Four-dimensional (4D) imaging is an advanced diagnostic technology that combines three-dimensional images with real-time motion, providing a dynamic view of organs and tissues inside the body. This technology is used to diagnose medical conditions with greater accuracy, as it allows live monitoring of changes occurring in tissues or organs, helping to evaluate vital organ functions such as the heart or blood vessels in a dynamic manner. 4D imaging is also used to monitor disease progression, such as tumors or changes in soft tissues, and to develop precise treatment plans based on moving data.