Just Beta
the radiation with the need for most protection
What is gamma radiation?
This ratio changes with end point, dose, and even cell type
What is RBE?
It is high in rapidly growing tumors and low in slow growing tumors
What is alpha/beta ratio?
This is the most recent source for dose constraint
What is QUANTEC?
It is a second cancer, different from the original cancer, appears a while after treatment by radiotherapy
What is a secondary cancer?
These are the main cause for indirect damage.
What are Free radicals?
1.1
What is the standard RBE for protons?
This is the most used model to predict cell survival in vitro
What is the linear quadratic model?
It is the organ that fails in whole if a unit of it fails
What is a serial organ?
This is the largest source of data on long term side effects of occidental /incidental radiation exposure
What is the Life Span Study?
Without this, Free radicals may not exist
What is oxygen/oxygenation?
What are Carbon ions?
What is BED?
This is the effect which increase by increasing dose
What is a deterministic effect?
it changes between different tissues
What is susceptibility to secondary cancer?
This is used so normal tissues can be spared.
What is fractionation?
It is higher for photon therapy than proton therapy
This denotes equivalent total doses in 2-Gy fractions
What is EQD2
This goes down when the fraction number is decreased
What is tolerance dose/dose constraint?
Linear no threshold, OER, and Linear plateau
What are secondary cancer models?
This is the power to which the base in the LQ model is raised
What is -n(da+d^2b)
?