1. Uncertain Detection of Nonuniform Scaffold Expansion Patterns Using Optical Coherence Tomography

    Uncertain Detection of Nonuniform Scaffold Expansion Patterns Using Optical Coherence Tomography

    We read with interest the paper by Ohno et al. ( (1) ) and found that their conclusions merit a few comments. Longitudinal nonuniform expansion patterns by the ABSORB bioresorbable scaffold (BVS) (Abbott Vascular, Irvine, California) may be of clinical importance, but the use of optical coherence tomography (OCT) to identify such patterns requires methods that take catheter motion artifacts into account. The variation in length measurements by OCT compared with nominal length has been reported in ABSORB BVS–treated patients with differences of as much as 5.2 mm ( (2) ) and as much as 10 mm in metal stent–treated patients ...

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