User manual

55
display in the Image Panel at this stage reveals the fiducial marks on the dose map are
not aligned with the longitudinal and tranverse axes.
Note: If the case contains multiple dose maps, the correct one must be selected. Click
on “Dependence” (5
th
line along the branch) and choose which Dose Map to use from
the drop-down list.
By default, a large
Region of Interest
(ROI) for
quantitative
evaluation is pre-
selected. Click the
Frame Selector
icon to activate
the tool and adjust
the size, shape and
position of the ROI frame. Note: Keep the ROI within the area of the dose map film and
inside the fiducial marks. The ROI can include all the low dose areas where the
exposure is principally due to scattered radiation. If desired these low doses can always
be excluded from the quantitative analysis by entering a threshold value in the
slot at the bottom of the Film Evaluation Panel or Analysis Window.
Note: If the Image Movement icon on the toolbar looks like this the tool is active
and will prevent the Frame Selector tool from being activated. Click the Client Image
Movement icon to turn the tool off - it should look like this and then the Frame
Selector can be activated.
To align the dose map and treatment plan using fiducial registration, click the fiducial fit
icon, on the toolbar to the left of the Image Panel. By selecting “Fit fiducials