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33

Don’t loose the details

Comparison of a measured

and calculated cross-plot (at 5

cm depth) of an intensity

modulated field incident on a

flat phantom. A diode-array

(MapCheck; Sun Nuclear

Corp.) was used for this

comparison, which shows

that 97.5% of the points meet

3% criteria even though DTA

(distance to agreement) for a

few points is 10 mm.

Can be crucial for organs at

risk.

From J Palta AAPM 2005

Warsaw 2017