Yeah, the creatinine is through the roof as you say. I understand the nephrologists’ thinking, not wanting to burn any PD bridges. However, I’m not aware of that - I’ll defer to their judgment.
As far as the logistics of scanning an ICU patient, they are, to say the least, a nightmare. There are all kinds of devices used in the ICU which are not MRI compatible (infusion pumps, etc). However, for the brief period (less than a hour, hopefully) that she’ll be in the tube, I imagine any infusions can be suspended, or tubing can be added to keep the pumps out of the scanner room while still working. THere are MRI compatible ventilators also. We had an actual MRI compatible anesthesia machine that, of course, has a built-in ventilator that we would use.