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White TG, Santhumayor BA, Turpin J, Shah K, Toscano D, Teron I, Link T, Patsalides A, Woo HH. Flow diverter surface modifications for aneurysm treatment: A review of the mechanisms and data behind existing technologies. Interv Neuroradiol 2023:15910199231207550. [PMID: 37899636 DOI: 10.1177/15910199231207550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023] Open
Abstract
Flow diversion (FD) has become a mainstay treatment for large wide-necked aneurysms. Despite excellent safety and efficacy, the risk of thromboembolic complications necessitates the use of dual antiplatelet therapy (DAPT). The use of DAPT makes hemorrhagic complications of stenting carry high morbidity and mortality. Additionally, DAPT usage carries a risk of "nuisance" complications that do not directly impact intracranial circulation but need to be managed nonetheless. To circumvent this issue, the most recent generation of flow diverters have undergone surface modification with various compounds to confer blood compatibility to limit clotting and thrombosis. While these newer generation flow diverters are marketed to enhance ease of deployment, the goal is to eventually facilitate single antiplatelet use with flow diverter treatment. This generation of FDs have potential to expand indications beyond unruptured wide-necked aneurysms to include ruptured intracranial aneurysms without the necessity of DAPT. Currently, no comprehensive review details the molecular mechanisms and pre-clinical and clinical data on these modifications. We seek to fill this gap in the literature by consolidating information on the coating technology for four major FDs currently in clinical use-PipelineTM Flex and Vantage Shield TechnologyTM, FREDTMX, p48/64 hydrophilic coating, and Acandis Dervio® 2heal-to serve as a reference guide in neurointerventional aneurysm treatment. Although the Balt silkTM was one of the first FDs, it is uncoated, thus we will not cover this device in our review. A literature review was performed to obtain information on each coating technology for the major flow diverters currently on the market using international databases (PUBMED, Embase, Medline, Google Scholar). The search criteria used the keywords for each coating technology of interest "phosphorylcholine," "poly 2-methoxyethyl acrylate," "hydrophilic polymer coating," and "fibrin-heparin" Keywords related to the device names "Pipeline Shield," "Pipeline Shield with Flex Technology," "FRED," "FREDX," "p64," "p64-HPC," "Derivo 2heal" were also used. Studies that detailed the mechanism of action of the coating, any pre-clinical studies with surface-modified intravascular devices, and any clinical retrospective series, prospective series, or randomized clinical trials with surface-modified devices for aneurysm treatment were included.
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Affiliation(s)
- Timothy G White
- Department of Neurosurgery, North Shore University Hospital, Donald and Barbara Zucker School of Medicine, Manhasset, NY, USA
| | - Brandon A Santhumayor
- Department of Neurosurgery, North Shore University Hospital, Donald and Barbara Zucker School of Medicine, Manhasset, NY, USA
| | - Justin Turpin
- Department of Neurosurgery, North Shore University Hospital, Donald and Barbara Zucker School of Medicine, Manhasset, NY, USA
| | - Kevin Shah
- Department of Neurosurgery, North Shore University Hospital, Donald and Barbara Zucker School of Medicine, Manhasset, NY, USA
| | - Daniel Toscano
- Department of Neurosurgery, North Shore University Hospital, Donald and Barbara Zucker School of Medicine, Manhasset, NY, USA
| | - Ina Teron
- Department of Neurosurgery, North Shore University Hospital, Donald and Barbara Zucker School of Medicine, Manhasset, NY, USA
| | - Thomas Link
- Department of Neurosurgery, North Shore University Hospital, Donald and Barbara Zucker School of Medicine, Manhasset, NY, USA
| | - Athos Patsalides
- Department of Neurosurgery, North Shore University Hospital, Donald and Barbara Zucker School of Medicine, Manhasset, NY, USA
| | - Henry H Woo
- Department of Neurosurgery, North Shore University Hospital, Donald and Barbara Zucker School of Medicine, Manhasset, NY, USA
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Abstract
PURPOSE OF THE REVIEW This article reviews common imaging modalities used in diagnosis and management of acute stroke. Each modality is discussed individually and clinical scenarios are presented to demonstrate how to apply these modalities in decision-making. RECENT FINDINGS Advances in neuroimaging provide unprecedented accuracy in determining tissue viability as well as tissue fate in acute stroke. In addition, advances in machine learning have led to the creation of decision support tools to improve the interpretability of these studies. SUMMARY Noncontrast head computed tomography (CT) remains the most commonly used initial imaging tool to evaluate stroke. Its exquisite sensitivity for hemorrhage, rapid acquisition, and widespread availability make it the ideal first study. CT angiography (CTA), the most common follow-up study after noncontrast head CT, is used primarily to identify intracranial large vessel occlusions and cervical carotid or vertebral artery disease. CTA is highly sensitive and can improve accuracy of patient selection for endovascular therapy through delineations of ischemic core. CT perfusion is widely used in endovascular therapy trials and benefits from multiple commercially available machine-learning packages that perform automated postprocessing and interpretation. Magnetic resonance imaging (MRI) and magnetic resonance angiography (MRA) can provide valuable insights for outcomes prognostication as well as stroke etiology. Optical coherence tomography (OCT), positron emission tomography (PET), single-photon emission computerized tomography (SPECT) offer similar insights. In the clinical scenarios presented, we demonstrate how multimodal imaging approaches can be tailored to gain mechanistic insights for a range of cerebrovascular pathologies.
