How do we diagnose a Brain tumor?
Computed tomography, or CT scans, can be used to diagnose brain tumors. CT scanners use a series of x-rays and powerful computers to create 2 and 3-dimensional images of the body, including the brain.
Magnetic resonance imaging, or MRI, is probably the most common and useful tool for diagnosing and following brain tumors. MRI uses a powerful magnetic field to produce images of the brain. MRI does not use or produce radiation and therefore is not associated with radiation risks or effects. Ultrasound also does not produce radiation and instead uses high frequency soundwaves to image the brain and surrounding structures. Special MRI tools known as MR perfusion and functional MRI are performed at some centers and are important for differentiating brain tumors from normal tissue or irradiated brain tissue.