Section 9 Flashcards
ESD stands for
Entrance Surface Dose
CEMA stands for
Converted E per unit Mass
KERMA stands for
Kinetic Energy Released per Unit mass
What do we use KERMA for
particles where secondary ionisation - indirect
such as photons, gamma rays, xrays
What do we use CEMA in
For particles where primary ionisation occurs - direct such as alpha, electrons and protons
Effective dose is about the risk to
the person
What does the tissue weighing factors do?
Description of different organs and tissues of the body having different sensitivities to radiation
Equivalent dose
the relative damage likely to cause
Absorbed dose
how much radiaiton absorbed
Effective dose
how sensitive the tissue/organ is to the effects of absorbed E
What is ESD measured in
Measured in mGy
Radiation Weighting Factor
Biological effectiveness
Tissue Weighting Factor
Variation in tissue sensitivity
