Dose 2016
Density vs Hounsfield Number
Lost the dependence of high Z for bone
Medium not dense enough
Too low dose
Most significant for phantoms i.e. IMRT QA
Knöös et al RO 1986
-5%
o
Found during audit
Utrecht 2016
Made with FlippingBook
Density vs Hounsfield Number
Lost the dependence of high Z for bone
Medium not dense enough
Too low dose
Most significant for phantoms i.e. IMRT QA
Knöös et al RO 1986
-5%
o
Found during audit
Utrecht 2016
Made with FlippingBook