I am hand-drawing region of interests using MRIcron. 

My ROI is the superior colliculus. We are interested in 

looking at its response to looming stimuli which is 

greatest in the superficial layer of the SC. Given its small 

size, I wish to use MRIcron with our radiology computers to

provide the best magnification and image resolution.

1. Is MRIcron the best software to use for hand-drawing ROI

in small brain structures such as the SC?

2. How do I achieve the best magnification with MRIcron?

3. Are the T1 anatomical images the best sequence to use

to draw ROI? We do not have proton density images.

Many thanks in advance,

Best wishes,

Eavan Mc Govern

Neurology Research Fellow, Dublin