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Instrument Functions: Measures of Small-vessel Blood Flow

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Apaeros also has the added capability to obtain data which can be used to measure small-vessel blood flow. Through a combination of imaging, instrument optimization and third-party post-processing software, quantitative measures can be made.

Technique:

  • Stop horizontal scan over a blood vessel
  • Measure blood velocity by tracking erythrocytes moving across a scanning line
  • Length of line related to velocity

 

Video © 2012 Beetham Eye Institute, Joslin Diabetes Center. All Rights Reserved. Courtesy JK Sun, MD, MPH

This has allowed researchers to produce a blood velocity profile for retinal vessels. Results noted in the following publication utilize a similar instrument. This type of analysis can be made using Apaeros.

AOSLO

Noninvasive Measurements and Analysis of Blood Velocity Profiles in Human Retinal Vessels
Zhangyi Zhong  et al IOVS, June 2011, Vol. 52, No. 7

List of all related works

 
   
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