Cesium iodide is a chemical compound made up of cesium and iodine, represented by the formula CsI. It is a white, crystalline solid that is highly soluble in water. This compound is often used in various applications, including medical imaging and radiation detection, due to its ability to efficiently convert X-rays into visible light. In addition to its uses in imaging, cesium iodide is also employed in the production of scintillation detectors. These detectors are important in fields such as nuclear physics and radiation safety, where they help measure and monitor radiation levels.