Hi Alessandra
it's really an empirical question. If 1 image has sufficient SNR/CNR,
then adding a second doesn't always help (as it induces some
blurring due to interpolation). But if your single image is noisy, which it
might be at 0.8 iso, then a second will help. You might try it on one or
Are you getting a 0.8mm isotropic T2w or FLAIR? You would probably get better
mileage out of a different type of scan that can help exclude dura and blood
vessels if you aren’t already getting one. Also what coil are you using? I
might prefer a TI=1000ms simply because it spreads the CSF,
