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相关概念视频

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and solid...
Endoscopic Procedures I: Esophagogastroduodenoscopy01:29

Endoscopic Procedures I: Esophagogastroduodenoscopy

An Esophagogastroduodenoscopy (EGD) is a diagnostic procedure in which an endoscopist uses a flexible, lighted endoscope to visualize the upper gastrointestinal (GI) tract. The procedure includes visualizing the oropharynx, esophagus, stomach, and the first part of the small intestine, the duodenum.
During an EGD, the endoscope can be used to:
Endoscopic Procedures II: Colonoscopy01:25

Endoscopic Procedures II: Colonoscopy

The colon, or large intestine, is the final segment of the digestive system. Its primary functions include absorbing water and vitamins produced by gut bacteria and transforming waste from liquid to solid to form stool. In adults, the large intestine is approximately 5 feet long and consists of four main sections:
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...
Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

Sigmoidoscopy and laparoscopy are distinct medical procedures that enable physicians to internally inspect different parts of the GI tract. Although they serve different purposes, each is essential for diagnosing and, in some cases, treating various medical conditions.
Sigmoidoscopy
Sigmoidoscopy is a diagnostic procedure that uses a flexible sigmoidoscope equipped with a light source and camera to examine the rectum and sigmoid colon. The procedure involves inserting the tube through the anus...
Upper GI Series: Barium Swallow01:24

Upper GI Series: Barium Swallow

The Barium Swallow Study, or a Barium Esophagogram, is a diagnostic imaging method used to visualize the upper gastrointestinal (GI) tract, including the esophagus, stomach, and small intestine. It employs barium sulfate, a radiopaque contrast material, to provide clear images of the upper digestive system, helping to identify abnormalities, diseases, or structural issues.
Purpose and Procedure
Patients undergoing this procedure ingest a liquid containing barium sulfate with a chalky...

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相关实验视频

Updated: Jun 23, 2026

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
15:49

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System

Published on: October 17, 2013

DivGI:深入研究消化内镜图像分类.

Qi He1, Sophia Bano2, Danail Stoyanov2

  • 1The Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, Tianjin University, Tianjin, China.

International journal of computer assisted radiology and surgery
|June 6, 2025
PubMed
概括
此摘要是机器生成的。

本研究介绍了DivGI,这是一种用于胃肠内镜图像分类的新框架,有效地解决了类不平衡,模糊的特征和类别相似性,以提高诊断准确性.

关键词:
细粒度的视觉识别器.胃肠道内镜检查是指胃肠道内镜检查.层次化的标签标签.图像的分类图像的分类.不平衡的学习学习.

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Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation
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Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation

Published on: August 26, 2014

The Role of Anatomical Dissection in Defining Colic and Small Bowel Artery Lymphovascular Bundles in the D3 Volume of Small and Large Bowel Mesentery
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The Role of Anatomical Dissection in Defining Colic and Small Bowel Artery Lymphovascular Bundles in the D3 Volume of Small and Large Bowel Mesentery

Published on: August 1, 2025

相关实验视频

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Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
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Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation
09:42

Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation

Published on: August 26, 2014

The Role of Anatomical Dissection in Defining Colic and Small Bowel Artery Lymphovascular Bundles in the D3 Volume of Small and Large Bowel Mesentery
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The Role of Anatomical Dissection in Defining Colic and Small Bowel Artery Lymphovascular Bundles in the D3 Volume of Small and Large Bowel Mesentery

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科学领域:

  • 医疗成像医学成像
  • 计算机视觉 计算机视觉
  • 胃肠病学 胃肠病学

背景情况:

  • 胃肠道内镜成像对于诊断胃肠道疾病至关重要.
  • 现有的方法面临着诸如阶级不平衡,模糊的特征和内镜图像中高度的类别间相似性等挑战.
  • 这些挑战限制了临床环境中自动图像分析的准确性.

研究的目的:

  • 提出一个统一的图像分类框架,DivGI,以全面解决GI内镜成像方面的挑战.
  • 为了提高在内镜图像中分类解剖学标志和疑似病变的准确性和效率.

主要方法:

  • 开发了一个新的网络架构,DivGI,集成平衡采样,细粒度分类和多标签分类.
  • 通过重新抽样和混合技术实现了均衡的抽样.
  • 细粒度分类采用多颗粒度特征学习,多标签分类采用分层标签联合学习.

主要成果:

  • 在三个公共数据集中,DivGI在分类准确度方面取得了显著的改进.
  • 获得了高的马修斯相关系数 (MCC):在HyperKvasir上达到91.31%,在上部GI上达到86.72%,在GastroVision上达到82.88%.
  • 在有效性和效率方面表现优于现有方法.

结论:

  • 在胃肠道内镜中,DivGI网络有效地对例行和病变图像进行分类.
  • 拟议的框架有助于改善临床诊断.
  • 代码和数据是公开可用的,用于进一步的研究和应用.