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相关概念视频

Ultrasonography01:17

Ultrasonography

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Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...
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相关实验视频

Updated: May 26, 2025

Simultaneous Evaluation of Cerebral Hemodynamics and Light Scattering Properties of the In Vivo Rat Brain Using Multispectral Diffuse Reflectance Imaging
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使用多光谱成像优化伤的检测和表征.

Leah S Wilk1, Richelle J M Hoveling1, Maud F A M van Velthoven2

  • 1Department of Biomedical Engineering and Physics, Amsterdam UMC Location AMC, University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, the Netherlands; Co van Ledden Hulsebosch Center, University of Amsterdam, Science Park 904, 1098XH, Amsterdam, the Netherlands.

Journal of forensic and legal medicine
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PubMed
概括

使用替代光源 (ALS) 检测伤受到光散射的限制. 这项研究使用多光谱摄像头找到最佳的波长,随着时间的推移改进伤可视化和特征.

关键词:
伤年龄估计 估计伤检测 伤检测 伤检测法医医学法医学的医学.频谱成像技术的使用.

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科学领域:

  • 医疗成像医学成像
  • 法医科学 法医科学 法医科学
  • 生物光子学 生物光子学

背景情况:

  • 在怀疑身体虐待的情况下,皮下血瘤检测至关重要.
  • 目前使用替代光源 (ALS) 的方法受到光散射和治疗相关变化的限制.
  • 有限的透深度和改变的色素分发掩盖了深度或愈合的伤.

研究的目的:

  • 为了克服当前伤检测方法的局限性.
  • 为了确定最佳的波长,以随着时间的推移检测和表征伤.
  • 提高可疑身体虐待案件的可视化和评估.

主要方法:

  • 使用多光谱摄像头同时捕捉8个波长.
  • 采用基于观察者的评分和对比度量化算法.
  • 分析了伤对比度和最佳检测波长,随着愈合的进展.

主要成果:

  • 在480nm,620nm和850nm时,伤对比度显著增加.
  • 在伤愈合期间,最佳检测波长从850nm转移到578nm-480nm.
  • 证明了波长依赖的对比度增强用于伤可视化.

结论:

  • 多光谱成像可以更好地检测和表征皮下血瘤.
  • 伤检测的最佳波长在愈合过程中动态变化.
  • 这种技术可以提高在怀疑身体虐待案件的法医评估.