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Affiliation(s)
- Alexandra L Czap
- From the Department of Neurology, UT Health McGovern Medical School, Houston, TX.
| | - Sunil A Sheth
- From the Department of Neurology, UT Health McGovern Medical School, Houston, TX
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Yang B, Feng Y, Ma Y, Wang Y, Chen J, Li L, Dong J, Zhang B, Gao P, Chen Y, Dmytriw AA, Jiao L. Frequency-Domain Optical Coherence Tomography for Intracranial Atherosclerotic Stenosis: Feasibility, Safety, and Preliminary Experience. Front Neurol 2021; 12:678443. [PMID: 34220686 PMCID: PMC8247572 DOI: 10.3389/fneur.2021.678443] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 05/14/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Despite advances in non-invasive imaging, the characterization of atherosclerotic plaque remains superior with frequency-domain optical coherence tomography (FD-OCT) in the clinical coronary and experimental cerebrovascular literature. An assessment of the feasibility and safety of FD-OCT for intracranial atherosclerotic stenosis (ICAS) is desirable. Methods: We analyzed a cohort of all consecutive FD-OCT evaluations for ICAS performed at our institution from April 2017 to August 2018 (16 months) in patients who suffered from transient ischemic attack (TIA) or non-disabling stroke despite optimal medical management within 90 days of admission attributable to angiographically verified 70-99% stenosis of an intracranial artery. Results: Thirty-three patients harboring 36 lesions with an average age of (57.6 ± 7.1) years (male sex 27 cases) comprising nine cases of lesions located within the anterior circulation and 24 cases within the posterior circulation were identified. Of the 33 patients with 36 lesions, the FD-OCT imaging catheter detected 35/36 (97%) lesions except in one case in which the FD-OCT catheter failed to navigate excessively tortuous vessels, and FD-OCT images in 27 patients (81.8%) were finally obtained successful, where the target lesion was fully visible, and image quality under at least one pullback was graded 2 or 3. There were no symptomatic complications. Blood flow was the most common artifact encountered (51.9%). Conclusion: FD-OCT is safe and feasible for the assessment of ICAS in the anterior and posterior circulation. The use of diagnostic interferometry will have to be weighed against its cost, and these preliminary findings should be verified by prospective large-scale studies.
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Affiliation(s)
- Bin Yang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yiding Feng
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yan Ma
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yabing Wang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Jian Chen
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Long Li
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Jia Dong
- Department of Interventional Neuroradiology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Bairu Zhang
- Department of Interventional Neuroradiology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Peng Gao
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.,Department of Interventional Neuroradiology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yanfei Chen
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Adam A Dmytriw
- Neuroradiology & Neurointervention Service, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States
| | - Liqun Jiao
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.,Department of Interventional Neuroradiology, Xuanwu Hospital, Capital Medical University, Beijing, China
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Osipova O, Popova I, Starodubtsev V, Bugurov S, Karpenko A. Is it possible to prevent cerebral embolization by improving the design and technology of carotid stent implantation? Expert Rev Cardiovasc Ther 2020; 18:891-904. [PMID: 33021842 DOI: 10.1080/14779072.2020.1833718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
INTRODUCTION The prevention of atherosclerotic plaque fragmentation during carotid artery stenting is a fundamental problem in decreasing the risk of disability of patients. The goal of this review is to clarify whether the stent design can have a decisive impact on the rate of intraoperative and postoperative complications. AREAS COVERED Different designs of the carotid stents are briefed and the advantages and disadvantages of different stent designs are discussed as well as the results of their clinical use. Various solutions are presented to reduce cerebral embolism during carotid artery stenting. EXPERT OPINION There is no conclusive evidence for the benefits of closed cell and hybrid stents. The stent design cannot completely resolve the problem of cerebral embolism. Most of the events of cerebral microembolism occur at the stages of stent delivery rather than protrusion of an atherosclerotic plaque in the long-term follow-up. Most likely, minimization of the risks for periprocedural and postprocedural strokes requires not only the new solutions in stent design as well as the corresponding delivery systems and brain embolic protection systems, but also the new strategies of preprocedural drug stabilization of the atherosclerotic plaque in the carotid artery. Abbreviations: CAS, carotid artery stenting; CE, carotid endarterectomy; DW-MRI, diffusion-weighted magnetic resonance imaging; ECA, external carotid artery; ICA, internal carotid artery; IVUS, intravascular ultrasound examination; OCT, optical coherence tomography.
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Affiliation(s)
- Olesia Osipova
- Center for Vascular and Hybrid Surgery, Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation , Novosibirsk, Russian Federation
| | - Irina Popova
- Center for Vascular and Hybrid Surgery, Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation , Novosibirsk, Russian Federation
| | - Vladimir Starodubtsev
- Center for Vascular and Hybrid Surgery, Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation , Novosibirsk, Russian Federation
| | - Savr Bugurov
- Center for Vascular and Hybrid Surgery, Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation , Novosibirsk, Russian Federation
| | - Andrey Karpenko
- Center for Vascular and Hybrid Surgery, Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation , Novosibirsk, Russian Federation
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Pasarikovski CR, Ku JC, Priola SM, da Costa L, Yang VXD. Endovascular optical coherence tomography imaging in cerebrovascular disease. J Clin Neurosci 2020; 80:30-37. [PMID: 33099363 DOI: 10.1016/j.jocn.2020.07.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/18/2020] [Accepted: 07/27/2020] [Indexed: 10/23/2022]
Abstract
Endovascular optical coherence tomography (OCT) is the highest resolution imaging modality currently available with spatial resolution of 10 µm. Although originally developed for interventional cardiology, the ability to visualize the luminal environment and anatomy, along with the stent-vessel interaction could be of great utility for various cerebrovascular diseases, and the adoption of endovascular OCT imaging in the evolving field of interventional neuroradiology seems instinctive. The purpose of this study is to conduct a systematic review of the literature regarding applications of endovascular OCT in the diagnosis and treatment of cerebrovascular diseases. In addition, the authors report their institutional experience with the use of OCT in carotid atherosclerotic disease, cerebral aneurysms, and acute ischemic stroke. A systematic review of the literature was undertaken. Peer-reviewed articles were collected through MEDLINE, Embase, Scopus, and Cochrane Central Register of Controlled Trials (CENTRAL) searches through March 2020. A total of 34 studies with 598 patients were included in the qualitative synthesis. These include 23 studies of carotid atherosclerotic disease, 7 studies of cerebral aneurysms, and 4 studies of non-aneurysmal posterior circulation pathology. OCT imaging was feasible in 94% of patients with 0.6% complication rate. Endovascular OCT appears to be safe and feasible, allowing clinicians to visualize stent-vessel interactions, aneurysmal healing, and vulnerable atherosclerotic plaque features. OCT carries great promise, however additional investigations are needed before any imposing statement can be made about the role of OCT in cerebrovascular imaging.
