Magnetic Resonance Imaging Fundamentals and Safety

Audio Overview:

This chapter explains the foundational concepts of Magnetic Resonance Imaging (MRI), beginning with the behavior of atomic nuclei, particularly hydrogen, in magnetic fields. It covers how strong magnetic fields and radiofrequency (RF) pulses are used to manipulate these nuclei and generate a signal, detailing the importance of Larmor frequency and relaxation times (T1 and T2) for creating image contrast. The text also describes the various components of MRI equipment, such as different types of magnets and coils, and discusses common pulse sequences, emphasizing how different sequences impact image quality and potential artifacts. Finally, it addresses critical MRI safety considerations, including the risks associated with strong magnetic fields and RF exposure.

Radiologic Physics by Nickoloff, Edward L – Ahmad, Naveed.