The image is a screenshot from a medical presentation or lecture, likely related to radiology or medical imaging. The background features a computer monitor displaying an image of a patient's chest with various medical equipment and diagnostic tools. The text on the screen is in Vietnamese and appears to be discussing PET-CT (Positron Emission Tomography-Computed Tomography) and Co-64 Dubatun. The speaker is wearing a white lab coat and appears to be explaining something related to medical imaging technology. The overall setting suggests a professional medical environment, possibly a hospital or medical school.