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Affiliation(s)
| | - Jerry C Ku
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Stefano M Priola
- Division of Neurosurgery, Department of Surgery, Health Sciences North, Sudbury, Ontario, Canada; Norther Ontario School of Medicine, Sudbury, Ontario, Canada
| | - Leodante da Costa
- Division of Neurosurgery, Sunnybrook Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Victor X D Yang
- Division of Neurosurgery, Sunnybrook Hospital, University of Toronto, Toronto, Ontario, Canada; Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
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Affiliation(s)
- Harald Mudra
- Heart and Vascular Center Maffeistrasse, Munich, Germany.
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7
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Stabile E, de Donato G, Musialek P, Deloose K, Nerla R, Sirignano P, Mazurek A, Mansour W, Fioretti V, Esposito F, Chianese S, Bosiers M, Setacci C, Speziale F, Micari A, Esposito G. Use of Dual-Layered Stents for Carotid Artery Angioplasty. JACC Cardiovasc Interv 2020; 13:1709-1715. [DOI: 10.1016/j.jcin.2020.03.048] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 03/11/2020] [Accepted: 03/31/2020] [Indexed: 12/24/2022]
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Bugurov SV, Karpenko AA, Ignatenko PV, Popova IV, Starodubtsev VB, Saaia SB, Zeĭdlits GA, Brusianskaia AS, Fatulloeva SS, Bochkov IV, Osipova OS. Stenting of the carotid artery with CGuard and Acculink stents: interim results of a randomized trial. ANGIOLOGII︠A︡ I SOSUDISTAI︠A︡ KHIRURGII︠A︡ = ANGIOLOGY AND VASCULAR SURGERY 2019; 25:64-75. [PMID: 31855202 DOI: 10.33529/angio2019418] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AIM The study was undertaken to evaluate safety and efficacy of carotid stents Acculink (open-cell carotid stent) and CGuard (closed-cell type stent) in treatment of patients presenting with atherosclerotic lesions of carotid arteries. PATIENTS AND METHODS The study enrolled a total of 50 patients diagnosed with haemodynamically significant stenosis of the carotid artery and divided into two groups of 25 patients each. Group One patients received Acculink stents and Group Two patients underwent implantation of CGuard stents. Ultrasonographic examination was performed in all patients before and after surgery, as well as at 6 and 12 months thereafter; magnetic resonance imaging of the brain was carried out before and after surgery (at 24-48 postoperative hours and on POD 30). The entire period of follow up included 5 examinations of each patient by a neurologist. The obtained findings were statistically analysed using the Statistica 12 software (StatSoft, USA). The level of deviation of the null hypothesis of the absence of differences between the groups was regarded as significant at p<0.05. RESULTS The technical success of the operation amounted to 100% in both groups. There were no complications (such as haematoma, arterial dissection, etc.) in the area of the approach in either group. The findings of ultrasonographic examination of the extracranial portion of the carotid arteries demonstrated a significant difference in the form of a decrease in the degree of narrowing of the operated vessel (p<0.05) as compared with its initial parameters. The number of the detected foci of acute cerebral ischaemia in the postoperative period (24-48 h) amounted to: in the Acculink group - 14 (56%), in the CGuard group - 12 (48%), p>0.77. Of these, multiple foci in Group One were encountered significantly more often than in Group Two (p=0.02). The patients with the Acculink stent implanted were found to develop 2 (4%) episodes of acute cerebral circulation impairment: the first one occurring after 24 hours and the second one at 28 days after stenting, with no such complications observed in Group Two patients. CONCLUSION Comparing the two stents (Acculink and CGuard) demonstrated no advantages with respect to safety and efficacy of either stent in endovascular treatment of patients with atherosclerotic lesions of brachiocephalic arteries.
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Affiliation(s)
- S V Bugurov
- Centre of Vascular and Hybrid Surgery, National Medical Research Centre named after Academician E.N. Meshalkin under the RF Ministry of Public Health, Novosibirsk, Russia
| | - A A Karpenko
- Centre of Vascular and Hybrid Surgery, National Medical Research Centre named after Academician E.N. Meshalkin under the RF Ministry of Public Health, Novosibirsk, Russia
| | - P V Ignatenko
- Centre of Vascular and Hybrid Surgery, National Medical Research Centre named after Academician E.N. Meshalkin under the RF Ministry of Public Health, Novosibirsk, Russia
| | - I V Popova
- Centre of Vascular and Hybrid Surgery, National Medical Research Centre named after Academician E.N. Meshalkin under the RF Ministry of Public Health, Novosibirsk, Russia
| | - V B Starodubtsev
- Centre of Vascular and Hybrid Surgery, National Medical Research Centre named after Academician E.N. Meshalkin under the RF Ministry of Public Health, Novosibirsk, Russia
| | - Sh B Saaia
- Centre of Vascular and Hybrid Surgery, National Medical Research Centre named after Academician E.N. Meshalkin under the RF Ministry of Public Health, Novosibirsk, Russia
| | - G A Zeĭdlits
- Centre of Vascular and Hybrid Surgery, National Medical Research Centre named after Academician E.N. Meshalkin under the RF Ministry of Public Health, Novosibirsk, Russia
| | - A S Brusianskaia
- Centre of Vascular and Hybrid Surgery, National Medical Research Centre named after Academician E.N. Meshalkin under the RF Ministry of Public Health, Novosibirsk, Russia
| | - Sh Sh Fatulloeva
- Centre of Vascular and Hybrid Surgery, National Medical Research Centre named after Academician E.N. Meshalkin under the RF Ministry of Public Health, Novosibirsk, Russia
| | - I V Bochkov
- Centre of Vascular and Hybrid Surgery, National Medical Research Centre named after Academician E.N. Meshalkin under the RF Ministry of Public Health, Novosibirsk, Russia
| | - O S Osipova
