Figure 2.

Measurement of volume of thrombi. Dislodged thrombi were defined as disappeared thrombi angiographically after procedure. Residual thrombus in situ was not taken into calculation. The cross section area and length of thrombus was measured by quantitative coronary analysis (QCA) method (total cardiology solution, TCS 2.02, Medcon, Israel). We assumed a cylindrical thrombus. The volume of thrombus was obtained by multiplying the cross-sectional area with the lesion length segment by segment to prevent measure bias (A-C). When the thrombus was conical (D), we ascertained its volume by multiplying the cross-sectional area of its base with its length and then dividing by 3.