CT scan, also known as a computed tomography or CAT scan, is a painless imaging procedure that uses X-rays to create cross-sectional pictures of the inside of the body. CT scans provide more detailed images compared to conventional X-ray techniques and hence are mostly used to identify internal damage from vehicle accidents or trauma. They may also be used to guide radiation treatment, biopsies and other surgeries.CT scans may also be performed to identifyCancers or tumoursInternal bleedingAbnormal blood clotsHeart diseaseBone fractures.