Safety and efficacy of frequency-domain optical coherence tomography in evaluating and treating intermediate coronary lesions

Table 4 Two-dimensional quantitative coronary angiography vs frequency-domain optical coherence tomography findings

Group	2D-QCA	FD-OCT	P-value
Reference area, mm2
OCT-guided PCI	8.16 ± 3.24	9.39 ± 3.28	< 0.001
OCT-guided OMT	7.97 (6.01-11.16)	9.32 (7.73-12.14)	0.005
Minimum luminal area mm2
OCT-guided PCI	2.14 ± 1.00	2.58 ± 1.04	< 0.001
OCT-guided OMT	2.40 (1.73-3.82)	3.43 (2.61- 4.72)	< 0.001
Area stenosis %
OCT-guided PCI	74.02 ± 6.44	72.22 ± 7.39	0.027
OCT-guided OMT	67.77 ± 7.31	61.87 ± 7.51	< 0.001

Data are expressed as mean ± SD and n (%), or median and 25^th and 75^th. Percentiles for non-normal distribution. 2D-QCA: Two-dimensional quantitative coronary angiography; FD-OCT: Frequency-domain optical coherence tomography; PCI: Percutaneous coronary intervention; OMT: Optimal medical therapy.