How MRI Works: Part 1 - NMR Basics.
First in a series on how MRI works. This video deals with NMR basis such as spin, precession, T1 and T2, TR and TE, and Boltzmann Magnetization.
Part 2 - The Spin Echo - [ Ссылка ]
Part 3 - Fourier Theory and k-Space: [ Ссылка ]
Part 4 - The Gradient Echo Sequence :[ Ссылка ]
Slides can be purchased here:
[ Ссылка ]
0:00 - Introduction
1:22 - Nuclear Magnetic Resonance
4:10 - Inside the MRI Scanner
7:50 - The Proton, Spin, and Precession
11:34 - Signal Detection and the Larmor Equation
14:10 - Flip Angle
15:30 - Ensemble Magnetic Moment
16:34 - Free Induction Decay and T2
18:43 - T2 Weighting and TE
21:46 - Spin Density Imaging
24:18 - T1 Relaxation
25:45 - T1 Weighting and TR
27:01 - The NMR Experiment and Rotating Frame
28:57 - Excitation: the B1 field
30:14 - Measuring Longitudinal Magnetization
31:34 - The MR Contrast Equation
34:42 - Boltzmann Magnetization and Polarization
40:09 - Hyperpolarization
41:42 - Outro
