Physics in Medicine and Biology · 1979 · 100 citations · 8 references
MedicineRadiation OncologyRadiologyDiagnostic ImagingRadiation DosimetryTreatment PlanningComputed TomographyComputed Tomography PhysicsRadiation Dose MeasurementRadiation TherapyRadiation Treatment PlanningTreatment Planning Dose CalculationComputed Tomography Dose MeasurementComputerized Treatment PlanningCt Number To Electron Density CalibrationCt Number To Electron Density ConversionRadiation Dose EstimationSpatial InhomogeneityTissue Inhomogeneity CorrectionTissue Inhomogeneity Modeling
Techniques by which the quantitative anatomical data inherent in a CT scan can be directly used in treatment planning are described. The correction algorithms used in the RAD-8 system, based on an effective path length, have been extended to a pixel-by-pixel approach. By calibrating the X-ray transmission CT scanner in terms of electron densities (electron cm-3) inhomogeneity corrections may be made automatically.
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