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Distribution of target lesion calcification on IVUS
| None (n, %) | 1 (4) |
| Little (n, %) | 23 (92) |
| Moderate (n, %) | 1 (4) |
| Severe (n, %) | 0 (0) |
| None, no calcification; mild, <1/3 circumference; moderate, 1/3-2/3 circumference; severe, >2/3 circumference | |
