Example of Quantitative Measurement

　

Direct measurement	Derived measurement
Reference Lumen area = 15.99 mm2 Reference EEM area = 29.01 mm2 Lesion Lumen area = 4.83 mm2 Lesion EEM area = 20.58 mm2 Maximum Atheroma Thickness = 1.72 mm Minimum Atheroma Thickness = 0.55 mm Lesion Maximum Lumen Diameter = 2.56 mm Lesion Minimum Lumen Diameter = 2.19 mm Arc of Calcium = 42 degrees	Lesion Atheroma Area = 15.75 mm2 Atheroma Burden = 76.53% Lumen Area Stenosis = 69.79% Remodeling Index = 0.71 Lesion Lumen Eccentricity Index = 0.86 Atheroma Eccentricity Index = 0.68

( Reference: American College of Cardiology Clinical Expert Consensus Document)