I'm waiting to have mri for my sore, red painful toes when standing. will it show if there's circulation problems?

No. Need MRA.: The MRI doesn't show the problem with circulation. It will only show the EFFECT of a problem with circulation, & only if it is severe. To get a better estimate of blood flow, an MRA (magnetic resonance angiogram) is more useful, but even that is limited since the pictures are not very clear, & don't show the small blood vessels (microvasculature) that usually cause pain in the toes, only big block

Possibly : Depends what the MRI indication s (what your Doc writes in the equestrian). MRI protocol to look at the vessels is called an MR angiogram, and if they do a joint or soft tissue protocol, it would potentially be a waste of time. Also, there is a difference between imaging for the arteries as opposed to veins. So, a lot of imponderables. Best way is to isolate the issue with clinical exam, then imag