1. Articles mentioning both Evelyn Regar and Jurgen M. Ligthart

    1-24 of 41 1 2 »
    1. EuroIntervention Automated characterisation of lipid core plaques in vivo by quantitative optical coherence tomography tissue type imaging

      EuroIntervention Automated characterisation of lipid core plaques in vivo by quantitative optical coherence tomography tissue type imaging
      Aims: Qualitative criteria for plaque tissue characterisation by OCT are well established, but quantitative methods lack systematic validation in vivo . High optical attenuation coefficient t has been associated with unstable plaque features, such as lipid core. The purpose of this study was to validate optical coherence tomography (OCT) attenuation imaging for tissue characterisation in vivo , specifically to detect lipid core in coronary atherosclerotic plaques, and to evaluate quantitatively the ability ...
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    2. Everolimus-Eluting Bioresorbable Vascular Scaffolds implanted in Coronary Bifurcation Lesions

      Everolimus-Eluting Bioresorbable Vascular Scaffolds implanted in Coronary Bifurcation Lesions
      Background Limited data are available on bioresorbable vascular scaffolds (BVS) performance in bifurcations lesions and on the impact of BVS wider struts on side-branch impairment. Methods Patients with at least one coronary bifurcation lesion involving a side-branch 2 mm in diameter and treated with at least one BVS were examined. Procedural and angiographic data were collected and a dedicated methodology for off-line quantitative coronary angiography (QCA) in bifurcation was applied ...
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    3. Safety of optical coherence tomography in daily practice: a comparison with intravascular ultrasound

      Safety of optical coherence tomography in daily practice: a comparison with intravascular ultrasound
      Aims Previous studies have reported the safety and feasibility of both time-domain optical coherence tomography (TD-OCT) and Fourier-domain OCT (FD-OCT) in highly selected patients and clinical settings. However, the generalizability of these data is limited, and data in unselected patient populations reflecting a routine cathlab practice are lacking. We compared safety of intracoronary FD-OCT imaging to intravascular ultrasound (IVUS) imaging in a large real-world series of consecutive patients who underwent ...
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    4. An Unusual Complication After Bioresorbable Scaffold Implantation Visualization of Intramural Hematoma by Optical Coherence Tomography

      An Unusual Complication After Bioresorbable Scaffold Implantation Visualization of Intramural Hematoma by Optical Coherence Tomography
      A 68-year-old man was treated in our catheterization laboratory for ST-segment elevation myocardial infarction. He had undergone 3.5 18-mm bioresorbable vascular scaffold (BVS) implantation in the proximal left anterior descending coronary artery for stable angina in another institution 2 days before. At presentation, angiography showed a filling defect located 5 mm distally to the scaffolded segment ( Figure 1A ). An attempt at thrombus aspiration was performed, without retrieving any aspiration ...
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    5. Utility of Optical Coherence Tomography Imaging with Angiographic Co-registration for the Guidance of Percutaneous Coronary Intervention

      Utility of Optical Coherence Tomography Imaging with Angiographic Co-registration for the Guidance of Percutaneous Coronary Intervention
      Intracoronary optical coherence tomography (OCT) is a light-based imaging modality able to visualise with high resolution (~10 m) the vascular morphology and the acute and chronic effects of intervention with intracoronary devices. 1,2 OCT could therefore find application in the guidance of percutaneous coronary intervention (PCI), allowing a thorough preprocedural lesion assessment, which enables accurate device sizing, selection of the vessel segment requiring treatment, and, thus, efficient planning of ...
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    6. Multimodality Intra-Arterial Imaging Assessment of the Vascular Trauma Induced by Balloon-Based and Nonballoon-Based Renal Denervation Systems

      Multimodality Intra-Arterial Imaging Assessment of the Vascular Trauma Induced by Balloon-Based and Nonballoon-Based Renal Denervation Systems
      Background Renal denervation is a new treatment considered for several possible indications. As new systems are introduced, the incidence of acute renal artery wall injury with relation to the denervation method is unknown. We investigated the acute repercussion of renal denervation on the renal arteries of patients treated with balloon-based and nonballoon-based denervation systems by quantitative angiography, intravascular ultrasound, and optical coherence tomography (OCT). Methods and Results Twenty-five patients (50 ...
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    7. A novel method to assess coronary artery bifurcations by OCT: cut-plane analysis for side-branch ostial assessment from a main-vessel pullback

      A novel method to assess coronary artery bifurcations by OCT: cut-plane analysis for side-branch ostial assessment from a main-vessel pullback
      Aims In coronary bifurcations assessment, evaluation of side-branch (SB) ostia by an optical coherence tomography (OCT) pullback performed in the main branch (MB) could speed up lesion evaluation and minimize contrast volume. Dedicated software that reconstructs the cross-sections perpendicular to the SB centreline could improve this assessment. We aimed to validate a new method for assessing the SB ostium from an OCT pullback performed in the MB. Methods and results ...
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    8. Optical Coherence Tomography (OCT) Before and After Flowdiverter Treatment in Basilar Dolichoectasia.