- Centre of Vascular and Hybrid Surgery, National Medical Research Centre named after Academician E.N. Meshalkin under the RF Ministry of Public Health, Novosibirsk, Russia
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Musiałek P, Roubin GS. Commentary: Double-Layer Carotid Stents: From the Clinical Need, through a Stent-in-Stent Strategy, to Effective Plaque Isolation… the Journey Toward Safe Carotid Revascularization Using the Endovascular Route. J Endovasc Ther 2019; 26:572-577. [DOI: 10.1177/1526602819861546] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Piotr Musiałek
- Jagiellonian University Department of Cardiac & Vascular Diseases, John Paul II Hospital, Krakow, Poland
| | - Gary S. Roubin
- Cardiovascular Associates of the Southeast, Birmingham, AL, USA
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Štěchovský C, Hájek P, Horváth M, Veselka J. Effect of stenting on the near-infrared spectroscopy-derived lipid core burden index of carotid artery plaque. EUROINTERVENTION 2019; 15:e289-e296. [PMID: 29957596 DOI: 10.4244/eij-d-17-01054] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
AIMS Catheter-based intravascular near-infrared spectroscopy (NIRS) detects a lipid signal from atherosclerotic plaque. The aim of this study was to describe the effect of carotid artery stenting (CAS) on the lipid signal in a carotid stenosis. METHODS AND RESULTS We performed NIRS combined with intravascular ultrasound (IVUS) during 120 CAS procedures. Minimal luminal area (MLA) and plaque burden (PB) at the site of MLA were measured with IVUS and lipid core burden index (LCBI), maximal LCBI in a 4 mm segment of the artery (LCBImax) and LCBI in a 4 mm segment at the site of MLA (LCBImla) with NIRS-derived chemograms. NIRS-IVUS imaging was performed at baseline, after stent implantation and after balloon post-dilatation. The most common lesion type was the fibrocalcific plaque (76%). Lipid-rich plaque (LCBImax ≥400) was present in 33% of carotid stenoses and in 20% at the site of MLA. Median MLA increased significantly from baseline to stent implantation (3.63 mm2 to 5.56 mm2, p<0.001) and to post-dilatation (5.56 mm2 to 12.03 mm2, p<0.001). Median LCBI, LCBImax and LCBImla significantly decreased from baseline to stent implantation: LCBI (60 to 8, p<0.001), LCBImax (294 to 60, p<0.001) and LCBImla (124 to 0, p<0.001). Post-dilatation of the stent had no further significant effect on median LCBI (8 to 5, p=0.890), LCBImax (60 to 50, p=0.690) and LCBImla (0 to 0, p=0.438). CONCLUSIONS Carotid artery stenting significantly reduced the NIRS-derived lipid core burden index at the stented segment.
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Affiliation(s)
- Cyril Štěchovský
- Department of Cardiology, Second Faculty of Medicine, Charles University, University Hospital Motol, Prague, Czech Republic
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Stabile E, de Donato G, Musialek P, De Loose K, Nerla R, Sirignano P, Chianese S, Mazurek A, Tesorio T, Bosiers M, Setacci C, Speziale F, Micari A, Esposito G. Use of Dual-Layered Stents in Endovascular Treatment of Extracranial Stenosis of the Internal Carotid Artery. JACC Cardiovasc Interv 2018; 11:2405-2411. [DOI: 10.1016/j.jcin.2018.06.047] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 06/06/2018] [Accepted: 06/26/2018] [Indexed: 12/24/2022]
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Optical Coherence Tomography. Stroke 2018; 49:1044-1050. [DOI: 10.1161/strokeaha.117.019818] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Revised: 12/22/2017] [Accepted: 01/09/2018] [Indexed: 11/16/2022]
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Safian RD. Carotid stenting with double layered stents: Double trouble or double benefit? Catheter Cardiovasc Interv 2018. [PMID: 29532642 DOI: 10.1002/ccd.27562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The use of double layer (covered) stents during carotid artery stenting (CAS) appears to be safe; attenuation of plaque prolapse and distal embolization is reasonable but unproven. Double layer stents are commercially available in Europe but not in the United States; similar benefits might be obtained by implanting two self-expanding stents, to decrease the effective free cell area. Embolic protection devices (EPDs) are recommended in all CAS patients; the use of double layer stents does not eliminate the need for EPDs.
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Affiliation(s)
- Robert D Safian
- Department of Cardiovascular Medicine, Beaumont Health, Royal Oak, Michigan
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14
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Sannino A, Giugliano G, Toscano E, Schiattarella GG, Franzone A, Tesorio T, Trimarco B, Esposito G, Stabile E. Double layered stents for carotid angioplasty: A meta-analysis of available clinical data. Catheter Cardiovasc Interv 2017; 91:751-757. [DOI: 10.1002/ccd.27421] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 09/26/2017] [Accepted: 10/30/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Anna Sannino
- Division of Cardiology; University of Naples “Federico II”; Naples Italy
- Department of Advanced Biomedical Sciences; University of Naples “Federico II”; Naples Italy
| | - Giuseppe Giugliano
- Division of Cardiology; University of Naples “Federico II”; Naples Italy
- Department of Advanced Biomedical Sciences; University of Naples “Federico II”; Naples Italy
| | - Evelina Toscano
- Division of Cardiology; University of Naples “Federico II”; Naples Italy
- Department of Advanced Biomedical Sciences; University of Naples “Federico II”; Naples Italy
| | - Gabriele G. Schiattarella
- Division of Cardiology; University of Naples “Federico II”; Naples Italy
- Department of Advanced Biomedical Sciences; University of Naples “Federico II”; Naples Italy
| | - Anna Franzone
- Division of Cardiology; University of Naples “Federico II”; Naples Italy
- Department of Advanced Biomedical Sciences; University of Naples “Federico II”; Naples Italy
| | - Tullio Tesorio
- Division of Invasive Cardiology; Clinica Montevergine; Mercogliano Italy
| | - Bruno Trimarco
- Division of Cardiology; University of Naples “Federico II”; Naples Italy
