Difference between MRI and Ionising Radiation Images

Computer software analyses data derived from the weighting and allows the production of images in virtually any plane. The image shown is a cut-away MRI of the brain: 3D reconstruction.

Can you think of a major difference between the creation of MRI and ionising radiation images?

MRI is an image created by emission of data, while x-ray and CT rely on subtraction (shadowing) for the production of images. This allows MRI images to carry much more clarity and contrast. Furthermore, MRI can provide data on function as well as structure as a consequence of its ability to distinguish minute differences in chemical composition.

MRI can provide high-detail images in almost any plane.

The image shows the difference in clarity and contrast between an MRI (top) and an x-ray (bottom). Click on the image to enlarge.