Radiology · 1980 · 11 citations · 0 references
MedicineRadiation OncologyRadiologyDiagnostic ImagingDiagnostic RadiologyTreatment PlanningComputed TomographyComputed Tomography PhysicsRadiation Imaging SystemsRadiation TherapyRadiation Treatment PlanningTreatment Planning PhysicsCompensation TechniquesComputed Tomography AcquisitionComputed Tomography DetectorsComputed Tomography Dose MeasurementComputed Tomography InstrumentationComputerized Treatment PlanningDesign ConstraintsTomographic System Design
The authors describe a low-cost CT scanner integrated with a radiotherapy simulator and designed for treatment planning. The standard rotational gantry and x-ray tube of the simulator are used with a multiwire xenon lonization chamber and simple current-proportional readout system to measure patient attenuation, avoiding problems associated with diagnostic CT scanners in treatment planning. Although design constraints limit performance, software compensation techniques have reduced artifacts and given satisfactory images.