If they only sold mri machines it'd make much less sense, but they sell a lot of stuff and their name on a healthcare machine increases trust. When you sell stuff like this brand perception can go a very long way. That aside execs and designers might feel very proud to have produced this machine. But carry on with your scepticism, it's good practice.

I don’t think it’s an MRI machine

They very well may be. And with a company like Siemens the branding can build brand recognition and indicate quality. Maybe you aren't buying an MRI but if you have to buy industrial equipment or specialty electronics you're gonna run into them sometimes