Poster + Paper
7 April 2023 Effects of x-ray excitation voltage on X-SWIR intensity and x-ray dose
Author Affiliations +
Conference Poster
Abstract
X-ray excited shortwave infrared (X-SWIR) imaging attracts much attention because of its advantages in optical deep imaging. However, the X-ray used for X-SWIR imaging brings risk of radiation to organism. How to better realize the synergistic optimization of X-ray dose and luminous efficiency with proper X-ray excitations is especially important for further application. To indicate the effects of X-ray excitation voltage on the X-SWIR light efficiency, the paper builds up an evaluating method, considering the variation of both X-SWIR intensity and X-ray dose along with the X-ray excitation voltages. Based on the method, the X-SWIR intensity and X-ray dose with different X-ray voltages are tested. By calculating the X-SWIR luminescence intensity with unit absorption dose at different X-ray voltages, the influence of X-ray energy on luminous efficiency is revealed. Results show that the dose efficiency of the probe is related to the X-ray energy, and it is the highest under 30-40 kV X-ray excitation (average energy of 10-20 keV). The conclusion is that the proposed evaluating method is feasible for assessing the luminescence efficiency and providing a reference for the practical application of X-ray luminescent nanoprobes. It helps understanding the X-ray luminescence theory, optimizing the X-ray excitation, reducing the X-ray dose while maintaining the X-SWIR luminescence intensity, which is meaningful for practical application of X-SWIR imaging in vivo.
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wangyang Li, Wenqing Hao, Ruijing Li, Tianshuai Liu, Junyan Rong, Wenli Zhang, and Hongbing Lu "Effects of x-ray excitation voltage on X-SWIR intensity and x-ray dose", Proc. SPIE 12463, Medical Imaging 2023: Physics of Medical Imaging, 124634U (7 April 2023); https://doi.org/10.1117/12.2653803
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KEYWORDS
X-rays

Luminescence

X-ray imaging

Luminous efficiency

Nanoprobes

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