1. Articles from Peter Sinnaeve

    1-12 of 12

    1. COmplex coronary Bifurcation lesions: RAndomized comparison of a strategy using a dedicated self-expanding biolimus-eluting stent versus a culotte strategy using everolimus-eluting stents: primary results of the COBRA trial

      Explore eurointervention.org Cardiology
      COmplex coronary Bifurcation lesions: RAndomized comparison of a strategy using a dedicated self-expanding biolimus-eluting stent versus a culotte strategy using everolimus-eluting stents: primary results of the COBRA trial

      Aims: We aimed to compare healing responses with optical coherence tomography, and clinical and angiographic outcome after treatment of coronary bifurcation lesions with a dedicated stent versus aconventional culotte technique. Methods and results: Forty patients with true and complex coronary bifurcation lesions were randomly assigned to treatment with the Axxess™ bifurcation stent in the proximal main vessel (MV) and additional BioMatrix™ stents in the branches (Biosensors Europe SA, Morges, Switzerland), versus a culotte technique using XIENCE™ stents (Abbott Vascular, Santa Clara, CA, USA). The primary endpoint of percentage of uncovered struts at nine months was similar with the dedicated strategy ...

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      Mentions: Walter Desmet K. U. Leuven Giovanni J. Ughi

    2. STACCATO (Assessment of Stent sTrut Apposition and Coverage in Coronary ArTeries with Optical coherence tomography in patients with STEMI, NSTEMI and stable/unstable angina undergoing everolimus vs. biolimus A9-eluting stent implantation): a randomised co

      Explore eurointervention.org Cardiology
      STACCATO (Assessment of Stent sTrut Apposition and Coverage in Coronary ArTeries with Optical coherence tomography in patients with STEMI, NSTEMI and stable/unstable angina undergoing everolimus vs. biolimus A9-eluting stent implantation): a randomised co

      Aims: To compare tissue coverage in coronary lesions stented with durable fluoropolymer-coated everolimus-eluting stents (EES) vs. biodegradable polymer-coated biolimus A9-eluting stents (BES). Methods and results: Sixty-four patients (64 lesions) with de novo coronary artery lesions were randomised to percutaneous treatment with XIENCE® EES (Abbott Vascular, Santa Clara, CA, USA) vs. BioMatrix™ BES (Biosensors, Morges, Switzerland). The primary endpoint was the percentage of uncovered struts, as assessed with OCT, at nine months. The average percentage of uncovered struts was significantly lower with EES (4.3±4.8% vs. 8.7±7.8% with BES, p=0.019). There was no difference ...

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      Mentions: Walter Desmet K. U. Leuven Giovanni J. Ughi

    3. Optical coherence tomography study of healing characteristics of paclitaxel-eluting balloons vs. everolimus-eluting stents for in-stent restenosis: the SEDUCE (Safety and Efficacy of a Drug elUting balloon in Coronary artery rEstenosis) randomised clinica

      Explore eurointervention.org Cardiology
      Optical coherence tomography study of healing characteristics of paclitaxel-eluting balloons vs. everolimus-eluting stents for in-stent restenosis: the SEDUCE (Safety and Efficacy of a Drug elUting balloon in Coronary artery rEstenosis) randomised clinica

      Aims: Little is known about the respective healing responses and clinical efficacy and safety of drug-eluting balloons (DEB) and the second generation of drug-eluting stents (DES) when used to treat in-stent restenosis (ISR). In this study, we set out to compare prospectively the healing characteristics, as assessed by optical coherence tomography (OCT), of DEB versus DES after treatment of ISR in bare metal stents (BMS). Methods and results: Fifty patients with BMS ISR were randomised to treatment with a paclitaxel-eluting balloon vs. an everolimus-eluting stent (EES). The primary endpoint was the percentage of uncovered struts, assessed with OCT at nine ...

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      Mentions: Walter Desmet K. U. Leuven Giovanni J. Ughi

    4. Automated detection and quantification of clusters of malapposed and uncovered intracoronary stent struts assessed with optical coherence tomography

      Explore Home - Springer Cardiology
      Automated detection and quantification of clusters of malapposed and uncovered intracoronary stent struts assessed with optical coherence tomography

      To date, accurate quantification and localization of malapposed and uncovered struts needs manual and time consuming analysis of large datasets. To develop an algorithm for automated detection and quantification of clusters of malapposed and uncovered struts in optical coherence tomography (OCT) pullbacks, including comprehensive information about their three-dimensional spatial distribution. 64 lesions in 64 patients treated with drug-eluting stent underwent assessment with OCT immediately after implantation and at 9-month follow-up (55 patients). An automated algorithm was used to detect and quantify stent strut malapposition at baseline and coverage at follow-up on an individual strut level. We subsequently applied an algorithm ...

