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Figure 1 Quantitative coronary angiography of the left anterior descending coronary artery in a patient with moderate lesion in Aldrigde projection. Automatic evaluation of the stenotic segment was performed by computer analysis. The proximal and distal reference segments are marked with two lines. The minimal luminal diameter was 2.6 mm at Rest, 2.7 mm after intracoronary phentolamine (Reg), 2.6 mm during the first (Ex 1) and 2.6 mm during the second (Ex 2) exercise level, and amounted to 3.0 mm after sublingual nitroglycerin (NTG).
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