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. 2023 Aug 1;15:412–423. doi: 10.1016/j.xjon.2023.07.020

Figure 1.

Figure 1

Coronary artery measurements. Eccentricity index is the minor proximal dimension ÷ major proximal dimension (A). Intramural length is the measured length of the oval segment of vessel within the wall of the aorta (B). Takeoff angle is the measured angle between the proximal coronary artery and aortic wall (C).