1. Articles from Janusz Kochman

    1-16 of 16
    1. Comparative Appraisal of Intravascular Ultrasound and Optical Coherence Tomography in Invasive Coronary Imaging: 2022 Update

      Comparative Appraisal of Intravascular Ultrasound and Optical Coherence Tomography in Invasive Coronary Imaging: 2022 Update

      Although coronary angiography has been well established as a standard modality for percutaneous coronary intervention guidance, recent developments in intravascular imaging techniques, such as intravascular ultrasound and optical coherence tomography, have become increasingly adopted, enabling direct detailed lesion visualization, including lesions beyond the scope of assessment using exclusively angiography. Intravascular imaging modalities have been reported to potentially improve both short- and long-term percutaneous intervention outcomes. This review aims to provide a comparative summary of recent advancements in research regarding the clinical applications and outcomes of intravascular ultrasound and optical coherence tomography.

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    2. Clinical use of intracoronary imaging modalities in Poland. Expert opinion of the Association of Cardiovascular Interventions of the Polish Cardiac Society

      Clinical use of intracoronary imaging modalities in Poland. Expert opinion of the Association of Cardiovascular Interventions of the Polish Cardiac Society

      The paper presents the most common, current indications for the use of intravascular invasive imaging diagnostic techniques, i.e. intravascular ultrasound and optical coherence tomography in Polish invasive cardiology centers. The application of the above-mentioned techniques in the diagnosis of stenosis of the left main coronary artery, optimization of stent implantation procedures, treatment of calcified lesions and other clinically important issues are discussed.

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    3. Atherogenesis in Native Coronary Segments and In-Stent Neoatherogenesis Beyond Three Years After First-Generation Drug-Eluting Stent Implantation: Angiographic and Optical Coherence Tomography Study

      Atherogenesis in Native Coronary Segments and In-Stent Neoatherogenesis Beyond Three Years After First-Generation Drug-Eluting Stent Implantation: Angiographic and Optical Coherence Tomography Study

      Objectives: The mechanisms underlying the development of neoatherosclerosis following stent implantation remain to be further elucidated. The aim of this study was to investigate the association between subclinical in-stent neoatherosclerosis (NA) and atherosclerosis progression of native coronary segments in patients with chronic coronary syndrome 3 and 9 years after first-generation drug-eluting stent implantation. Methods: This is a prespecified analysis of the prospective cohort study evaluating long-term neointimal healing in consecutive patients undergoing elective percutaneous coronary intervention with sirolimus-eluting stent (SES) or paclitaxel-eluting stent (PES) implantation. Quantitative coronary angiography (QCA) was evaluated in non-stented coronary segments. Results: Forty-three patients underwent optical ...

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    4. Serial Baseline, 12-, 24-, and 60-Month Optical Coherence Tomography Evaluation of ST Segment Elevation Myocardial Infarction Patients Treated with Absorb Bioresorbable Vascular Scaffold

      Serial Baseline, 12-, 24-, and 60-Month Optical Coherence Tomography Evaluation of ST Segment Elevation Myocardial Infarction Patients Treated with Absorb Bioresorbable Vascular Scaffold

      Data on long-term neointimal healing and neoatherosclerosis progression after primary percutaneous coronary intervention (PCI) with implantation of everolimus-eluting bioresorbable vascular scaffold (BVS) (ABSORB BVS 1.0, Abbott Vascular) are limited. The mechanisms underlying very late scaffold failure remain to be further elucidated. This study sought to assess healing pattern and presence of neoatherosclerosis. This was a single-center, prospective, longitudinal study with serial optical coherence tomography (OCT) assessment at baseline, 12, 24 and 60 months after PCI performed in 12 patients presenting with ST-segment elevation myocardial infarction (STEMI). The median follow-up was 59 months. The diameter stenosis increased from 7.11 ...

