Impact of analysis interval size on the quality of optical frequency domain imaging assessments of stent implantation for lesions of the superficial femoral artery

Miki, Kojiro; Fujii, Kenichi; Kawasaki, Daizo; Shibuya, Masabumi; Fukunaga, Masao; Imanaka, Tadayuki; Sumiyoshi, Akinori; Nishimura, Masaharu; Horimatsu, Takahiro; Saita, Ten; Kobayashi, Yuhei; Honda, Yasuhiro; Fitzgerald, Peter J.; Masuyama, Tohru; Ishihara, Masaharu

doi:10.1002/ccd.26673

Cited by 5 publications

(4 citation statements)

References 31 publications

(32 reference statements)

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“…Cross-sectional OCT images were analyzed at 5.0-mm intervals for quantitative and qualitative evaluations. 6 Quantitative and qualitative assessments were performed with the OCT off-line analysis software (LightLab Imaging Inc, Westford, MA, USA). The stent and lumen areas were manually traced, and the neointimal thickness (NIT) was semiautomatically measured.…”

Section: Study Populationmentioning

confidence: 99%

Temporal Course of Vascular Response After Fluoropolymer Paclitaxel-Eluting Stent Implantation for Femoropopliteal Artery Lesions

Tomoi

Kuramitsu

Shinozaki

et al. 2021

Circ J

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Background: Limited data are available regarding the vascular response after fluoropolymer paclitaxel-eluting stent (FP-PES) implantation. This study sought to assess the vascular response at 6 and 12 months after FP-PES implantation for femoropopliteal artery lesions using serial optical coherence tomography (OCT) examination. Methods and Results: From the IMPERIAL trial, this study evaluated 10 de novo femoropopliteal lesions treated with FP-PES. The primary study endpoint was neointimal tissue coverage at a 6-and 12-month follow up, as assessed by serial OCT examination. The incidence of peri-strut low-intensity area (PLIA) and extra-stent lumen (ESL) was also assessed. A total of 203 matched crosssectional images were evaluated at 6 and 12 months (5,615 and 5,763 struts, respectively). From 6 to 12 months, the mean neointimal thickness tended to increase from 198 µm to 233 µm, with a significant reduction in the incidence of malapposed struts (0.59% vs. 0.28%, P=0.039). Conversely, uncovered struts and PLIA were more frequently observed at 12 months (4.4% vs. 7.8%, P=0.01; 12.7% vs. 21.0%, P<0.001, respectively). The ESL area significantly increased over time without any difference in its incidence (0.24±0.32 mm 2 vs. 0.38±0.36 mm 2 , P=0.009). Conclusions: Neointimal proliferation was markedly inhibited from 6 to 12 months after FP-PES implantation, whereas the incidence of uncovered struts and PLIA significantly increased over time with the enlargement of ESL.

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Section: Study Populationmentioning

confidence: 99%

Temporal Course of Vascular Response After Fluoropolymer Paclitaxel-Eluting Stent Implantation for Femoropopliteal Artery Lesions

Tomoi

Kuramitsu

Shinozaki

et al. 2021

Circ J

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“…Cross-sectional OCT imaging frames were reviewed at axial 5-mm intervals (every 20 frames) throughout the entire target segment. 13 Lumen and stent borders were manually traced, and lumen and stent volumes were obtained using volumetric analysis. Neointimal area was calculated as stent area minus lumen area.…”

Section: Evt Proceduresmentioning

confidence: 99%

Influence of Self-Expanding Paclitaxel-Eluting Stent Sizing on Neointimal Hyperplasia in Superficial Femoral Artery Lesions

Miki

Tanaka

Yanaka

et al. 2020

Circ J

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Background: Although self-expanding drug-eluting stents (DES) have recently shown superior outcomes for superficial femoral artery (SFA) lesions, optimal sizing of DES diameter in SFA intervention is unclear. Methods and Results: A total of 40 de novo SFA lesions were randomized 1:1 to receive self-expanding DES with either a 1-mm or 2-mm larger diameter than the reference vessel diameter. Follow-up optical coherence tomography (OCT) was scheduled 6 months after DES implantation to evaluate the vascular response to the stents. Volume index (VI) was defined as volume divided by stent length. The primary endpoint was neointimal VI at 6 months. Baseline reference vessel diameter was similar between the 1-mm larger diameter group and the 2-mm larger diameter group (5.0±0.8 mm vs. 4.7±0.9 mm, P=0.35). Stent diameter was 6.3±0.6 mm in the 1-mm larger group and 7.1±0.6 mm in the 2-mm larger group (P<0.0001), and stent to reference vessel diameter ratio (SV ratio) was 1.3±0.2 and 1.5±0.2 (P<0.0001), respectively. At 6-month, neointimal VI was greater in the 2-mm larger diameter group (5.5±1.5 mm 2 vs. 9.6±3.4 mm 2 , P<0.001). The correlation analysis revealed that degree of neointimal VI was positively correlated with SV ratio (r=0.43, P<0.01). Conclusions: Implantation of self-expanding DES with a considerably high SV ratio resulted in neointimal hyperplasia in SFA lesions.

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“…The peri-stented segment was defined as 10 mm proximal or distal to the stented segment. Cross-sectional OFDI imaging frames were reviewed at axial 5 mm intervals (every 20 frame) throughout the entire target segment [13]. All imaging frames were initially screened for quality assessment and excluded from analysis if any portion of the stent was out of the screen or if the image had poor quality caused by residual blood, artifact, or reverberation [14].…”

Section: Ofdi Analysismentioning

confidence: 99%

Impact of stent diameter on vascular response after self-expanding paclitaxel-eluting stent implantation in the superficial femoral artery

Miki

Fujii

Shibuya

et al. 2017

Journal of Cardiology

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Impact of analysis interval size on the quality of optical frequency domain imaging assessments of stent implantation for lesions of the superficial femoral artery

Abstract: Using large intervals in OFDI analyses of SFA lesions resulted in few differences in measurement variability of volumetric parameters. However, planar analysis for MLA assessment can be susceptible to high variability when large intervals are applied. © 2016 Wiley Periodicals, Inc.

Cited by 5 publications

References 31 publications

Temporal Course of Vascular Response After Fluoropolymer Paclitaxel-Eluting Stent Implantation for Femoropopliteal Artery Lesions

Temporal Course of Vascular Response After Fluoropolymer Paclitaxel-Eluting Stent Implantation for Femoropopliteal Artery Lesions

Influence of Self-Expanding Paclitaxel-Eluting Stent Sizing on Neointimal Hyperplasia in Superficial Femoral Artery Lesions

Impact of stent diameter on vascular response after self-expanding paclitaxel-eluting stent implantation in the superficial femoral artery

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