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  • Ge, Meilan  (4)
  • Wu, Limin  (4)
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  • 1
    Online Resource
    Online Resource
    Wiley ; 2022
    In:  Journal of Biophotonics Vol. 15, No. 1 ( 2022-01)
    In: Journal of Biophotonics, Wiley, Vol. 15, No. 1 ( 2022-01)
    Abstract: Continuous‐wave terahertz reflection imaging is a potential tool for biological tissues. Based on our home‐made continuous‐wave terahertz reflection imaging system, the effect of both polarization mode and reflection window on the imaging performance is studied theoretically and experimentally, showing good agreement. By taking obtaining sample information and image contrast into consideration, p ‐polarized terahertz waves are recommended. Moreover, considering the sample boundary identification and the image contrast, selection criteria for reflection window are proposed. This work will help to improve the performance of continuous‐wave terahertz reflection imaging and accelerate the THz imaging in biological application.
    Type of Medium: Online Resource
    ISSN: 1864-063X , 1864-0648
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2403788-6
    Location Call Number Limitation Availability
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  • 2
    Online Resource
    Online Resource
    Wiley ; 2022
    In:  Journal of Biophotonics Vol. 15, No. 1 ( 2022-01)
    In: Journal of Biophotonics, Wiley, Vol. 15, No. 1 ( 2022-01)
    Abstract: Continuous‐wave terahertz reflection imaging is a potential tool for biological tissues. Based on our home‐made continuouswave terahertz reflection imaging system, the effect of both polarization mode and reflection window on the imaging performance is studied theoretically and experimentally, showing good agreement. By taking obtaining sample information and image contrast into consideration, p‐polarized terahertz waves are recommended. Moreover, considering the sample boundary identification and the image contrast, selection criteria for reflection window are proposed. This work will help to improve the performance of continuous‐wave terahertz reflection imaging and accelerate the THz imaging in biological application. Further details can be found in the article by Limin Wu, Yuye Wang, Haibin Li, Zelong Wang, Meilan Ge, Degang Xu, and Jianquan Yao ( e202100245 ). image
    Type of Medium: Online Resource
    ISSN: 1864-063X , 1864-0648
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2403788-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    In: Biomedical Optics Express, Optica Publishing Group, Vol. 13, No. 1 ( 2022-01-01), p. 93-
    Abstract: Terahertz (THz) spectroscopy and imaging were used to differentiate brain gliomas in a mouse model at different temperatures. The THz spectral difference between brain glioma and normal brain tissues at -10°C and 20°C was obtained in the 0.4–2.53 THz range. The absorption coefficient and refractive index values varied with both temperature and frequency. The fresh ex vivo brain glioma tissues were mapped by THz attenuated total reflection (ATR) imaging at 2.52 THz in the temperature range from -20°C to 35°C. Compared with a histological examination, THz-ATR imaging could better display the tumor areas at a higher temperature. And the averaged reflectivity of normal tissue was increased with the increase of temperature, whereas the tumor region showed a decreasing trend. Thus, the larger THz imaging difference between glioma and normal tissues could be obtained. Moreover, in vivo brain gliomas in mouse models could also be differentiated clearly from normal brain tissues using THz-ATR imaging at 2.52 THz under room temperature. The THz-ATR images corresponded well with those of visual and hematoxylin and eosin (H & E) stained images. Therefore, this pilot study demonstrated that temperature dependence THz spectroscopy and imaging are helpful to the brain gliomas in mouse model detection.
    Type of Medium: Online Resource
    ISSN: 2156-7085 , 2156-7085
    Language: English
    Publisher: Optica Publishing Group
    Publication Date: 2022
    detail.hit.zdb_id: 2572216-5
    Location Call Number Limitation Availability
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  • 4
    In: Biomedical Optics Express, Optica Publishing Group, Vol. 11, No. 8 ( 2020-08-01), p. 4085-
    Abstract: The early diagnosis of blast-induced traumatic brain injury (bTBI) is of great clinical significance for prognostication and treatment. Here, we report a new strategy for early bTBI diagnosis through serum and cerebrospinal fluid (CSF) based on terahertz time-domain spectroscopy (THz-TDS). The spectral differences of serum and CSF for different degrees of experimental bTBI in rats have been demonstrated in the early period. In addition, the THz spectra of total protein in the hypothalamus and hippocampus were investigated at different time points after blast exposure, which both showed clear differences with time increasing compared with that in the normal brain. This might help to explain the neurological symptoms caused by bTBI. Moreover, based on the THz absorption spectra of serum and CSF, the principal component analysis and machine learning algorithms were performed to automatically identify the degree of bTBI. The highest diagnostic accuracy was up to 95.5%. It is suggested that this method has potential as an alternative method for high-sensitive, rapid, label-free, economical and early diagnosis of bTBI.
    Type of Medium: Online Resource
    ISSN: 2156-7085 , 2156-7085
    Language: English
    Publisher: Optica Publishing Group
    Publication Date: 2020
    detail.hit.zdb_id: 2572216-5
    Location Call Number Limitation Availability
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