- Department of Advanced Biomedical Sciences; University of Naples “Federico II”; Naples Italy
| | - Giovanni Esposito
- Division of Cardiology; University of Naples “Federico II”; Naples Italy
- Department of Advanced Biomedical Sciences; University of Naples “Federico II”; Naples Italy
| | - Eugenio Stabile
- Division of Cardiology; University of Naples “Federico II”; Naples Italy
- Department of Advanced Biomedical Sciences; University of Naples “Federico II”; Naples Italy
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Umemoto T, de Donato G, Pacchioni A, Reimers B, Ferrante G, Isobe M, Setacci C. Optical coherence tomography assessment of newgeneration mesh-covered stents after carotid stenting. EUROINTERVENTION 2017; 13:1347-1354. [DOI: 10.4244/eij-d-16-00866] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Musialek P, Stabile E. Residual plaque prolapse with novel dual-layer carotid stents: is it mesh-covered or not? EUROINTERVENTION 2017; 13:1266-1268. [DOI: 10.4244/eijv13i11a199] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Dohad S, Zhu A, Krishnan S, Wang F, Wang S, Cox J, Henry TD. Optical coherence tomography guided carotid artery stent procedure: technique and potential applications. Catheter Cardiovasc Interv 2017; 91:521-530. [PMID: 29044926 DOI: 10.1002/ccd.27344] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 08/05/2017] [Accepted: 08/28/2017] [Indexed: 11/10/2022]
Abstract
OBJECTIVES To (1) present a guide on how to perform optical coherence tomography (OCT) in carotid artery stenting (CAS), to (2) highlight several instructive cases illustrating OCT-guidance as an interventional strategy, and to (3) present the largest case-series of OCT-guided CAS performed in North America, demonstrating its feasibility as an imaging modality in this setting. BACKGROUND OCT is an intravascular imaging method that captures images with an axial resolution 10 times higher than intravascular ultrasound. OCT has proven to be a useful modality in coronary angiography and may have similar applications in evaluating carotid atherosclerotic disease. METHODS We compared our experience in CAS utilizing OCT (40 patients) versus that of CAS without OCT guidance (52 patients). RESULTS No strokes or deaths occurred in either group postprocedurally or at 12 months. Fluoroscopy time was reduced in the OCT arm (14 ± 1 vs. 16 ± 1 min). Postprocedural creatinine levels were identical (1 ± 0 mg/dl, P = 0.96). Procedure time (96 ± 8 vs. 80 ± 3 min, P = 0.06) and contrast use (94 ± 4 vs. 83 ± 4 ml, P = 0.05) was slightly elevated in the OCT arm. CONCLUSIONS We established a standardized protocol to consistently obtain OCT images that helped guide interventional decision-making during CAS. OCT imaging in the carotids requires a higher contrast load and prolongs procedure time. However, it can be performed without significant increases in fluoroscopy time or negatively affecting renal function. There were no negative safety signals in this pilot study.
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Affiliation(s)
- Suhail Dohad
- Cedars-Sinai Heart Institute, Los Angeles, California
| | - Alexander Zhu
- Cedars-Sinai Heart Institute, Los Angeles, California
| | | | - Frances Wang
- Cedars-Sinai Heart Institute, Los Angeles, California
| | - Serena Wang
- Cedars-Sinai Medical Center, Los Angeles, California
| | - Justin Cox
- Cedars-Sinai Heart Institute, Los Angeles, California
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Musiałek P, Hopkins LN, Siddiqui AH. One swallow does not a summer make but many swallows do: accumulating clinical evidence for nearly-eliminated peri-procedural and 30-day complications with mesh-covered stents transforms the carotid revascularisation field. ADVANCES IN INTERVENTIONAL CARDIOLOGY 2017; 13:95-106. [PMID: 28798779 PMCID: PMC5545669 DOI: 10.5114/pwki.2017.69012] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 07/10/2017] [Indexed: 02/07/2023] Open
Abstract
Atherosclerotic carotid artery stenosis (CS) continues to be a common cause of acute ischaemic stroke. Optimised medical therapy (OMT), the first-line treatment modality in CS, may reduce or delay - but it does not abolish - CS-related strokes. As per current AHA/ASA and ESC/ESVS/ESO guidelines, carotid artery stenting (CAS) is a less-invasive alternative to carotid endarterectomy (CEA) for CS revascularisation in primary and secondary stroke prevention. Ten-year follow-up from the CREST trial in patients with symptomatic and asymptomatic CS confirmed equipoise of CAS and CEA in the primary endpoint. Nevertheless CAS - using a widely open-cell, first-generation stent and first-generation (distal/filter) neuroprotection - has been criticised for its relative excess of (mostly minor) strokes by 30 days, a significant proportion of which were post-procedural. Atherosclerotic plaque protrusion through conventional carotid stent struts, confirmed on intravascular imaging, has been implicated as a leading mechanism of the relative excess of strokes with CAS vs. CEA, including delayed strokes with CAS. Different designs of mesh-covered carotid stents have been developed to prevent plaque prolapse. Several multi-centre/multi-specialty clinical studies with CGurad MicroNet-Covered Embolic Prevention Stent System (EPS) and RoadSaver/Casper were recently published and included routine DW-MRI cerebral imaging peri-procedurally and at 30 days (CGuard EPS). Data from more than 550 patients in mesh-covered carotid stent clinical studies to-date show an overall 30-day complication rate of ~1% with near-elimination of post-procedural events. While more (and long-term) evidence is still anticipated, these results - taken together with optimised intra-procedural neuroprotection in CAS (increased use of proximal systems including trans-carotid dynamic flow reversal) and the positive 12-month mesh-covered stent data reports in 2017 - are transforming the carotid revascularisation field today. Establishing effective algorithms to identify the asymptomatic subjects at stroke risk despite OMT, and large-scale studies with mesh-covered stents including long-term clinical and duplex ultrasound outcomes, are the next major goals.
