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2D detector’s comparison: spatial-dose resolution
Single gantry test fields for resolution and sensitivity assessment. (left) the
sensitivity test, and (right) the resolution test. In the resolution test the
values in the lower half represent difference in % dose between the regions
and the background (lime green) area.
1%
10%
Dose
difference
3mm
15mm
Lateral resolution
test
Longitudinal
resolution test
Combined dose
and spatial
resolution test
regions
+25%
+40%
-12.5%
-25%
+30%
+20%