@InProceedings{8081461,
  author = {M. Suga and Y. Sasaki and T. Sasahara and T. Yuasa and C. Otani},
  booktitle = {2017 25th European Signal Processing Conference (EUSIPCO)},
  title = {Phase contrast computed tomography using continuous THz source},
  year = {2017},
  pages = {1510-1513},
  abstract = {We propose a novel computed tomography (CT) imaging method based on phase-contrast using a continuous wave (CW) THz source with a frequency of 0.54 THz. The system acquires phase-shift by phase modulation technique using Mach-Zehnder interferometer at each data point, and collects projections of the phase-shift from multiple directions over 360 degrees to finally reconstruct a spatial distribution of refractive index. We construct a preliminary system for proof of the concept, and perform an imaging experiment using a polystyrene foam phantom. It was shown that the THz-CT produces an artifact-free and quantitative reconstruction at a spatial resolution of a few mm.},
  keywords = {biomedical optical imaging;computerised tomography;image reconstruction;image resolution;Mach-Zehnder interferometers;medical image processing;phantoms;phase modulation;refractive index;terahertz wave imaging;phase contrast computed tomography;continuous THz source;continuous wave;phase-shift;phase modulation technique;Mach-Zehnder interferometer;image reconstruction;refractive index;polystyrene foam phantom;Image reconstruction;Computed tomography;Refractive index;Optimized production technology;Europe;Signal processing;phase contrast;computed tomography;Mach-Zehnder interferometer;refractive index},
  doi = {10.23919/EUSIPCO.2017.8081461},
  issn = {2076-1465},
  month = {Aug},
  url = {https://www.eurasip.org/proceedings/eusipco/eusipco2017/papers/1570340863.pdf},
}

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The system acquires phase-shift by phase modulation technique using Mach-Zehnder interferometer at each data point, and collects projections of the phase-shift from multiple directions over 360 degrees to finally reconstruct a spatial distribution of refractive index. We construct a preliminary system for proof of the concept, and perform an imaging experiment using a polystyrene foam phantom. 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Yuasa and C. Otani},\n booktitle = {2017 25th European Signal Processing Conference (EUSIPCO)},\n title = {Phase contrast computed tomography using continuous THz source},\n year = {2017},\n pages = {1510-1513},\n abstract = {We propose a novel computed tomography (CT) imaging method based on phase-contrast using a continuous wave (CW) THz source with a frequency of 0.54 THz. The system acquires phase-shift by phase modulation technique using Mach-Zehnder interferometer at each data point, and collects projections of the phase-shift from multiple directions over 360 degrees to finally reconstruct a spatial distribution of refractive index. We construct a preliminary system for proof of the concept, and perform an imaging experiment using a polystyrene foam phantom. 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