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Tips to succeed:

Process consistency is key to obtaining accurate and precise results in film

dosimetry.

The range of dose levels used for calibration must cover the measurement range.

5 films per point dose recommended for calibration

If small square pieces are used for calibration keep track of the initial sheet

orientation (remember coating direction).

Use the same scanning protocol for calibration and for measuring

Need to be scanned in the same orientation [orientation of “needle like micro-

crystals (EBT)]

For best results, scan one day following irradiation (min. two hours)

Take into account corrections for the scanner: Linearity and non homogeneity.