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      Mentions: Abbott
    5. OCT-Derived Plaque Morphology and FFR-Determined Hemodynamic Relevance in Intermediate Coronary Stenoses

      OCT-Derived Plaque Morphology and FFR-Determined Hemodynamic Relevance in Intermediate Coronary Stenoses

      Background: optical coherence tomography (OCT) might allow identifying lesion features reportedly associated with plaque vulnerability and increased risk of clinical events. Previous studies on correlation between OCT and functional lesion significance indices reported contradictory results, yet integration of complementary information from both modalities is gaining increased interest. The aim of the study was to compare plaque morphology using OCT in hemodynamically relevant vs. non-relevant lesions by fractional flow reserve (FFR). Methods: consecutive patients with intermediate grade coronary stenoses by angiography were evaluated by both FFR and OCT in this single-center study. Stenoses were labeled hemodynamically relevant in case of the ...

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    6. Chronic Total Occlusion 5 Years After Bioresorbable Vascular Scaffold Implantation: A Serial Optical Coherence Tomography Assessment

      Chronic Total Occlusion 5 Years After Bioresorbable Vascular Scaffold Implantation: A Serial Optical Coherence Tomography Assessment

      A 66-year-old man presented with ST-segment myocardial infarction. He underwent successful Absorb 1.0 bioresorbable vascular scaffold (Abbott Vascular) implantation. A prespecified 12-month and 24-month coronary angiography and optical coherence tomography showed preserved vessel patency with signs of peristrut low-intensity areas within the neointima and features of atherosclerosis progression at the distal edge of the scaffold (Figure 1). A prespecified angiography at 60 months revealed a total occlusion at the distal part of the scaffold. Within the proximal edge, optical coherence tomography showed a complete absorption of stent struts with a decreased mean scaffold area and diameter (Figure 1). First-generation ...

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    7. Peri-strut low intensity areas and in-scaffold neointima growth after bioresorbable scaffold implantation in Stemi. A serial optical coherence tomography study

      Peri-strut low intensity areas and in-scaffold neointima growth after bioresorbable scaffold implantation in Stemi. A serial optical coherence tomography study

      Background Peri-strut low intensity areas (PLIA) visualized by optical coherence tomography (OCT) have been related to neointimal proliferation and increased incidence of target lesion revascularization in stable coronary artery disease. The aim of this study was to determine the association between PLIA by OCT and the long-term vascular healing response after bioresorbable scaffold (BRS) implantation in the setting of ST-segment elevation myocardial infarction (STEMI). Methods This is a single-centre, longitudinal, cohort study with a serial: baseline, 1, 2 and 5 years OCT evaluation of neointimal response (lumen area and neoatherosclerosis) after percutaneous coronary intervention (PCI) with BRS Absorb™ 1.0 ...

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    8. Second generation, sirolimus‐eluting, bioresorbable Tyrocore scaffold implantation in patients with ST‐segment elevation myocardial infarction: Baseline OCT and 30‐day clinical outcomes – A Fantom Stemi pilot study

      Second generation, sirolimus‐eluting, bioresorbable Tyrocore scaffold implantation in patients with ST‐segment elevation myocardial infarction: Baseline OCT and 30‐day clinical outcomes – A Fantom Stemi pilot study

      Background There is paucity of data on acute performance of Fantom (REVA Medical, CA), a second generation sirolimus‐eluting bioresorbable scaffold (BRS), in ST‐segment elevation myocardial infarction (STEMI) patients undergoing primary percutaneous coronary intervention. The aim of this study was to evaluate safety and efficacy of the Fantom BRS in the acute setting of STEMI characterized by thrombogenic milieu. Methodology Ten STEMI patients treated with a sirolimus‐eluting Fantom BRS were enrolled into prospective, observational study. The scaffold sizing, positioning, and optimization were optical coherence tomography (OCT) guided. The primary end‐point was the device‐oriented composite endpoint (DOCE ...

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    9. A serial three- and nine-year optical coherence tomography evaluation of neoatherosclerosis progression after sirolimus- and paclitaxel-eluting stents implantation

      A serial three- and nine-year optical coherence tomography evaluation of neoatherosclerosis progression after sirolimus- and paclitaxel-eluting stents implantation

      Background: Early-generation drug-eluting stents (DES) have been shown to accelerate neoatherogenesis. Limited optical coherence tomography (OCT) data on the very long-term neoatherosclerosis progression after DES implantation are available. Aim: The aim of this study was a serial OCT evaluation of neoatherosclerosis at 3 and 9 years after implantation of sirolimus-eluting stents (SES) and paclitaxel-eluting stents (PES). Methods: Consecutive patients undergoing elective PCI with SES (Cypher, Cordis) or PES (Taxus, Boston Scientific) were included in this single-centre, longitudinal study. OCT analysis was performed after 3 and 9 years by the independent core laboratory. Results: A total of 39 OCT recordings were ...