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Affiliation(s)
- Piotr Musiałek
- Department of Cardiac and Vascular Diseases, Jagiellonian University, School of Medicine, John Paul II Hospital, Krakow, Poland
| | - L. Nelson Hopkins
- Departments of Neurosurgery and Radiology, School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Jacobs Institute, Gates Vascular Institute Kaleida Health, Buffalo, New York, USA
| | - Adnan H. Siddiqui
- Departments of Neurosurgery and Radiology, School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Jacobs Institute, Gates Vascular Institute Kaleida Health, Buffalo, New York, USA
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Harada K, Oshikata S, Kajihara M. Optical coherence tomography evaluation of tissue prolapse after carotid artery stenting using closed cell design stents for unstable plaque. J Neurointerv Surg 2017; 10:229-234. [PMID: 28360353 DOI: 10.1136/neurintsurg-2017-013004] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 03/09/2017] [Accepted: 03/10/2017] [Indexed: 01/01/2023]
Abstract
BACKGROUND AND PURPOSE During carotid artery stenting (CAS) with the use of closed cell design stents for unstable plaques, tissue prolapse between stent struts was evaluated by optical coherence tomography (OCT). METHODS 14 carotid stenosis lesions diagnosed as unstable plaques by MRI were evaluated by OCT imaging during CAS using closed cell stents. Cross sectional OCT images within the stented segment were evaluated at 1 mm intervals. The slice rate for the presence of tissue prolapse between the struts was calculated. RESULTS No intra-procedural complications occurred. After single stent placement, plaque prolapse was observed in all cases. Slices with any and >500 µm tissue prolapse were seen in 30% and 7.8% of cases, respectively. In 5 of 7 lesions with tissue prolapse >500 µm, additional stents were overlapped. In cases with overlapping stents, slices with any tissue prolapse were significantly decreased from 26% to 16% (p=0.008); in particular, the occurrence of tissue prolapse >500 µm was significantly decreased from 15% to 2.3% (p<0.001). In one case of >500 µm tissue prolapse without an overlapping stent, delayed embolization due to an in-stent thrombus occurred 9 months after the procedure. CONCLUSIONS OCT during CAS using closed cell stent for unstable plaques frequently revealed tissue prolapse between struts. Placement of overlapping stents significantly reduced tissue prolapse, particularly tissue prolapse >500 µm. However, closed cell stents used for unstable plaques may not solve the problem of tissue prolapse.
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Affiliation(s)
- Kei Harada
- Department of Neuro-Vascular Surgery, Fukuoka Wajiro Hospital, Fukuoka, Japan
| | - Shogo Oshikata
- Department of Neuro-Vascular Surgery, Fukuoka Wajiro Hospital, Fukuoka, Japan
| | - Masahito Kajihara
- Department of Neuro-Vascular Surgery, Fukuoka Wajiro Hospital, Fukuoka, Japan
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Keenan M, Tate TH, Kieu K, Black JF, Utzinger U, Barton JK. Design and characterization of a combined OCT and wide field imaging falloposcope for ovarian cancer detection. BIOMEDICAL OPTICS EXPRESS 2017; 8:124-136. [PMID: 28101406 PMCID: PMC5231286 DOI: 10.1364/boe.8.000124] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 12/02/2016] [Accepted: 12/05/2016] [Indexed: 05/02/2023]
Abstract
Early detection of ovarian cancer is only achieved in around 20% of women due to lack of effective screening. We propose a method for surveillance of high risk women based on a microendoscope introduced transvaginally to image the fallopian tubes and ovaries. This requires extreme miniaturization of the optics and catheter sheath. We describe the design of a falloposcope that combines optical coherence tomography (OCT) and wide field imaging into a sub-1 mm diameter package. We characterize the systems and show that they provide contrast on ex-vivo samples of ovary and fallopian tube. In addition, we show the mechanical performance of the endoscope in an anatomically correct model of the female reproductive tract.
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Affiliation(s)
- Molly Keenan
- University of Arizona, Biomedical Engineering, 1127 James E Rogers Way, Tucson, AZ 85721, USA
| | - Tyler H. Tate
- University of Arizona, College of Optical Sciences, 1630 East University Blvd., Tucson, AZ 85721, USA
| | - Khanh Kieu
- University of Arizona, College of Optical Sciences, 1630 East University Blvd., Tucson, AZ 85721, USA
| | - John F. Black
- Glannaventa Inc., 2276 Allegheny Way, San Mateo, CA 94402, USA
| | - Urs Utzinger
- University of Arizona, Biomedical Engineering, 1127 James E Rogers Way, Tucson, AZ 85721, USA
- University of Arizona, College of Optical Sciences, 1630 East University Blvd., Tucson, AZ 85721, USA
| | - Jennifer K. Barton
- University of Arizona, Biomedical Engineering, 1127 James E Rogers Way, Tucson, AZ 85721, USA
- University of Arizona, College of Optical Sciences, 1630 East University Blvd., Tucson, AZ 85721, USA
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de Donato G, Setacci C, Umemoto T, Reimers B. Commentary: Inside of the Interaction Between the Plaque and the Stent: Optical Coherence Tomography During Carotid Artery Stenting. J Endovasc Ther 2016; 22:950-1. [PMID: 26586654 DOI: 10.1177/1526602815611885] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Gianmarco de Donato
- Division of Vascular Surgery, Department of Medicine, Surgery and Neuroscience, University of Siena, Italy
| | - Carlo Setacci
- Division of Vascular Surgery, Department of Medicine, Surgery and Neuroscience, University of Siena, Italy
| | | | - Bernhard Reimers
- Division of Cardiology, Humanitas Clinical and Research Center, Rozzano, Italy
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Nerla R, Castriota F, Micari A, Sbarzaglia P, Secco GG, Ruffino MA, de Donato G, Setacci C, Cremonesi A. Carotid artery stenting with a new-generation double-mesh stent in three high-volume Italian centres: clinical results of a multidisciplinary approach. EUROINTERVENTION 2016; 12:e677-83. [PMID: 27497367 DOI: 10.4244/eijv12i5a109] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
AIMS Carotid artery stenting (CAS) is still associated with higher periprocedural cerebrovascular events (CEs) compared to vascular surgery. The Roadsaver carotid artery stent is a double layer micromesh stent which reduces plaque prolapse and embolisation by improving plaque coverage. Its clinical impact on neurological outcome was unknown. The aim of this study was therefore to report the clinical results of a large real-world population from three different centres receiving a Roadsaver stent to treat carotid artery disease. METHODS AND RESULTS One hundred and fifty (150) patients (age 74±8 yrs, 75% male, symptomatic 29%) treated with CAS using the Roadsaver carotid stent in three high-volume Italian centres were included in the study. Intraprocedural optical coherence tomography (OCT) evaluation was performed in 26 patients, with an off-line analysis by a dedicated core laboratory. All patients underwent duplex ultrasound and neurological evaluation at 24 hours and at 30 days. CAS was technically successful in all cases (stent diameter: 8.6±0.8 mm, stent length: 25.0±4.5 mm). No in-hospital or 30-day CEs were observed. OCT evaluation detected a low rate of plaque prolapse (two patients, 7.7%). Duplex ultrasound showed stent and external carotid artery patency in all cases both before discharge and at 30-day follow-up. CONCLUSIONS The Roadsaver stent is a safe and promising technology for CAS, with a low percentage of plaque prolapse and good short-term clinical outcome. Larger studies with longer follow-up are necessary to confirm this favourable clinical outcome.
