Your doctor may advise a CT scan to provide detailed views of many types of tissue, including the lungs, bones, soft tissues and blood vessels. If you have suffered a stroke, a CT scan can find the blockage or bleeding in the brain that caused the stroke. It also allows your doctor to find both normal and abnormal structures in a painless, non-invasive and accurate manner.
A CT scan helps in the planning and preparation of certain surgeries including awake craniotomy (brain surgery to remove brain lesions) and deep brain stimulation surgery. It is also useful in the planning and guiding of radiotherapy (cancer treatment), needle biopsies and other minimally invasive operations.