Where are the Lights?

I have been moving from one apartment to another and just as I was opening the boxes and just getting settled in my new place the power went out. It stayed out for about 15 hours and people were complaining that they would need to throw out the food, especially since the temperature was in the high 90s. It was a relief to have the power back. You don't realize how much you depend on it, especially if you happen to live in a high-rise apartment, until you lose it.

This reminded me of the worries we used to have when the power went off in the nuclear medicine room. I used to worry that the temperature would rise or fall too fast and cause a crack in the crystal of the gamma camera. I would keep reminding the maintenance staff about the importance of keeping temperature steady or at least making sure it did not rise or fall too fast.  

I was talking to some crystal manufacturers a few years ago and they said the crystals used now are not nearly a brittle and that a steady temperature is not as vital. Even so, I wonder if there are still some problems that technologists have to deal with when there is an extended loss of power. Unlike MR systems, nuclear medicine cameras do not quench when left without power for extended times, but are there still some things you need to do to protect  your nuclear medicine equipment if there is an emergency or an extended power shortage? Does it mess with the computers? Now that some machines also have CT components, do they encounter any problems in an extended blackout? Do you have your PET or SPECT on emergency backup? Drop a comment and let me know.