small lesions with 2 mm size can be easily picked up. High-resolution ultrasound is first line of investigation for evaluation of sperm transport system and in difficult clinical situations like ambiguous genitalia and intersex. It is also recommended modality for evaluation of anterior abdominal wall pathologies. This is the first Atlas of Small Parts Ultrasound with Color Flow Imaging having more than 4,500 images in the world literature.