Table 3 Quantitative coronary angiography (QCA) and intravascular ultrasonographic (IVUS) analyses of lesion characteristics

Baseline

Total lesion length, mm

31.3 ± 13.6

29.5 ± 13.1

0.566

Calcium length ratio

0.81 ± 0.10

0.76 ± 0.12

0.093

Superficial calcium arc

288.1° ± 36.3°

279.7° ± 41.8°

0.363

Reference vessel diameter, mm

2.8 ± 0.3

2.7 ± 0.4

0.253

Min. lumen diameter, mm

1.3 ± 0.2

1.3 ± 0.2

0.869

Reference vessel CSA, mm²

6.4 ± 1.5

6.0 ± 1.9

0.315

Min. CSA, mm²

1.3 ± 0.4

1.3 ± 0.4

0.896

Lumen stenosis rate, %

79.1 ± 4.8

77.8 ± 4.2

0.217

After stent

Total stent length per lesion, mm

38.5 ± 13.1

35.8 ± 12.2

0.365

Min. stent diameter, mm

2.7 ± 0.4

2.5 ± 0.4

0.097

Min. stent CSA, mm²

5.9 ± 1.7 *

5.0 ± 1.4

0.021

Residual lumen stenosis rate, %

10.5 ± 10.4

14.7 ± 10.8

0.103

Acute CSA gain, mm²

4.5 ± 1.5 *

3.8 ± 1.5

0.035