During magnetic resonance angiography, you lie flat inside the magnetic resonance imaging scanner. This is a large, tunnel-like tube. In some cases, a special dye, known as contrast, may be added to ...

In large doses, radiation can cause serious tissue damage and increase a person’s risk of later developing cancer. The low doses of radiation used for imaging tests might increase a person’s cancer ...

The principles underlying nuclear magnetic resonance (NMR) are explained, and its use in image formation is described. The discussion also covers: multislice imaging; image resolution and contrast; ...