TY - CHAP M1 - Book, Section TI - Chapter 65. Musculoskeletal Magnetic Resonance Imaging A1 - Kattapuram, Susan V. A1 - Kamath, Ravi S. A2 - Imboden, John B. A2 - Hellmann, David B. A2 - Stone, John H. PY - 2013 T2 - CURRENT Diagnosis & Treatment: Rheumatology, 3e AB - Magnetic resonance imaging (MRI) relies on the intrinsic spin of protons, each of which has a magnetic moment. Protons tend to align their magnetic poles along the direction of a magnetic field. When protons are placed in a magnetic field, they can also absorb and then reemit electromagnetic radiation in the form of radiofrequency signals. Nuclei absorb energy from radiofrequency pulses and may resonate. This resonance induces orientation to the magnetic field; the required frequency of the pulse is determined by the strength of the magnetic field and the chemical properties of the target. SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/03/29 UR - accessmedicine.mhmedical.com/content.aspx?aid=57275964 ER -