has yearly, very extensive (head, neck, spine) MRIs, I can tell you that I would LOVE to have MRI times shortened! A few years ago it took about 45-50 minutes in the tube (with contrast). But times have gone down with better software and it is now 30-35 minutes.
That is still longer than is comfortable, and my back took nearly a week to recover last time. So if the time were reduced to even shorter, that would be great!