Aaron, the upright MRI's may show up pathology that is not present when our spines are unloaded. Kind of like the flexion extension images, we hope that images in more realistic situations will yield more info than the static, neutral images.
In theory, I see the functional MRI's, standing or sitting MRI's being very useful. There are amazing examples of big disc herniations apparent under load, that are not present in a neurtral position. In practice, I have yet to see a smoking gun under standing MRI that is not present in prone MRI.
Nobody has suggested it for me. I'd try it if someone suggested a need for it.
That's the long answer. The short answer is no... not much experience with standing MRI here (except the dozens of clients with them... but nothing extraordinary shown.)
Mark
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