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Basic Dose Calculation Principles
DD(d)
%
=D
max
•
(f+d
m
/f+d)
2
•
T(d),
T(d)=e
-(
m
•
d)
•
K
s
Different approaches for
omitting the distance effect
–
TAR - tissue air ratio
–
TMR – tissue maximume ratio
–
TPR – tissue phantom ratio
depth
TMR