2336-2337 / 3107
Corrections for inhomogeneities
•
Tissue inhomogeneities affect the dose deposition and
isodose distributions.
•
The effects of inhomogeneities on radiation dose
distributions depend on the amount, density and
atomic number of the inhomogeneity and the
quality/energy of the photon beam.
• Standard isodose charts
and depth dose tables
assume uniform density
water
.