What is the name of this movie?

It is a fairly recent movie . It is an artistic type of movie I suppose. There is this doctor fellow, and I believe his wife has some kind of neurological disease, and he is trying to cure his wife. The movie is set in the winter I THINK because I remember seeing snow. The movie cuts between him in this sort of space world, with some kind of mystical tree perhaps. I don't remember t he ending because I haven't seen it all.