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Updated: Feb 9, 2026

Fluorescence Imaging with One-nanometer Accuracy FIONA
Published on: September 26, 2014
[Accuracy of Dose Calculation with CBCT Images under Different Scanning Conditions]
Hanshun Gong1, Shouping Xu1, Wei Xu1
1Department of Radiotherapy, PLA General Hospital, Beijing, 100853.
Abstract:
The treatment plans were designed based on planning CT of Catphan phantom's homogenic and heterogenetical module, respectively. With the OBI system, Catphan phantom was scanned under different scanning conditions. The dose was recalculated by applying treatment plans based on planning CT to the CBCT images with its individual hounsfield unit-electron density calibration curve. The dose distributions were compared with those of the original plan, the results of HI showed a good agreement. CIs in the homogenic module were superior to those in the heterogenetical one. There is a good dose distribution for CBCT images under different scanning conditions. It is helpful for CBCT images directly used for dose re-calculation in adaptive radiation therapy (ART).
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