How good is MIT at teaching graph algorithms?

I think the most valuable thing you get from studying “computer science” either formally or informally is the shape of the literature and how you use it. There’s a rare interview quwarion that can’t be answered with “look it up in the hashtable” or “look it up in the literature.”

Your question doesn't really make sense.

You need to be more specific: are you talking about undergrad classes in person, online, or something like grad school? Why do you think that knowing graph algorithms is going to help you load voxel medical models (not graph structures, unless you're talking about image pyramids). GIS data viewers need a lot more klnowledge than just graph algorithms as well.