Basic MRI Physics and Artifacts
In magnetic resonance imaging (MRI), strong magnetic fields are utilized to generate in vivo images reflecting specific chemical and physical properties of the tissue. Due to its diagnostic value, in combination with its non-invasive nature and the absence of ionizing radiation, MRI has become an important tool in modern health care. In this chapter, a brief introduction is given to the physics behind MRI, together with a description of common imaging and quantification techniques, as well as a summary of the most commonly occurring image artifacts.
KeywordsFlip Angle Excitation Pulse Magnetic Field Gradient Larmor Frequency Gradient Coil
- 1.Mitchell DG, Cohen MS. MRI principles. 2nd ed. Philadelphia, PA: Saunders; 2004.Google Scholar
- 2.Bernstein MA, King KF, Zhou XJ. Handbook of MRI pulse sequences. London: Academic; 2004.Google Scholar
- 3.Haacke EM, Brown RW, Thompson MR, Venkatesan R. Magnetic resonance imaging: physical principles and sequence design. New York: Wiley; 1999.Google Scholar
- 4.Gupta R, Feretti J, Becker E, Weiss G. A modified fast inversion-recovery technique for spin–lattice relaxation measurements. J Magn Reson. 1980;38:447–52.Google Scholar