Flip Angle Diagram for Educational Use

This diagram offers a clear, step-by-step comparison of how magnetization vectors behave when subjected to different radiofrequency (RF) flip angles. On the left, it illustrates the process with a 90-degree flip, showing the initial rotation of the magnetization into the XY plane, its subsequent dephasing and partial recovery over time (t and 2t), and the eventual formation of an echo. The right column presents a 45-degree flip, demonstrating how the magnetization is partially rotated, its return towards the longitudinal axis, and the generation of a unique 'reversed echo.' This visual guide is an excellent educational tool for understanding fundamental concepts like spin echoes, free induction decay, and T1/T2 relaxation processes, commonly encountered in magnetic resonance physics.

magnetic resonance - flip angle - magnetization - spin echo - nmr - mri - relaxation - rf pulse - physics