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Related Concept Videos

Three-Dimensional Microscopy in Microbiology01:28

Three-Dimensional Microscopy in Microbiology

Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...
Two-Dimensional Microscopy in Microbiology01:29

Two-Dimensional Microscopy in Microbiology

Two-dimensional (2D) microscopy encompasses a range of optical techniques that capture images within a single focal plane, offering detailed representations of microscopic structures. These techniques are essential in biological and medical research, enabling the visualization of cellular and subcellular structures with different levels of contrast and specificity.There are several major types of 2D microscopy, each with strengths and applications.Bright-Field MicroscopyBright-field microscopy...
Immunofluorescence Microscopy01:12

Immunofluorescence Microscopy

A fluorescence microscope uses fluorescent chromophores called fluorochromes, which can absorb energy from a light source and then emit this energy as visible light. Fluorochromes include naturally fluorescent substances (such as chlorophylls) and fluorescent stains that are added to the specimen to create contrast. Dyes such as Texas red and FITC are examples of fluorochromes. Other examples include the nucleic acid dyes 4’,6’-diamidino-2-phenylindole (DAPI), and acridine orange.
The...
Studying the Cytoskeleton01:17

Studying the Cytoskeleton

The cytoskeletal architecture can be studied using different microscopic and biochemical techniques. Electron microscopy was instrumental in discovering the cytoskeletal architecture around the 1960s, which allowed obtaining structural information at a high-resolution level. However, the sample preparation procedure often limits this ability in biological samples. Several protocols have been developed over the years to optimize sample preparation. In one of the protocols known as rotary...
Overview of Microscopy Techniques01:22

Overview of Microscopy Techniques

The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...
Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...

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Related Experiment Video

Updated: Jul 14, 2026

Impression Cytology of the Lid Wiper Area
07:01

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Published on: August 9, 2016

Virtual microscopy for cytology proficiency testing: are we there yet?

Jimmie Stewart1, Kayo Miyazaki, Kristen Bevans-Wilkins

  • 1Department of Pathology and Laboratory Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792, USA. jj.stewart@hosp.wisc.edu

Cancer
|June 21, 2007
PubMed
Summary

Virtual microscopy (VM) shows feasibility for cytology proficiency tests, achieving high accuracy in diagnoses. Challenges with time allocation and 3D lesion interpretation were noted but can be addressed with improved software.

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Last Updated: Jul 14, 2026

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10:18

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09:41

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Published on: September 20, 2013

Area of Science:

  • Cytopathology
  • Medical Imaging
  • Digital Pathology

Background:

  • Traditional cytology proficiency tests face logistical challenges.
  • Virtual microscopy (VM) offers a potential digital solution for delivering these tests.

Purpose of the Study:

  • To evaluate the feasibility of using virtual microscopy (VM) for mandatory cytology proficiency testing.
  • To assess the diagnostic accuracy and identify challenges associated with VM in this context.

Main Methods:

  • Three senior cytotechnologists and two cytopathologists participated in three VM-based proficiency tests.
  • ThinPrep slides were digitized using an Aperio T3 ScanScope.
  • Participants acted as primary (cytotechnologists) and secondary (cytopathologists) screeners, adhering to Centers for Medicare and Medicaid Services (CMS) guidelines.

Main Results:

  • Overall correct classification rates were high, reaching 100% in some tests for both primary and secondary screeners.
  • The second test showed 93.3% correct classification for primary screeners, improving with familiarity.
  • Secondary screeners consistently achieved 100% correct classification.

Conclusions:

  • Virtual microscopy is a feasible method for cytology proficiency testing.
  • Initial challenges included time constraints for primary screeners and difficulties interpreting 3D lesions.
  • Software improvements and better depth-of-focus capture are recommended to enhance VM's utility.