Now playing · 07 MRI

Spin-echo signal

S = 0.3377 a.u.

S∝ρ (1−e−TR/T1)e−TE/T2S \propto \rho\,(1-e^{-TR/T_1})e^{-TE/T_2}

S ∝ ρ (1 − e^{−TR/T1}) e^{−TE/T2} for a 90°–180° SE sequence.

Laser