Congtao Xu

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This work investigates and compares CT image metallic artifact reduction (MAR) methods and tissue assignment schemes (TAS) for the development of virtual patient models for permanent implant brachytherapy Monte Carlo (MC) dose calculations. Four MAR techniques are investigated to mitigate seed artifacts from post-implant CT images of a homogeneous phantom(More)
To investigate the nonlinear interaction of electroencephalograph (EEG signal), bispectral analysis is used for the study of clinical EEG in different brain functions. The parametric bispectral estimation is proposed in the paper for the purpose of extracting the nonlinear information beyond second order statistics or power spectra involved in the EEG. The(More)
PURPOSE To investigate dose distributions in the prostate and surrounding tissues for I-125 brachytherapy using Monte Carlo (MC) calculations with patient-specific phantoms derived from CT images. We explore the effectiveness of different techniques to mitigate streaking artifacts due to brachytherapy sources in post-implant CT images. METHODS Nine(More)
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