      Optical Coherence Tomography (OCT) Before and After Flowdiverter Treatment in Basilar Dolichoectasia.
      Optical Coherence Tomography (OCT) is an endovascular imaging modality that utilises infrared light to create high-resolution images of the vascular system. The use of OCT in cardiology is widely accepted and considered safe for imaging of the coronary artery wall, plaques and assessment of stent deployment. In the literature to date, OCT has not been used in endovascular imaging of neurovascular pathology. In this report we describe the first case ...
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    9. The impact of Fourier-Domain optical coherence tomography catheter induced motion artefacts on quantitative measurements of a PLLA-based bioresorbable scaffold

      The impact of Fourier-Domain optical coherence tomography catheter induced motion artefacts on quantitative measurements of a PLLA-based bioresorbable scaffold
      Intracoronary Fourier-Domain optical coherence tomography (FD-OCT) enables imaging of the coronary artery within 2-4 seconds, a so far unparalleled speed. Despite such fast data acquisition, cardiac and respiratory motion can cause artefacts due to longitudinal displacement of the catheter within the artery. We studied the influence of longitudinal FD-OCT catheter displacement on serial global lumen and scaffold area measurements in coronary arteries of swine that received PLLA-based bioresorbable scaffolds. In ...
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    10. Optical Coherence Tomography-guided Bifurcation Stenting of a Coronary Artery Dissection

      Optical Coherence Tomography-guided Bifurcation Stenting of a Coronary Artery Dissection
      Periprocedural guide-wire induced coronary artery dissection is a rare but potentially serious complication of PCI. Immediate stenting of the entry point is one of the therapeutic options but engaging the guide-wire in the true lumen may be challenging. We report a case of a 55-year-old woman with a guide-wire induced coronary dissection that occurred during treatment of a bifurcation lesion. Optical coherence tomography was instrumental to distinguish true form false ...
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    11. Optical coherence tomography for evaluation of coronary stents in vivo

      Optical coherence tomography for evaluation of coronary stents in vivo
      Coronary optical coherence tomography (OCT) is a light-based imaging modality that emits light in the near-infrared range. Compared with intravascular ultrasound, OCT has an extraordinarily high resolution (nearly tenfold higher), with an axial resolution in the range of 1215 m and a lateral resolution of 2040 m. The main drawback of OCT is its relatively low penetration power, especially into lipid-rich atherosclerotic tissue. Second-generation OCT systems, known as frequency domain ...
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    12. Association of neointimal morphology by optical coherence tomography with rupture of neoatherosclerotic plaque very late after coronary stent implantation.

      Association of neointimal morphology by optical coherence tomography with rupture of neoatherosclerotic plaque very late after coronary stent implantation.
      ...uzas ; Joost Daemen ; Gijs van Soest ; Muthukaruppan Gnanadesigan ; Robert-Jan van Geuns ; Peter de Jaegere ; Evelyn Regar; Association of neointimal morphology by optical coherence tomography with rupture of neoatherosc...
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    13. In-stent neoatherosclerosis: are first generation drug eluting stents different than bare metal stents? an optical coherence tomography study

      In-stent neoatherosclerosis: are first generation drug eluting stents different than bare metal stents? an optical coherence tomography study
      ...touzas ; Joost Daemen ; Gijs van Soest ; Muthukaruppan Gnanadesigan ; Nicholas van Mieghem ; Felix Zijlstra ; Evelyn Regar; In-stent neoatherosclerosis: are first generation drug eluting stents different than bare metal ...
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    14. Feature Of The Week 11/11/12: Characterization of Coronary Bifurcations using Optical Coherence Tomography

