CT is the wrong imaging tech for Moka pots at least - they're much cooler looking if you're doing neutron imaging and can see the water:
https://www.youtube.com/watch?v=VESMU7JfVHU
Very cool, if you don't care about seeing the condensed steam this could be done with X-rays by adding Sodium metatungstate or very toxic thallium formate/malonate to the water. You could also probably replace the water with bormoform or if you don't care about destroying everything, elemental bromine.
>The aluminum is easily activated and directly after the experiment it often has something in the order of 300-400uSv/h. This decays to 4-5uSv/h in about 15-20min, some hours are needed to reach inactive status <0.1uSv/h. The coffee does not become active to a degree that is worth mentioning. However, due to the risk of contamination in the controlled zone it is not allowed to eat or drink things that have been in the beam.