After reading this chapter, you should be able:
- To present the different parameters used to judge the quality of an image
- Describe the factors influencing the signal-to-noise ratio and their interdependence
- List the different MRI artifacts, their origin, effects on the image and ways of reducing them:
- Movements, phantom images, flow
- Magnetic susceptibility and metal artifacts
- Truncation / Gibb’s
- Folding / aliasing
- Chemical shift
- Cross-excitation
- Magic angle
- Present the basic criteria in MRI quality control
Summary