A chest scan, typically done via CT or X-ray, provides detailed images of the lungs, heart, airways, and surrounding structures. It's commonly used to evaluate symptoms like persistent cough, chest pain, or shortness of breath, and can detect lung diseases, infections, tumors, and heart conditions. Chest scans are also useful in trauma cases to assess internal injuries. In advanced diagnostics, low-dose or ultra-low-dose CT technology helps minimize radiation exposure while maintaining image clarity. Physicians often use chest scans for early disease detection, treatment planning, or monitoring the progress of known conditions in both emergency and routine care.