CT scan radiation has no biological effects on Botulinum toxins (Botox).Radiesse filler is a biostimulant dermal filler that consist of calcium hydroxyapatite which can be seen with CT imaging, however there is no evidence to support ionizing effects of the minuscule fleeting radiation from one time CT scanning. You do not need to be concerned about the immediate or longer term effects of CT radiation to your Botox or Radiesse filler injections.
It's highly unlikely that the small amount of radiation would affect how those 2 products work.Best of luck to you.