Table 3.
Comparison of IVUS and FD-OCT assessments following rotational atherectomy (n=18)
| IVUS | FD-OCT | Difference (IVUS—FD-OCT) | p Value | |
|---|---|---|---|---|
| Mean reference lumen diameter, mm | 3.64±0.80 | 3.38±0.66 | 0.26±0.34 | 0.330 |
| Mean reference lumen area, mm2 | 10.77±1.14 | 9.49±3.59 | 1.28±1.69 | 0.388 |
| In-stent diameter, mm | ||||
| Minimum | 2.51±0.53 | 2.48±0.48 | 0.02±0.17 | 0.586 |
| Maximum | 4.38±0.82 | 3.81±0.67 | 0.57±0.28 | <0.001 |
| Mean | 3.38±0.62 | 3.25±0.60 | 0.13±0.17 | <0.005 |
| In-stent area, mm2 | ||||
| Minimum | 7.19±2.62 | 6.77±2.18 | 0.42±0.77 | <0.05 |
| Maximum | 12.81±4.61 | 10.48±3.65 | 2.33±2.25 | <0.001 |
| Mean | 9.54±3.48 | 8.78±2.91 | 0.82±1.15 | <0.01 |
| Percentage of stent malapposed, % | 5.5±5.0 | 19.6±15.1 | −14.1±12.4 | <0.001 |
| Max stent malapposition, distance in mm | 0.57±0.32 | 1.10±0.34 | −0.53±0.33 | <0.001 |
| Max stent malapposition, area in mm2 | 0.88±1.09 | 2.65±1.88 | −1.77±1.35 | <0.001 |
FD-OCT, frequency domain optical coherence tomography; IVUS, intravascular ultrasound.