Figure 3. Reactivity of Lumen Area and Maximum Medial Thickness to NTG.
(A) Reactivity of lumen area to nitroglycerine (NTG). The spasm lesion group tends to be more sensitive to NTG. (B) Reactivity of maximum medial thickness to NTG. The reactivity of maximum medial thickness to NTG in the spasm lesion is significantly reduced, compared with the nonspasm lesion.