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Observation of Motion
▪
Hysteresis in half of the patients (1-5
mm separation of trajectories)
▪
The extent of hysteresis and the
amplitude of the tumor motion remains
fairly constant during the entire
treatment
▪
However, in many patients, shifts in the
exhale tumor position were observed
intra- and interfractionally
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
-1
-0.8 -0.6 -0.4 -0.2
0
0.2
0.4
0.6
0.8
1
-1.5
-1
-0.5
0
0.5
1
1.5
0
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350
400