Table 1.

Differences in quantitative metrics among single, averaged, and denoised image in optical coherence tomography angiography images.

Parameter	Original Image	Averaged Image	Denoised Image	P Value *	P Value †	P Value ‡	P Value §
Time per Image (s)	16.6 ± 2.4	285 ± 38	22.1 ± 2.4	<0.0001	<0.0001	< 0.0001	NA
Contrast-to-noise ratio	1.092 ± 0.274	1.202 ± 0.331	1.617 ± 0.447	0.0648	<0.0001	< 0.0001	NA
Peak signal-to-noise ratio (dB)	14.3 ± 1.2	NA	17.0 ± 1.3	NA	NA	NA	<0.0001

* Comparison between original and averaged image by the Tukey–Kramer test. † Comparison between original and denoised image by the Tukey–Kramer test. ‡ Comparison between averaged and denoised image by the Tukey–Kramer test. § Comparison between original and denoised image by paired t test. NA = not applicable.