TY - GEN
T1 - Dual angle scan protocol with Doppler optical coherence tomography for retinal blood flow measurement
AU - Tan, Ou
AU - Wang, Yimin
AU - Huang, David
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
KW - Doppler optical coherence tomography
KW - Retinal blood flow
KW - blood flow double ring scan pattern
KW - coefficient of variation of the Doppler angle
KW - scan protocol
UR - http://www.scopus.com/inward/record.url?scp=79955751803&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79955751803&partnerID=8YFLogxK
U2 - 10.1117/12.878669
DO - 10.1117/12.878669
M3 - Conference contribution
AN - SCOPUS:79955751803
SN - 9780819485052
T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE
BT - Medical Imaging 2011
T2 - Medical Imaging 2011: Computer-Aided Diagnosis
Y2 - 15 February 2011 through 17 February 2011
ER -