X-ray machines generate high-energy electromagnetic waves to produce diagnostic images of bones, teeth, and internal organs. Hospitals use stationary radiography units for chest X-rays and extremity imaging, mobile/portable models for bedside exams in ICUs, and fluoroscopy systems for real-time catheter guidance. Digital detectors replace film for instant high-resolution images with 50-80% less radiation. Key components include X-ray tubes (tungsten anodes), generators (40-150 kV), collimators, and flat-panel detectors. Essential for fracture detection, pneumonia diagnosis, dental caries, and preoperative planning, they deliver 99% diagnostic accuracy when calibrated per AERB standards.