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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.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...

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Related Experiment Video

Updated: Jun 21, 2026

Live-imaging of the Drosophila Pupal Eye
09:54

Live-imaging of the Drosophila Pupal Eye

Published on: January 12, 2015

How do I get an optimal image?

H R Anil Kumar1

  • 1Department of Anaesthesia, Narayana Hrudayalaya, No. 258/A, Bommasandra Industrial Area, Anekal Taluk, Bangalore-560 099, India. Aniyahr@gmail.com

Annals of Cardiac Anaesthesia
|July 16, 2009
PubMed
Summary
This summary is machine-generated.

Trans-esophageal echocardiography (TEE) is crucial for cardiac surgery decisions. Optimizing TEE image quality, primarily through echocardiographer skill, is key for reliable intra-operative monitoring.

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Area of Science:

  • Cardiovascular Anesthesiology
  • Medical Imaging Physics
  • Echocardiography

Background:

  • Trans-esophageal echocardiography (TEE) is increasingly vital for intra-operative monitoring in cardiac surgery.
  • Its utility relies heavily on the ability to obtain high-quality images for critical decision-making.

Purpose of the Study:

  • To highlight the importance of image optimization in intra-operative TEE.
  • To identify factors influencing TEE image quality and propose solutions.

Main Methods:

  • Discussion of factors affecting TEE image quality: patient anatomy, ultrasound system, and echocardiographer skill.
  • Emphasis on the modifiable factor: echocardiographer's expertise.

Main Results:

  • Patient anatomy and ultrasound system quality are often unchangeable variables.
  • Echocardiographer skill is the primary controllable factor for enhancing TEE image quality.

Conclusions:

  • Improving echocardiographer's understanding of ultrasound physics and machine controls is essential.
  • This knowledge empowers optimization of intra-operative TEE image acquisition for better patient care.