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.
|Number of pages||5|
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 2019|
|Event||10th International Conference on 3D Radiation Dosimetry - Kunshan, China|
Duration: 16 Sep 2018 → 19 Sep 2018