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We read with interest the excellent work by Tang et al,1 which compared the safety and efficacy of drug-coated balloon (DCB) with conventional balloon (CB) in endovascular therapy for patients with symptomatic intracranial atherosclerotic stenosis (ICAS). The results indicated that only DCB angioplasty could effectively decrease the incidence of restenosis compared with only CB angioplasty. However, we noticed that the definition of technical success (residual stenosis ≤50%) …
Contributors JZ and XZ designed and drafted the manuscript. JH revised the manuscript.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Provenance and peer review Not commissioned; internally peer reviewed.
© Author(s) (or their employer(s)) 2023. No commercial re-use. See rights and permissions. Published by BMJ.