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Measures of Small-Vessel Blood
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.
While stopping the horizontal scan over a blood vessel, blood velocity can be measured by tracking erythrocytes moving across a scanning line. The steeper the slope, the slower the erythrocyte. This has allowed researchers to produce a blood velocity profile for retinal vessels.
Slope is inversely proportional to velocity
Improves detection of blood flow through small vessels
Standard Deviation calculation of a series of images enables visualization of blood flow
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Motion Contrast Imaging
Instrument Functions: Qualitative Measures of Small-Vessel Blood Flow