Dose Course 2018_Flipping book

Treatment planning – CT scan

TPS-dependent solution • Map CT-number to relative electron density (based on CT calibration phantom) • Map CT-number to a list of specific materials (i.e. elemental composition and mass density)

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Phantom materials •

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E.g. plastics, liquid water

• May not be included in the conversion table • Consider manual material assignment, e.g. by using an effective mass density