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    10. First serial optical coherence tomography assessment at baseline, 12 and 24 months in STEMI patients treated with the second generation ABSORB™ bioresorbable vascular scaffold

      First serial optical coherence tomography assessment at baseline, 12 and 24 months in STEMI patients treated with the second generation ABSORB™ bioresorbable vascular scaffold

      Aims: The aim of the study was to assess the vascular healing response after Absorb bioresorbable vascular scaffold (BVS) implantation in patients with ST segment elevation myocardial infarction (STEMI) utilizing truly serial optical coherence tomography (OCT) examination at baseline, 12- and 24-months. Methods and results: This is the single-centre, prospective, longitudinal study with baseline, 12- and 24-month OCT evaluation of 18 STEMI patients treated with 22 Absorb BVS implantation. The healing pattern was evaluated based upon lumen area, neointimal hyperplasia, strut coverage and apposition. The lumen area decreased at 12 months compared to baseline (8.52± 1.69 mm2 vs ...

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    11. Intravascular imaging of coronary artery disease: recent progress and future directions

      Intravascular imaging of coronary artery disease: recent progress and future directions

      Although coronary angiography represents a well established diagnostic modality for percutaneous coronary intervention guidance, recent intravascular imaging techniques, such as intravascular ultrasound, optical coherence tomography (OCT) and near-infrared spectroscopy offer advantages on top of angiography, enhancing the efficacy of lesion evaluation and potentially optimizing the acute and long-term percutaneous coronary intervention outcomes. In addition, recently new generation imaging options have emerged, such as high-definition intravascular ultrasound, polarization-sensitive OCT, intravascular photoacoustic imaging and ultrafast heartbeat OCT. In this review, the current data on the available intravascular imaging techniques, their clinical utility as well as recent technical progresses will be summarized.

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    12. Optical coherence tomography evaluation of intermediate-term healing of different stent types: systemic review and meta-analysis

      Optical coherence tomography evaluation of intermediate-term healing of different stent types: systemic review and meta-analysis

      Aims The intermediate-term incidence of strut malapposition (SM) and uncovered struts (US), and the degree of neointimal thickness (NIT) according to stent type have not been characterized. Methods and results All studies of >50 patients in which optical coherence tomography was performed between 6 and 12 months after stent implantation were included. The incidences of SM and US were the co-primary end points, while NIT was the secondary end point. A total of 458 citations were initially appraised at the abstract level, and 11 full-text studies (280 652 analysed struts, 921 patients) were assessed. The 6–12 months incidences of ...

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    13. A 12–month angiographic and optical coherence tomography follow-up after bioresorbable vascular scaffold implantation in patients with ST-segment elevation myocardial infarction

      A 12–month angiographic and optical coherence tomography follow-up after bioresorbable vascular scaffold implantation in patients with ST-segment elevation myocardial infarction

      Objectives The aim of the study was to evaluate the healing process at 12 months after ABSORB™ bioresorbable vascular scaffold (BVS) implantation in patients with ST-segment elevation myocardial infarction (STEMI). Background There is currently no data on long-term BVS performance in the acute thrombotic setting. The underlying altered plaque pathomorphology may impact the neointima healing pattern, potentially making it different to that observed in stable coronary artery disease (CAD). Methods We have performed an angiographic and optical coherence tomography (OCT) 12-month follow-up of 19 STEMI patients who were treated with a BVS implantation (23 scaffolds). An independent core laboratory performed ...

