Dual angle scan protocol with Doppler optical coherence tomography for retinal blood flow measurement

Ou Tan; Yimin Wang; David Huang

doi:10.1117/12.878669

9 March 2011 Dual angle scan protocol with Doppler optical coherence tomography for retinal blood flow measurement

Ou Tan, Yimin Wang, David Huang

Proceedings Volume 7963, Medical Imaging 2011: Computer-Aided Diagnosis; 79633X (2011) https://doi.org/10.1117/12.878669
Event: SPIE Medical Imaging, 2011, Lake Buena Vista (Orlando), Florida, United States

Abstract

To improve the scan quality of Doppler Optical coherence tomography for blood flow measurement, we investigate how to improve the Doppler signal for all vessels around optic disc. Doppler signal is depending on the Doppler angle, which is defined as angle between OCT beams and normal direction vessel. In this examination, we test the effect of different OCT beam direction on Doppler angles of all veins. We also test maximizing the Doppler angle by combining scans with different OCT beams direction. Three criteria were used to evaluate the overall quality, average Doppler angle, the percentage of vessels with Doppler angle larger than the optimize value, the percentage of vessel with Coefficient variance of Doppler angle less than the optimize value. The result showed that the best protocol is to maximize the Doppler angle from one scan with OCT beam through supranasal portion of pupil and other scan with OCT beam through infranasal portion of pupil.

Citation Download Citation

Ou Tan, Yimin Wang, and David Huang "Dual angle scan protocol with Doppler optical coherence tomography for retinal blood flow measurement", Proc. SPIE 7963, Medical Imaging 2011: Computer-Aided Diagnosis, 79633X (9 March 2011); https://doi.org/10.1117/12.878669

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KEYWORDS

Optical coherence tomography

Doppler tomography

Blood circulation

Doppler effect

Retina

Double patterning technology

Eye

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