Preprint Article Version 1 This version is not peer-reviewed

Optical Micro-Angiography (OMAG) Based Range Optimization Method for Liquid Flow Rate

Version 1 : Received: 22 November 2018 / Approved: 26 November 2018 / Online: 26 November 2018 (08:37:55 CET)

How to cite: Chen, P.; Jiang, L.; Wang, H.; Guo, X.; Zhang, Y.; He, Y.; Liang, R. Optical Micro-Angiography (OMAG) Based Range Optimization Method for Liquid Flow Rate. Preprints 2018, 2018110576 (doi: 10.20944/preprints201811.0576.v1). Chen, P.; Jiang, L.; Wang, H.; Guo, X.; Zhang, Y.; He, Y.; Liang, R. Optical Micro-Angiography (OMAG) Based Range Optimization Method for Liquid Flow Rate. Preprints 2018, 2018110576 (doi: 10.20944/preprints201811.0576.v1).

Abstract

Optical micro-angiography (OMAG) is a new method of detecting flow rate and widely used for in vivo imaging. Although OMAG can distinguish between flowing and stationary parts, it cannot obtain accurate flow rate information. This study proposed a range formula for OMAG and the ultrahigh-sensitivity OMAG (UHS-OMAG) method to quantify the measurement range of an entire system. The parameters of the angle between beam scanning and flow directions, the angular velocity of the galvanometer, and the offset of incident light were introduced, and a formula for calculating the range was derived. Experiments were conducted to measure fine and ultra-fine flow rates by using OMAG and UHS-OMAG methods. The minimum measured flow rate was approximately 30 μm/s, and the maximum measured flow rate was approximately 8 mm/s. Experimental results are in good agreement with the preset results.

Subject Areas

OMAG method; flow rate measurement; micro flow rate

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