      Feature Of The Week 11/11/12: Characterization of Coronary Bifurcations using Optical Coherence Tomography
      Correct characterization of coronary bifurcations by optical coherence tomography (OCT) is critical in the evaluation of lesions, dedicated bifurcation stents and stent techniques. Assessment is limited by the need for acquiring images in both the main branch (MB) and the dissection prone side branch (SB). Analysis poses the significant risk of OCT cross sections not being perpendicular to the true vessel centerline due to imaging wires being non-parallel to the ...
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    15. In vivo comparison of arterial lumen dimensions assessed by co-registered three-dimensional (3D) quantitative coronary angiography, intravascular ultrasound and optical coherence tomography

      In vivo comparison of arterial lumen dimensions assessed by co-registered three-dimensional (3D) quantitative coronary angiography, intravascular ultrasound and optical coherence tomography
      This study sought to compare lumen dimensions as assessed by 3D quantitative coronary angiography (QCA) and by intravascular ultrasound (IVUS) or optical coherence tomography (OCT), and to assess the association of the discrepancy with vessel curvature. Coronary lumen dimensions often show discrepancies when assessed by X-ray angiography and by IVUS or OCT. One source of error concerns a possible mismatch in the selection of corresponding regions for the comparison. Therefore ...
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    16. Five-Year Optical Coherence Tomography Follow-Up of an Everolimus-Eluting Bioresorbable Vascular Scaffold: Changing the Paradigm of Coronary Stenting?

      Five-Year Optical Coherence Tomography Follow-Up of an Everolimus-Eluting Bioresorbable Vascular Scaffold: Changing the Paradigm of Coronary Stenting?
      ...en Witberg, CCRN; 6. Robert-Jan van Geuns, MD, PhD; 7. George Sianos, MD, PhD; 8. Felix Zijlstra, MD, PhD; 9. Evelyn Regar, MD, PhD 1. From the Department of Interventional Cardiology, Thoraxcentre, Erasmus University Me...
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    17. In-stent neoatherosclerosis: a cause of late stent thrombosis in a patient with "full metal jacket" 15 years after implantation: insights from optical coherence tomography

      In-stent neoatherosclerosis: a cause of late stent thrombosis in a patient with "full metal jacket" 15 years after implantation: insights from optical coherence tomography
      ... no relationships relevant to the contents of this paper to disclose.Reprint requests and correspondence: Dr. Evelyn Regar, Department of Cardiology, Thoraxcenter, BA-585, Erasmus University Medical Centre's Gravendijkwa...
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    18. Plaque sealing and passivation with a mechanical self-expanding low outward force nitinol VShield device for the treatment of intravascular ultrasound and optical coherence tomography-derived thin cap fibroatheromas (TCFAS) in native coronary arteries

      Plaque sealing and passivation with a mechanical self-expanding low outward force nitinol VShield device for the treatment of intravascular ultrasound and optical coherence tomography-derived thin cap fibroatheromas (TCFAS) in native coronary arteries
      Aims: The aim of the pilot SECRITT trial was to evaluate the safety and feasibility of sealing the high risk IVUS and optical coherence tomography-derived thin cap fibroatheroma (TCFA), with a dedicated nitinol self-expanding vShield device. Methods and results: After screening with angiography, fractional flow reserve (FFR), intravascular ultrasound virtual histology (IVUS-VH) and optical coherence tomography (OCT), 23 patients met enrolment criteria (presence of non-obstructive VH-derived TCFA lesion with thin ...
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    19. Invasive imaging of the coronary atherosclerotic plaque

      Invasive imaging of the coronary atherosclerotic plaque
      Coronary atherosclerosis has a high prevalence and is known as the leading cause of death worldwide. Clinically, coronary atherosclerosis is routinely evaluated by coronary angiography, which provides a luminogram of the coronary artery and allows for recognizing lumen narrowing. However, angiography does not allow for the direct assessment of the disease process within the coronary vessel wall. Today, a number of catheter-based imaging methods can overcome this shortcoming and provide ...
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    20. Interstudy reproducibility of the second generation, Fourier domain optical coherence tomography in patients with coronary artery disease and comparison with intravascular ultrasound: a study applying automated contour detection

      Interstudy reproducibility of the second generation, Fourier domain optical coherence tomography in patients with coronary artery disease and comparison with intravascular ultrasound: a study applying automated contour detection
      Recently, Fourier domain OCT (FD-OCT) has been introduced for clinical use. This approach allows in vivo, high resolution (15 micron) imaging with very fast data acquisition, however, it requires brief flushing of the lumen during imaging. The reproducibility of such fast data acquisition under intracoronary flush application is poorly understood. To assess the inter-study variability of FD-OCT and to compare lumen morphometry to the established invasive imaging method, IVUS. 18 ...
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    21. 1-24 of 41 1 2 »
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