Novel dual-wavelength optical-CT imaging method for gel dosimeter readout

Yi Du, Xiangang Wang, Xincheng Xiang, Yves De Deene

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Dual-wavelength scanning is a technique eliminating the need of phantom repositioning for optical-CT gel readout. To further diminish artifacts caused by phantom impurities, we hereby propose a novel dual-wavelength imaging method based on phantom impurity recognition and correction. In this method, impurities in motion trajectories during phantom rotation are recognized at the reference wavelength via motion-tracking as a binary mask, which is then applied to correct impurity-contaminated pixels at the data wavelength. Compared with the existent dual-wavelength imaging method, the proposed method is demonstrated to be capable of reducing impurity-induced artifacts and improving imaging SNR and CNR in the same process.

Original languageEnglish
Article number012043
Pages (from-to)1-5
Number of pages5
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2019
Event10th International Conference on 3D Radiation Dosimetry - Kunshan, China
Duration: 16 Sep 201819 Sep 2018

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