Dosimetric characteristics of Novalis shaped beam surgery unit.
The dosimetric characteristics of a new dedicated radiosurgical treatment unit are systematically measured in terms of its percent depth dose, beam profile, and relative scatter factor. High-resolution diode detector, mini-ion-chamber detector, and conventional Kodak XV films are used to measure dosimetric data for a range of field sizes from 6x6 mm to 100x100 mm. The effects of collimator size, micro-multileaf collimator shape, and detector type on the dosimetric data are investigated. Results indicate that, with careful design, accurate dosimetric data could be acquired using either a dedicated diode detector or a mini-ion-chamber detector, and film detector. Special attention is required when measuring dosimetric data for small field sizes such as 6x6 mm.
Duke Scholars
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Related Subject Headings
- Sensitivity and Specificity
- Semiconductors
- Scattering, Radiation
- Reproducibility of Results
- Radiotherapy, High-Energy
- Radiotherapy, Conformal
- Radiotherapy Planning, Computer-Assisted
- Radiosurgery
- Radiometry
- Radiation Dosage
Citation
Published In
DOI
ISSN
Publication Date
Volume
Issue
Start / End Page
Location
Related Subject Headings
- Sensitivity and Specificity
- Semiconductors
- Scattering, Radiation
- Reproducibility of Results
- Radiotherapy, High-Energy
- Radiotherapy, Conformal
- Radiotherapy Planning, Computer-Assisted
- Radiosurgery
- Radiometry
- Radiation Dosage