The image appears to be a page from a book or document, specifically focusing on "3. Trường hợp xác định." This translates to "3. Case Determination" in English. The page contains text in Vietnamese and illustrations of medical procedures and equipment. The text discusses various medical procedures and their applications, with illustrations of medical devices and procedures such as blood tests, X-rays, and other diagnostic tools. The page seems to be part of a medical textbook or reference guide for healthcare professionals.