Basic Principles of Magnetic Resonance Imaging
Magnetic resonance imaging (MRI) is a non-ionising, and generally non-invasive, imaging modality capable of producing detailed soft-tissue images in all body areas. This chapter initially describes the basic principles of MRI starting with the phenomenon of nuclear magnetisation and tissue relaxation. The concept of spatial localisation using magnetic field gradients is then explained, followed by a description of the hardware that comprises a typical MRI system. Finally, the standard MRI pulse sequences are introduced together with an explanation of some of the current techniques used to obtain high-quality morphological and functional images of the vessel wall.
KeywordsMagnetic resonance imaging Basic principles Hardware Pulse sequences
- 11.Wang J, Yarnykh VL, Hatsukami T, Chu B, Balu N, Yuan C. Improved suppression of plaque-mimicking artifacts in black-blood carotid atherosclerosis imaging using a multislice motion-sensitized driven-equilibrium (MSDE) turbo spin-echo (TSE) sequence. Magn Reson Med. 2007;58:973–81.CrossRefPubMedGoogle Scholar
- 15.Cai J, Hatsukami TS, Ferguson MS, et al. In vivo quantitative measurement of intact fibrous cap and lipid-rich necrotic core size in atherosclerotic carotid plaque: comparison of high-resolution, contrast-enhanced magnetic resonance imaging and histology. Circulation. 2005;112:3437–44.CrossRefPubMedGoogle Scholar