Now playing · 07 MRI

Magic angle

3cos²θ−1 = -0.01303

3cos⁡2θ−1=0⇒θ=arccos⁡1/3=54.74∘3\cos^2\theta-1=0\quad\Rightarrow\quad\theta=\arccos\sqrt{1/3}=54.74^\circ

Dipolar coupling ∝ 3cos²θ − 1 = 0 at θ = 54.74°. Tendon T2 lengthens and the tendon lights up.

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