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      Mentions: Walter Desmet K. U. Leuven Giovanni J. Ughi

    5. Healing course of acute vessel wall injury after drug-eluting stent implantation assessed by optical coherence tomography

      Explore ehjcimaging.oxfordjournals.org Cardiology
      Healing course of acute vessel wall injury after drug-eluting stent implantation assessed by optical coherence tomography

      BACKGROUND: Vessel wall injury after drug-eluting stent (DES) implantation can be characterized in detail by optical coherence tomography (OCT). Little is known about the healing course of these phenomena. METHODS AND RESULTS: In 62 lesions (62 patients), the incidence of acute vessel trauma was assessed in the stented region and the edge segments immediately after DES implantation. The healing course of these injuries was assessed at 9-month OCT follow-up using a software algorithm allowing for reliable spatial comparison of baseline and follow-up cross-sectional images. Tissue prolapse (TP) and tissue protrusions were detected in 81 and 35% of lesions, respectively. A ...

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      Mentions: Walter Desmet K. U. Leuven Giovanni J. Ughi

    6. Automatic assessment of stent neointimal coverage by intravascular optical coherence tomography

      Explore ehjcimaging.oxfordjournals.org Cardiology
      Automatic assessment of stent neointimal coverage by intravascular optical coherence tomography

      Aims This study aimed to validate automatic intravascular optical coherence tomography (IVOCT) analysis for the evaluation of neointimal coverage in response to stent implantation. Methods and results Fourteen stented segments in common iliac arteries, acquired from a total of seven adult male New Zealand White rabbits, were interrogated in vivo by IVOCT. Durable polymer everolimus-eluting stents (EES; Xience V, Abbott Vascular, Santa Clara, CA, USA) were used exclusively. Comparison with histology was made in a total of 63 pairs of images, where neointimal thickness over corresponding individual stent struts was assessed. A high correlation coefficient ( R = 0.85, P < 0 ...

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      Mentions: Walter Desmet K. U. Leuven Giovanni J. Ughi

    7. Automated tissue characterization of in vivo atherosclerotic plaques by intravascular optical coherence tomography images

      Explore opticsinfobase.org Cardiology
      Automated tissue characterization of in vivo atherosclerotic plaques by intravascular optical coherence tomography images

      Intravascular optical coherence tomography (IVOCT) is rapidly becoming the method of choice for the in vivo investigation of coronary artery disease. While IVOCT visualizes atherosclerotic plaques with a resolution <20µm, image analysis in terms of tissue composition is currently performed by a time-consuming manual procedure based on the qualitative interpretation of image features. We illustrate an algorithm for the automated and systematic characterization of IVOCT atherosclerotic tissue. The proposed method consists in a supervised classification of image pixels according to textural features combined with the estimated value of the optical attenuation coefficient. IVOCT images of 64 plaques, from 49 ...

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      Mentions: Walter Desmet K. U. Leuven Giovanni J. Ughi

    8. Automatic three-dimensional registration of intra-vascular optical coherence tomography images for the clinical evaluation of stent implantation over time

      Explore Linking to Scitation Content Cardiology
      Automatic three-dimensional registration of intra-vascular optical coherence tomography images for the clinical evaluation of stent implantation over time

      In the last decade a large number of new intracoronary devices (i.e. drug-eluting stents, DES) have been developed to reduce the risks related to bare metal stent (BMS) implantation. The use of this new generation of DES has been shown to substantially reduce, compared with BMS, the occurrence of restenosis and recurrent ischemia that would necessitate a second revascularization procedure. Nevertheless, safety issues on the use of DES persist and full understanding of mechanisms of adverse clinical events is still a matter of concern and debate. Intravascular Optical Coherence Tomography (IV-OCT) is an imaging technique able to visualize the ...

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      Mentions: Walter Desmet K. U. Leuven Giovanni J. Ughi

    9. Congratulations to Giovanni Ughi from K. U. Leuven a Winner of a 2012 Student Travel Grant Award

      Explore Optical Coherence Tomography News Cardiology
      Congratulations to Giovanni Ughi from K. U. Leuven a Winner of a 2012 Student Travel Grant Award

      Giovanni Ughi from the Catholic University Leuven is one of four winners of the OCT News 2012 student travel grant awards (see prior announcement Here). Below is a summary of his work. Topic covered by the project is software development for quantitative computer aided automated analysis of intra-vascular OCT images. Automated segmentation of stent struts and lumen, stent apposition, stent coverage and registration of IV-OCT datasets at different instants of times are part of the software research and development. Moreover, tissue characterization to automatically assess atherosclerotic plaques components and morphology are other issues at which the project address. The optical ...

