Effect of Crack Patterns in Calcified Plaque on Lumen Area after Stenting for a Severe Calcified Coronary Artery (from the Optical Frequency Domain Imaging-Guided Percutaneous Coronary Artery Intervention for Calcified Lesion Registry)

Figure 2

Lumen area expansion ratio between before ballooning and after stenting. (a) Lumen area expansion ratio between before ballooning and after stenting (all analyzed frames (n = 242)). Type 0, 196% (interquartile range (IQR), 163–244), type 1, 210% (IQR, 174–244), and type 2, 237% (IQR, 203–294). (b) Lumen area expansion ratio between before ballooning and after stenting according to the degrees of calcium arc. 315–360° calcium sections: type 0, 135% (IQR, 110–231); type 1, 197% (IQR, 167–241); and type 2, 242% (IQR, 220–368)). 270–314° calcium sections (type 0, 207% (IQR, 175–247); type 1, 214% (IQR, 177–255); and type 2, 227% (IQR, 200–280)). 225–269° calcium sections (type 0, 200% (IQR, 182–236); type 1, 199% (IQR, 175–220); and type 2, 232% (IQR, 212–334)). 180–224° calcium sections (type 0, 198% (IQR, 157–247); type 1, 228% (IQR, 189–265); and type 2, 231% (IQR, 201–269)).

(a)

(b)