X-RAY's KIN is a term used to refer to two medical imaging techniques, SCAN and CATSCAN. SCAN stands for Single Photon Emission Computed Tomography and is a type of nuclear imaging test that uses a small amount of radioactive material to create detailed images of the body. CATSCAN stands for Computerized Axial Tomography and is a type of imaging test that uses X-rays to create detailed cross-sectional images of the body. Both of these imaging techniques are used to diagnose and monitor a variety of medical conditions.