ESTRO course Dose Modelling and Verification 2017

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Factor-based dose calculations basic dosimetric quantities
Phantom scatter factor, Sp
 
 
 
 
 
ref ref primary
ref ref total
ref primary
ref total
p
;
;
;
;
z s D
z s D
zs D
z s D
sS
AAPM TG 74 report, Med Phys 36 (11), 2009
if s = collimator setting c at the plane of the isocentre
 
 cS
cS
c
cp
  
 
 
 
   
  





















ref p
p
c
cp
ref p
p
ref p
p
cp p
c
c
S
S
c
c
cK
c K
S cS
 1 under lateral CPE
dose to collision kerma ratio
     s s K s D p p primary   s: field size
 
 
 
 
ref ref primary
ref primary
ref ref total
ref total
;
;
;
;
z s D
zs D
z s D
zs D
