Effect of neointimal tissue morphology on vascular response to balloon angioplasty in lesions with in-stent restenosis after drug-eluting stent deployment: an optical coherence tomography analysis
This study aimed to evaluate the vascular response to balloon angioplasty for drug-eluting stent (DES) in-stent restenosis (ISR) lesions based on our novel optical coherence tomography (OCT) classification to establish the optimal treatment strategy for ISR lesions after DES implantation. A total of 104 ISR lesions after DES implantation were imaged by OCT and categorized into the following six patterns: type I—homogeneous high-intensity tissue, type II—heterogeneous tissue with signal attenuation, type III—speckled heterogeneous tissue, type IV—mixed tissue containing poorly delineated region with invisible strut, type V—mixed tissue containing sharply delineated low-intensity region, and type VI ...
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