In Radiotherapy, one of the dosimetry processes involves characterising the clinical radiation beam by measurement of the variation of dose with<unk>  (z) in a water phantom, for all energies and field sizes.
Dose is then normalised to dmax (the<unk>  of dose maximum) and a plot of relative dose versus<unk>  in the phantom is produced.
Percentage depth dose curve
Dose Profile
Extraction ratio
Saturation 
Concentration
Cough classification
Diagnostic test
Absorption spectrum