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Fig. 4 | BMC Medical Imaging

Fig. 4

From: Evaluation of post-dilatation on longitudinal stent deformation and postprocedural stent malapposition in the left main artery by optical coherence tomography (OCT): an in vitro study

Fig. 4

Stent apposition rates of different types of 4.0-mm-diameter stents following post-dilatation by a 5.0-mm high-pressure balloon. The lumen area at the proximal end of the stent (lumen area 1, LA1), the stent area (stent area 1, SA1), and the stent/lumen area rate [SLAR1 = (LA1-SA1)/LA1 × 100%] before post-dilatation were measured and calculated. Subsequently, the lumen area at the proximal end of the stent (lumen area 2, LA2), the stent area (stent area 2, SA2), and the stent/lumen area rate [SLAR2 = (LA2-SA2)/LA2 × 100%] post-dilatation were obtained. Following post-dilatation, the apposition rates of the XIENCE Xpedition, Helios, Firehawk, BuMA, and Excrossal stents were significantly improved, and their average apposition rates were 97.42%, 96.31%, 92.98%, 95.45, and 95.75%, respectively. However, the Nano Plus stent apposition rate was only 78.80% after high-pressure dilatation (P < 0.05, n = 3)

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BMC Medical Imaging

ISSN: 1471-2342

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