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Affiliation(s)
- Roberto Nerla
- Interventional Cardiology Unit, Maria Cecilia Hospital, Cotignola, Italy
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Stabile E, Tesorio T, Esposito G. The modern approach to endovascular carotid revascularisation. EUROINTERVENTION 2016; 12:e538-40. [DOI: 10.4244/eijv12i5a92] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Stabile E, Giugliano G, Cremonesi A, Bosiers M, Reimers B, Setacci C, Cao P, Schmidt A, Sievert H, Peeters P, Nikas D, Sannino A, de Donato G, Parlani G, Castriota F, Hornung M, Rubino P, Esposito G, Tesorio T. Impact on outcome of different types of carotid stent: results from the European Registry of Carotid Artery Stenting. EUROINTERVENTION 2016; 12:e265-70. [DOI: 10.4244/eijv12i2a41] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Eugenio Stabile
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
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Secco GG, Cremonesi A, Amor M, Pistis G, Reimers B, Castriota F. Optical coherence tomography during carotid artery stenting: A new niche application? Int J Cardiol 2015; 187:372-3. [PMID: 25841129 DOI: 10.1016/j.ijcard.2015.03.237] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Accepted: 03/17/2015] [Indexed: 11/15/2022]
Affiliation(s)
- Gioel Gabrio Secco
- Division of Cardiology, "Santi Antonio e Biagio e Cesare Arrigo" Hospital, Alessandria, Italy.
| | | | - Max Amor
- Interventional Cardiology, Polyclinique Louis Pasteur, Essey-les-Nancy, France
| | - Gianfranco Pistis
- Division of Cardiology, "Santi Antonio e Biagio e Cesare Arrigo" Hospital, Alessandria, Italy
| | | | - Fausto Castriota
- Interventional Cardiology, Polyclinique Louis Pasteur, Essey-les-Nancy, France
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Gurjarpadhye AA, DeWitt MR, Xu Y, Wang G, Rylander MN, Rylander CG. Dynamic Assessment of the Endothelialization of Tissue-Engineered Blood Vessels Using an Optical Coherence Tomography Catheter-Based Fluorescence Imaging System. Tissue Eng Part C Methods 2015; 21:758-66. [PMID: 25539889 DOI: 10.1089/ten.tec.2014.0345] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Lumen endothelialization of bioengineered vascular scaffolds is essential to maintain small-diameter graft patency and prevent thrombosis postimplantation. Unfortunately, nondestructive imaging methods to visualize this dynamic process are lacking, thus slowing development and clinical translation of these potential tissue-engineering approaches. To meet this need, a fluorescence imaging system utilizing a commercial optical coherence tomography (OCT) catheter was designed to visualize graft endothelialization. METHODS C7 DragonFly™ intravascular OCT catheter was used as a channel for delivery and collection of excitation and emission spectra. Poly-dl-lactide (PDLLA) electrospun scaffolds were seeded with endothelial cells (ECs). Seeded cells were exposed to Calcein AM before imaging, causing the living cells to emit green fluorescence in response to blue laser. By positioning the catheter tip precisely over a specimen using high-fidelity electromechanical components, small regions of the specimen were excited selectively. The resulting fluorescence intensities were mapped on a two-dimensional digital grid to generate spatial distribution of fluorophores at single-cell-level resolution. Fluorescence imaging of endothelialization on glass and PDLLA scaffolds was performed using the OCT catheter-based imaging system as well as with a commercial fluorescence microscope. Cell coverage area was calculated for both image sets for quantitative comparison of imaging techniques. Tubular PDLLA scaffolds were maintained in a bioreactor on seeding with ECs, and endothelialization was monitored over 5 days using the OCT catheter-based imaging system. RESULTS No significant difference was observed in images obtained using our imaging system to those acquired with the fluorescence microscope. Cell area coverage calculated using the images yielded similar values. Nondestructive imaging of endothelialization on tubular scaffolds showed cell proliferation with cell coverage area increasing from 15 ± 4% to 89 ± 6% over 5 days. CONCLUSION In this study, we showed the capability of an OCT catheter-based imaging system to obtain single-cell resolution and to quantify endothelialization in tubular electrospun scaffolds. We also compared the resulting images with traditional microscopy, showing high fidelity in image capability. This imaging system, used in conjunction with OCT, could potentially be a powerful tool for in vitro optimization of scaffold cellularization, ensuring long-term graft patency postimplantation.
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Affiliation(s)
- Abhijit Achyut Gurjarpadhye
- 1 School of Biomedical Engineering and Sciences, Virginia Polytechnic Institute and State University , Blacksburg, Virginia
| | - Matthew R DeWitt
- 1 School of Biomedical Engineering and Sciences, Virginia Polytechnic Institute and State University , Blacksburg, Virginia
| | - Yong Xu
- 2 Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University , Blacksburg, Virginia
| | - Ge Wang
- 3 Biomedical Imaging Cluster, Rensselaer Polytechnic Institute , Troy, New York
| | | | - Christopher G Rylander
- 4 Department of Mechanical Engineering, The University of Texas at Austin , Austin, Texas
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Xu G, Zhu J, Liu X. Stratifying carotid diseases for endovascular treatments. INTERVENTIONAL NEUROLOGY 2014; 1:16-21. [PMID: 25187762 DOI: 10.1159/000338358] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Endovascular angioplasty and stenting (CAS) has evolved as an alternative for treating occlusive carotid diseases in recent years. Carotid diseases are characterized by manifold etiologies and miscellaneous clinical manifestations. Although CAS is efficacious in treating patients with occlusive carotid diseases as a whole, the long-term risk-benefit ratio may vary in individual patients. Interventional strategies, such as angioplasty and stenting, should be individualized based on the etiology and clinical profiles to maximize the benefits and minimize the hazards of treatment. Based on recent publications, this review proposes a stratified treatment strategy for occlusive carotid diseases.