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      Mentions: Walter Desmet K. U. Leuven Giovanni J. Ughi

    10. Optical coherence tomography (OCT) in PCI for in-stent restenosis (ISR): rationale and design of the SEDUCE (Safety and Efficacy of a Drug elUting balloon in Coronary artery rEstenosis) study

      Explore eurointervention.org Cardiology
      Optical coherence tomography (OCT) in PCI for in-stent restenosis (ISR): rationale and design of the SEDUCE (Safety and Efficacy of a Drug elUting balloon in Coronary artery rEstenosis) study
      The optimal treatment of bare metal stent restenosis is still not defined. The most employed contemporary option is the implantation of a drug-eluding stent (DES). However, this procedure implies the addition of a second metal layer in the vessel wall, which is linked to delayed healing.
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      Mentions: Abbot Walter Desmet K. U. Leuven

    11. Automated volumetric stent analysis of in-vivo intracoronary optical coherence tomography three-dimensional datasets

      Explore SPIE Digital Library Cardiology
      Automated volumetric stent analysis of in-vivo intracoronary optical coherence tomography three-dimensional datasets
      Intra-vascular Optical Coherence Tomography (IV-OCT) is an appropriate imaging modality for the evaluation of stent struts apposition and coverage in the coronary arteries. Most often, image analysis is performed by a time-consuming manual contour tracing process. Recently, we proposed an algorithm for fully automated lumen morphology and individual stent struts apposition/coverage quantification. In this manuscript further developments allowing for automatic segmentation of the stent contour are presented. As such, quantification of in-stent area, malapposition cross-sectional area (i.e. the area representing the space from the stent surface to the vessel wall) and coverage cross-sectional area (i.e. the area ...
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      Mentions: Walter Desmet K. U. Leuven Giovanni J. Ughi

    12. Automated stent strut coverage and apposition analysis of in-vivo intra coronary optical coherence tomography images

      Explore SPIE Digital Library Cardiology
      Automated stent strut coverage and apposition analysis of in-vivo intra coronary optical coherence tomography images
      Several studies have proven that intra-vascular OCT is an appropriate imaging modality able to evaluate stent strut apposition and coverage in coronary arteries. Currently image processing is performed manually resulting in a very time consuming and labor intensive procedure. We propose an algorithm for fully automatic individual stent strut apposition and coverage analysis in coronary arteries. The vessel lumen and stent strut are automatically detected and segmented through analysis of the intensity profiles of the A-scan lines. From these data, apposition and coverage can then be estimated automatically. The algorithm was validated using manual measurement (performed by two trained cardiologists ...
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      Mentions: Abbot Walter Desmet K. U. Leuven
    1-12 of 12
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    1. (12 articles) K. U. Leuven
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    Automated stent strut coverage and apposition analysis of in-vivo intra coronary optical coherence tomography images Automated volumetric stent analysis of in-vivo intracoronary optical coherence tomography three-dimensional datasets Optical coherence tomography (OCT) in PCI for in-stent restenosis (ISR): rationale and design of the SEDUCE (Safety and Efficacy of a Drug elUting balloon in Coronary artery rEstenosis) study Congratulations to Giovanni Ughi from K. U. Leuven a Winner of a 2012 Student Travel Grant Award Automatic three-dimensional registration of intra-vascular optical coherence tomography images for the clinical evaluation of stent implantation over time Automated tissue characterization of in vivo atherosclerotic plaques by intravascular optical coherence tomography images Automatic assessment of stent neointimal coverage by intravascular optical coherence tomography Optical coherence tomography study of healing characteristics of paclitaxel-eluting balloons vs. everolimus-eluting stents for in-stent restenosis: the SEDUCE (Safety and Efficacy of a Drug elUting balloon in Coronary artery rEstenosis) randomised clinica STACCATO (Assessment of Stent sTrut Apposition and Coverage in Coronary ArTeries with Optical coherence tomography in patients with STEMI, NSTEMI and stable/unstable angina undergoing everolimus vs. biolimus A9-eluting stent implantation): a randomised co COmplex coronary Bifurcation lesions: RAndomized comparison of a strategy using a dedicated self-expanding biolimus-eluting stent versus a culotte strategy using everolimus-eluting stents: primary results of the COBRA trial Predictors for Rapid Progression of Coronary Calcification: An Optical Coherence Tomography Study Macular neovascularization in AMD, CSC and best vitelliform macular dystrophy: quantitative OCTA detects distinct clinical entities