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Related Concept Videos

Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
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DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...

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Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography
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Common-Path Optical Coherence Tomography for Biomedical Imaging and Sensing.

Jin U Kang1, Jae-Ho Han, Xuan Liu

  • 1Department of Electrical and Computer Engineering, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218, USA.

Journal of the Optical Society of Korea
|July 27, 2010
PubMed
Summary
This summary is machine-generated.

This study presents a fiber optic common-path optical coherence tomography (CP-OCT) system for micron-scale imaging. The advanced CP-OCT enables precise targeting, 3-D visualization, and spectroscopic analysis for biomedical applications.

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Area of Science:

  • Biomedical Optics
  • Optical Imaging Technologies
  • Micron-Scale Metrology

Background:

  • Accurate imaging and guidance are critical for minimally invasive procedures.
  • Existing optical coherence tomography (OCT) systems face limitations in transparent target identification and real-time tracking.
  • Need for high-resolution, versatile imaging tools in diverse biomedical applications.

Purpose of the Study:

  • To develop a fiber optic common-path optical coherence tomography (CP-OCT) system.
  • To enable reliable identification of micron-scale, optically transparent targets.
  • To achieve precise positioning, spectroscopic imaging, and 3-D visualization of biological targets.

Main Methods:

  • Development of a high-resolution fiber optic CP-OCT system.
  • Integration of the CP-OCT into various mini-probes and surgical tools.
  • Real-time data acquisition exceeding 70K A-scans per second with sub-3-micrometer resolution.

Main Results:

  • Demonstrated capability for 1D real-time depth tracking.
  • Successful implementation of tool motion limiting and motion compensation.
  • Achieved oxygen-saturation level imaging and high-resolution 3-D reconstructions.
  • Reliable identification of optically transparent, micron-scale targets.

Conclusions:

  • The developed fiber optic CP-OCT system offers advanced capabilities for biomedical imaging.
  • The system provides precise guidance and tracking for minimally invasive interventions.
  • High-resolution 3-D imaging and spectroscopic analysis open new avenues for diagnostics and research.