ARRT MRI ELITE REVIEW FULLY SOLVED EDITION 2026 COMPREHENSIVE GUIDE WITH SCENARIOS AND ANSWERS

ARRT MRI ELITE REVIEW FULLY SOLVED
EDITION 2026 COMPREHENSIVE GUIDE WITH
SCENARIOS AND ANSWERS



◉Differences in chemical shift at.... . Answer: 1T-3.5 T parts per million


◉majority of nuclei align.... . Answer: Parallel


◉Net magnetization vector (NVM) . Answer: Excess number of H
protons aligned with magnetic field


◉Larmar equation: W? . Answer: Precesional frequency


◉Larmar equation: Y? . Answer: Gyromagnetic ratio


◉Larmar equation: B0 . Answer: Magnetic strength


◉Gyromagnetic ratio of H at 1T? . Answer: 42.58 MHz/T (center
frequency)

, ◉Gyromagnetic ratio at 1.5T? . Answer: 63.86 MHz/T ( center
frequency)


◉Out of phase (incoherent) . Answer: Magnetic moments are at different
places along precessional path.


◉In phase (coherent) . Answer: Magnetic moments are at same place


◉Resonance . Answer: Oscillating object is expose to a frequency
having the same frequency of the object. Transmitting RF excitation
pulse.


◉For MR Signal, RD pulse must match ... . Answer: Precessional
frequency of H


◉Excitation . Answer: Application of RF pulse that cause resonance,
process of moving NMV away from Z -axis


◉Relaxation . Answer: Process by which spins lose energy


◉Free induction decay (FID) . Answer: Loss of signal due to relaxation.
Is produced from RF pulse