There are several books available on breast ultrasound, but one highly recommended book is "Breast Ultrasound" by Catherine Giess. This comprehensive text covers all aspects of breast ultrasound imaging, including technique, interpretation, and clinical applications. The book also includes case studies and examples to help readers understand how to apply ultrasound in clinical practice. Overall, "Breast Ultrasound" by Catherine Giess is a valuable resource for radiologists, sonographers, and other healthcare professionals looking to enhance their knowledge and skills in breast imaging.