Table 2.

Comparisons of phantom mean lumen diameter (LD) by OFDI and FD-OCT in various conditions

	OFDI				FD-OCT
	Saline	Saline 50 %, contrast 50 %	Contrast	% change	Saline	Saline 50 %, contrast 50 %	Contrast	% change
5.04 mm	5.08 ± 0.01	5.08 ± 0.01	5.05 ± 0.01	0.59	5.04 ± 0.01	5.03 ± 0.01	5.03 ± 0.01	0.20
4.04 mm	4.07 ± 0.01	4.07 ± 0.01	4.05 ± 0.01	0.49	4.05 ± 0.01	4.06 ± 0.02	4.04 ± 0.01	0.49
3.04 mm	3.06 ± 0.01	3.06 ± 0.01	3.07 ± 0.01	0.33	3.07 ± 0.01	3.08 ± 0.01	3.06 ± 0.01	0.65
2.03 mm	2.06 ± 0.01	2.05 ± 0.01	2.07 ± 0.01	0.97	2.04 ± 0.01	2.08 ± 0.01	2.04 ± 0.01	1.96
1.51 mm	1.51 ± 0.01	1.52 ± 0.01	1.53 ± 0.00	1.32	1.49 ± 0.01	1.53 ± 0.01	1.48 ± 0.01	3.36

% change was calculated as follows: 100*(maximum mean LD − minimum mean LD among three flushing media)/mean LD in saline

FD-OCT frequency domain optical coherence tomography, LD lumen diameter, OFDI optical frequency domain imaging