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Endoscopic Procedures III: Video Capsule Endoscopy01:28

Endoscopic Procedures III: Video Capsule Endoscopy

Capsule endoscopy, or wireless or video capsule endoscopy, is a diagnostic procedure for examining the entire gastrointestinal tract. Patients swallow a capsule about the size of a vitamin tablet. The capsule is equipped with a transmitter, a battery, an LED light source, and a color video camera to capture images throughout the gastrointestinal tract. This procedure is particularly useful for diagnosing conditions such as Crohn's disease, ulcerative colitis, tumors, polyps, ulcers, unexplained...

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相关实验视频

Updated: Jun 19, 2026

Video-rate Scanning Confocal Microscopy and Microendoscopy
14:10

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测量视频内镜调制转移功能的最佳实践

Quanzeng Wang1, Chinh Tran1,2, Peter Burns3

  • 1Center for Devices and Radiological Health, Food and Drug Administration, Silver Spring, MD 20993, USA.

Sensors (Basel, Switzerland)
|August 10, 2024
PubMed
概括
此摘要是机器生成的。

这项研究优化了视频内镜的调制转移函数 (MTF) 测量,增强了ISO 8600-5标准. 在内镜成像中提供了准确的MTF曲线生成的建议.

关键词:
根据ISO 12233的规定.根据ISO 8600-5的规定.一个内镜,一个内镜,一个内镜.模块化转移功能的模块化转移功能解决方案的解决方案解决方案的解决方案.有斜边的边缘.空间频率响应的空间频率响应

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科学领域:

  • 医疗成像医学成像
  • 光学工程是指光学工程.
  • 标准的发展 标准的发展

背景情况:

  • 内镜对于手术辅助和疾病诊断至关重要,光学性能,特别是分辨率至关重要.
  • 调制转移函数 (MTF) 是评估内镜分辨率的一个关键指标.
  • 目前的ISO 8600-5:2020对MTF测量的标准不包括光电子视频内镜,并且缺乏经验验证.

研究的目的:

  • 扩大ISO 8600-5:2020标准,包括视频内镜.
  • 通过解决独特的特性和测量参数,优化视频内镜的MTF测试方法.
  • 为内镜成像中准确的MTF曲线生成提供建议.

主要方法:

  • 研究了图像亮度 (强度,均性),图表调制补偿,数字值线性,自动增强控制,图像增强,图像压缩和感兴趣区域维度的影响.
  • 分析了从斜边测试图图图像中得出的MTF测量的这些影响.
  • 制定了控制这些参数的建议,以确保准确的MTF评估.

主要成果:

  • 确定了影响视频内镜MTF测量精度的关键参数.
  • 量化了诸如图像亮度,数字处理和测试图分析等因素的影响.
  • 为优化视频内镜MTF测试程序制定了指导方针.

结论:

  • 优化的MTF测试方法和建议提高了ISO 8600-5标准对视频内镜的适用性.
  • 准确的MTF测量对于可靠的内镜成像和诊断至关重要.
  • 这些发现有可能用于改进其他数字成像设备中的MTF测量.