It's not just "in mice", it's "in dead mice" AFAICT, as they must open the mouse to use LSM. Mice tend to not work after you open them. It also is difficult to get high resolution images of samples disturbed by sources of noise such as blood flow. I had an uninformed perspective that for a given field strength the resolution is limited by how long the subject can stay still. This is obviously a lot longer for one that isn't alive and is screwed to the platform.
Of course, lots of important research will benefit from improved scanning resolution on dead subjects -- one might get mislead by the headline, especially if one isn't a research scientist mostly concerned with scanning things you've poisoned or genetically programmed to die in interesting ways.
I assume the 9.4T magnet is a very small bore and couldn't take a human. (E.g. https://www.monash.edu/researchinfrastructure/mbi/facilities...).
Of course, lots of important research will benefit from improved scanning resolution on dead subjects -- one might get mislead by the headline, especially if one isn't a research scientist mostly concerned with scanning things you've poisoned or genetically programmed to die in interesting ways.