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Treatment planning – CT scan
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TPS-dependent solution
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Map CT-number to relative electron density
(based on CT calibration phantom)
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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
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May not be included in the conversion table
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Consider manual material assignment,
e.g. by using an effective mass density