If you landed on using an inversion recovery sequence with an inversion time that nulls the ventricular signal, congratulation, you just discovered FLAIR (FLuid Attenuation Inversion Recovery)! This is a widely used technique, particular in suspected MS cases. It provides good T2 weighting with nearly no signal in purely ventricular regions.
Let’s design a FLAIR protocol!
Using Figure 2.5 and Figure 2.2, approximately what inversion time should your sequence have?
A - (TI = 50 ms)
B - (TI = 500 ms)
C - (TI = 1 s)
D - (TI = 3 s)