For many situations, MRI is the preferred diagnostic tool -- especially for brain imaging, although CT scan is still chosen for strokes because it is better at detecting hemorrhage. The drawback ...

Cancer diagnosis frequently requires imaging studies that in many cases use small amounts of radiation. Procedures such as X-rays; computed tomography (CT); magnetic resonance imaging (MRI); positron ...

Do I need yet another CT examination? You can help avoid unnecessary repeat examinations by telling your doctor about previous examinations (X ray, CT, MRI, ultrasound and other imaging examinations) ...