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相关概念视频

IR Spectrometers01:25

IR Spectrometers

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There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
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Computed Tomography-guided Time-domain Diffuse Fluorescence Tomography in Small Animals for Localization of Cancer Biomarkers
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基于IR780的扩散光断层扫描用于癌症检测.

Zhuanxia He1, Limin Zhang1, Lingxiu Xing1

  • 1College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, China.

Journal of biophotonics
|February 8, 2024
PubMed
概括

这项研究使用扩散光断层扫描 (DFT) 来追踪 IR780 化物,近红外剂,在瘤中. DFT成像揭示了长期的IR780保留在瘤和快速的肝脏代谢,帮助癌症成像的发展.

关键词:
IR78080 IR78080 IR78080 IR78080 IR78080 IR78080 IR780扩散光断层扫描 (DFT) 是一种扩散光断层扫描.药物动力学参数 药物动力学参数瘤检测 瘤检测 瘤检测

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科学领域:

  • 生物医学成像技术 生物医学成像技术
  • 纳米技术纳米技术
  • 药理动力学 药理动力学

背景情况:

  • 化IR780是一种用于癌症成像和治疗的近红外 (NIR) 对比剂.
  • 它在生物组织,特别是瘤中的积累,动态和保留需要进一步研究.
  • 扩散光断层扫描 (DFT) 提供了一种在3D中定位和定量NIR光体的方法.

研究的目的:

  • 通过自制DFT系统全面评估IR780的生物化学和药物动力学特征.
  • 评估IR780在体内癌症成像和药理动力学分析中的有效性.
  • 确定最佳条件并了解IR780.0的生物分布.

主要方法:

  • 开发和利用一个自制的扩散光断层扫描 (DFT) 成像系统.
  • 给具有皮下瘤的小鼠注射IR780化物.
  • 在体内和体外成像以评估瘤局部,生物分布和药理动力学.
  • 在小鼠中进行急性毒性试验和细胞测定,以评估生物相容性和细胞吸收.

主要成果:

  • 确定了20微克/毫升的最佳IR780度.
  • IR780显示出良好的生物相容性和显著的细胞吸收.
  • DFT成像成功识别了皮下瘤,并显示了长期保留瘤中的IR780.
  • 在肝脏中观察到IR780的快速代谢,主要积聚在瘤和肺部.
  • 通过DFT实现了敏感的瘤检测和药物动力学速率分析.

结论:

  • DFT成像为癌症模型中IR780的药理动力学和生物分布提供了宝贵的见解.
  • 由于其在瘤和可检测水平中的保留,IR780对瘤成像表现出有希望的特征.
  • 这些发现支持进一步应用和开发IR780作为癌症诊断和治疗中的对比剂.