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Related Concept Videos

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...
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 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 Studies I: Bronchoscopy and Thoracoscopy01:30

Endoscopic Studies I: Bronchoscopy and Thoracoscopy

Endoscopy is a non-surgical medical technique used to examine a person's internal organs and vessels. This lesson will focus on two types of endoscopic studies: bronchoscopy and thoracoscopy.
Bronchoscopy
Description
Bronchoscopy is a procedure that involves direct visualization of the larynx, trachea, and bronchi for diagnostic and therapeutic purposes. A flexible fiber optic or rigid bronchoscope is used to carry out the procedure. The fiber-optic bronchoscope is more frequently used due to...
Endoscopic Procedures V: ERCP01:26

Endoscopic Procedures V: ERCP

Endoscopic Retrograde Cholangiopancreatography (ERCP) is a diagnostic procedure that combines endoscopy and fluoroscopy to diagnose and treat conditions related to the bile ducts, pancreatic ducts, and gallbladder. This procedure is beneficial for identifying and addressing blockages, gallstones, strictures, and tumors within the biliary or pancreatic systems. ERCP is both diagnostic and therapeutic, offering the ability to visualize and treat identified problems in one session.
Patient...

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Related Experiment Video

Updated: Jun 3, 2026

Optical Screening of Novel Bacteria-specific Probes on Ex Vivo Human Lung Tissue by Confocal Laser Endomicroscopy
09:24

Optical Screening of Novel Bacteria-specific Probes on Ex Vivo Human Lung Tissue by Confocal Laser Endomicroscopy

Published on: November 29, 2017

Novel focused OCT-LIF endoscope.

R Andrew Wall, Garret T Bonnema, Jennifer K Barton

    Biomedical Optics Express
    |March 18, 2011
    PubMed
    Summary
    This summary is machine-generated.

    Combined optical coherence tomography (OCT) and laser-induced fluorescence (LIF) endoscopy improve adenoma detection. A novel 2mm endoscope achromatically integrates OCT and LIF for enhanced diagnostic imaging.

    Keywords:
    (120.3890) Medical optics instrumentation(170.2150) Endoscopic imaging(170.2680) Gastrointestinal(170.4500) Optical coherence tomography(170.6280) Spectroscopy, fluorescence, and luminescence

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    Multimodal Imaging and Spectroscopy Fiber-bundle Microendoscopy Platform for Non-invasive, In Vivo Tissue Analysis
    10:35

    Multimodal Imaging and Spectroscopy Fiber-bundle Microendoscopy Platform for Non-invasive, In Vivo Tissue Analysis

    Published on: October 17, 2016

    Area of Science:

    • Biomedical Optics
    • Medical Imaging
    • Gastroenterology

    Background:

    • Combined optical coherence tomography (OCT) and laser-induced fluorescence (LIF) endoscopy offer superior diagnostic performance for distinguishing normal tissue from adenomas compared to individual methods.
    • Integrating OCT and LIF into a single endoscopic device presents optical design challenges due to the significant wavelength disparity between the two systems.

    Purpose of the Study:

    • To present a novel, high-resolution endoscopic system capable of integrating OCT and LIF modalities.
    • To overcome the optical design complexities associated with combining disparate wavelength systems within a compact endoscope.

    Main Methods:

    • Development of a 2 mm diameter high-resolution endoscope.
    • Implementation of an achromatic reflective ball lens design utilizing total internal reflection (TIR) and internal mirroring.
    • Achieving diffraction-limited focusing for both OCT (1300 nm) and LIF (325 nm) channels within a 1:1 imaging system.

    Main Results:

    • The developed endoscope successfully integrates OCT and LIF capabilities.
    • The achromatic lens design enables focused beam generation across ultraviolet to near-infrared wavelengths.
    • The system achieves theoretically diffraction-limited spot sizes for both OCT and LIF imaging channels.

    Conclusions:

    • The novel endoscopic design effectively combines OCT and LIF, addressing previous optical integration challenges.
    • This integrated system holds significant potential for improving the sensitivity and specificity of adenoma detection during endoscopic procedures.