Basic principles of magnetic resonance imaging--an update.

摘要: Magnetic resonance (MR) imaging technology has undergone many technologic advances over the past few years. Many of these were stimulated by wealth information emerging from nuclear magnetic research in areas new and optimal scanning methods radio-frequency coil design. Other changes arose desire to improve image quality, ease siting restrictions generally facilitate clinical use MR equipment. questions, however, remain unanswered. Perhaps most controversial question involves field strength required for or spectroscopic applications both. issues include safety efficacy. Technologic affect all aspects including choice equipment, examination procedure interpretation. Thus, an understanding recent their theoretic basis is necessary.