2017_IGRT course book

Consistency check as QA tool

Match 1

Match 2

Deviation

D x (L-R)

D y (A-P)

D z (C-C)

D rx (L-R)

D ry (A-P)

D rz (C-C)

between match 1 and 2

-0.5 mm 2.0 mm -1.6 mm -0.9 dg

-0.8 dg

-0.7 dg

Van Herk et al, 1998