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    14. A 12-month angiographic and optical coherence tomography follow-up after bioresorbable vascular scaffold implantation in patients with ST-segment elevation myocardial infarction

      A 12-month angiographic and optical coherence tomography follow-up after bioresorbable vascular scaffold implantation in patients with ST-segment elevation myocardial infarction

       Objectives The aim of the study was to evaluate the healing process at 12 months after ABSORB™ bioresorbable vascular scaffold (BVS) implantation in patients with ST-segment elevation myocardial infarction (STEMI). Background There is currently no data on long-term BVS performance in the acute thrombotic setting. The underlying altered plaque pathomorphology may impact the neointima healing pattern, potentially making it different to that observed in stable coronary artery disease (CAD). Methods We have performed an angiographic and optical coherence tomography (OCT) 12-month follow-up of 19 STEMI patients who were treated with a BVS implantation (23 scaffolds). An independent core laboratory performed ...

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    15. Tissue coverage of paclitaxel and sirolimus eluting stents in long term follow-up: Optical coherence tomography study

      Tissue coverage of paclitaxel and sirolimus eluting stents in long term follow-up: Optical coherence tomography study

      Background: Implantation of drug eluting stents (DES) has become a standard treatment ofpatients undergoing percutaneous coronary intervention (PCI). Incomplete strut coverage isa potential risk factor for late stent thrombosis. Optical coherence tomography (OCT) enablesin vivo identification of incomplete neointimal coverage. Methods: Study included 62 patients after sirolimus eluting stents (SES) or paclitaxel elutingstents (PES) implantation. OCT examination was performed at least 24 months after theinitial procedure (35.4± 9.4 months). In cross-sectional still frames selected from each 1 mm ofanalyzed stents a total number of visible struts and number of struts with or without completeneointimal coverage was assessed. Measurements ...

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    16. Consensus Standards for Acquisition, Measurement, and Reporting of Intravascular Optical Coherence Tomography Studies: A Report From the International Working Group for Intravascular Optical Coherence Tomography Standardization and Validation

      Consensus Standards for Acquisition, Measurement, and Reporting of Intravascular Optical Coherence Tomography Studies: A Report From the International Working Group for Intravascular Optical Coherence Tomography Standardization and Validation

      Objectives: The purpose of this document is to make the output of the International Working Group for Intravascular Optical Coherence Tomography (IWG-IVOCT) Standardization and Validation available to medical and scientific communities, through a peer-reviewed publication, in the interest of improving the diagnosis and treatment of patients with atherosclerosis, including coronary artery disease.Background: Intravascular optical coherence tomography (IVOCT) is a catheter-based modality that acquires images at a resolution of 10 μm, enabling visualization of blood vessel wall microstructure in vivo at an unprecedented level of detail. IVOCT devices are now commercially available worldwide, there is an active user base, and ...

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    1-16 of 16
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    Consensus Standards for Acquisition, Measurement, and Reporting of Intravascular Optical Coherence Tomography Studies: A Report From the International Working Group for Intravascular Optical Coherence Tomography Standardization and Validation Tissue coverage of paclitaxel and sirolimus eluting stents in long term follow-up: Optical coherence tomography study A 12-month angiographic and optical coherence tomography follow-up after bioresorbable vascular scaffold implantation in patients with ST-segment elevation myocardial infarction A 12–month angiographic and optical coherence tomography follow-up after bioresorbable vascular scaffold implantation in patients with ST-segment elevation myocardial infarction Optical coherence tomography evaluation of intermediate-term healing of different stent types: systemic review and meta-analysis Intravascular imaging of coronary artery disease: recent progress and future directions First serial optical coherence tomography assessment at baseline, 12 and 24 months in STEMI patients treated with the second generation ABSORB™ bioresorbable vascular scaffold A serial three- and nine-year optical coherence tomography evaluation of neoatherosclerosis progression after sirolimus- and paclitaxel-eluting stents implantation Second generation, sirolimus‐eluting, bioresorbable Tyrocore scaffold implantation in patients with ST‐segment elevation myocardial infarction: Baseline OCT and 30‐day clinical outcomes – A Fantom Stemi pilot study Peri-strut low intensity areas and in-scaffold neointima growth after bioresorbable scaffold implantation in Stemi. A serial optical coherence tomography study A Deep Learning Framework for the Detection and Quantification of Reticular Pseudodrusen and Drusen on Optical Coherence Tomography Quantitative assessment of textural features in the early detection of diabetic retinopathy with optical coherence tomography angiography