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Affiliation(s)
- Gelin Xu
- Department of Neurology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Juehua Zhu
- Department of Neurology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Xinfeng Liu
- Department of Neurology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
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Intravascular Frequency-Domain Optical Coherence Tomography Assessment of Carotid Artery Disease in Symptomatic and Asymptomatic Patients. JACC Cardiovasc Interv 2014; 7:674-84. [DOI: 10.1016/j.jcin.2014.01.163] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 01/09/2014] [Accepted: 01/16/2014] [Indexed: 11/18/2022]
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Iancu A, Lazăr A, Ober C. The story of inadvertent stent removal: further to "Re: 'Midterm results of a sirolimus-eluting stent implanted for recurrent carotid in-stent restenosis'". J Endovasc Ther 2013; 20:582-4. [PMID: 23914873 DOI: 10.1583/13-4296l.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Given CA, Attizzani GF, Jones MR, Ramsey CN, Brooks WH, Costa MA, Bezerra HG. Frequency-domain optical coherence tomography assessment of human carotid atherosclerosis using saline flush for blood clearance without balloon occlusion. AJNR Am J Neuroradiol 2013; 34:1414-8. [PMID: 23391841 DOI: 10.3174/ajnr.a3411] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
FD-OCT is a new imaging technique that allows unprecedented in vivo microlevel assessment of human carotid plaque morphologic patterns and stent-vessel interactions. Prior reports describing the use of this technique have used balloon occlusion of the target vessel or iodinated contrast media to facilitate imaging. We report, for the first time, in vivo FD-OCT imaging of human carotid arteries without the use of iodinated contrast material or balloon occlusion techniques.
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Affiliation(s)
- C A Given
- Central Baptist Hospital, Baptist Heart and Vascular Institute, Lexington, KY, USA.
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de Donato G, Setacci C. New frontiers in the feasibility of optical coherence tomography in carotid arteries. AJNR Am J Neuroradiol 2013; 34:1419-20. [PMID: 23413248 DOI: 10.3174/ajnr.a3445] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- G de Donato
- Department of Surgery, Vascular and Endovascular Surgery Unit, University of Siena, Siena, Italy
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Yu Y, Gray B, Lowe H, Halmagyi GM, Ng M. Dual modality intravascular imaging of unstable, symptomatic but “hemodynamically insignificant” carotid stenosis. J Neurol 2013; 260:1934-5. [DOI: 10.1007/s00415-013-6981-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 05/23/2013] [Accepted: 05/25/2013] [Indexed: 10/26/2022]
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de Donato G, Setacci F, Sirignano P, Galzerano G, Cappelli A, Setacci C. Optical Coherence Tomography after Carotid Stenting: Rate of Stent Malapposition, Plaque Prolapse and Fibrous Cap Rupture According to Stent Design. Eur J Vasc Endovasc Surg 2013; 45:579-87. [PMID: 23582886 DOI: 10.1016/j.ejvs.2013.03.005] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Accepted: 03/07/2013] [Indexed: 11/18/2022]
Affiliation(s)
- G de Donato
- Department of Surgery, Vascular and Endovascular Surgery Unit, University of Siena, Siena, Italy.
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Computer Simulations in Stroke Prevention: Design Tools and Virtual Strategies Towards Procedure Planning. Cardiovasc Eng Technol 2013. [DOI: 10.1007/s13239-013-0134-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Setacci C, de Donato G, Setacci F, Galzerano G, Sirignano P, Cappelli A, Palasciano G. Safety and feasibility of intravascular optical coherence tomography using a nonocclusive technique to evaluate carotid plaques before and after stent deployment. J Endovasc Ther 2012; 19:303-11. [PMID: 22788878 DOI: 10.1583/12-3871r.1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
PURPOSE To evaluate the safety and feasibility of optical coherence tomography (OCT) in patients with carotid stenosis undergoing carotid artery stenting (CAS). METHODS In a prospective study, 25 consecutive patients (15 men; mean age 74±4 years) undergoing protected CAS were enrolled and underwent high-definition (homoaxial resolution 10 µm) OCT image acquisition before stent deployment, immediately after stent placement, and following postdilation of the stent (3 scans/patient). Pullbacks were started during a nonocclusive flush, mechanically injecting 24 mL of 50% diluted contrast at 6 mL/s to displace blood from the artery. Two independent physicians judged the quality of images on a predefined 1-10 scale. The proportions of specific agreement and kappa values (κ) were calculated. RESULTS No procedural or in-hospital neurological complications occurred (any stroke/death 0%). The technical success of OCT pullbacks was 97.3% (73/75). The total amount of contrast was 86±18 mL/patient. No significant alteration in glomerular filtration rate or any other significant adverse event occurred. The images obtained were of high quality (mean value 8.1 out of 10), with good inter- and intraobserver agreement (κ = 0.81-0.87 and κ = 0.95, respectively). OCT images revealed innovative features such as rupture of the fibrous cap, plaque prolapse, and stent malapposition in a high percentage of the patients (range 24%-100%). CONCLUSION Intravascular OCT during a nonocclusive flush appears to be feasible and safe in carotid arteries. Since some original and unexpected information after CAS has been made available for the first time at such a high definition, future studies with OCT should focus on the interaction between carotid plaque and stent design, which might revolutionize our understanding of the mechanisms of carotid stenting, as well as influence our clinical policies.
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Affiliation(s)
- Carlo Setacci
- Department of Surgery, Vascular and Endovascular Surgery Unit, University of Siena, Italy
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Jones MR, Attizzani GF, Given CA, Brooks WH, Costa MA, Bezerra HG. Intravascular frequency-domain optical coherence tomography assessment of atherosclerosis and stent-vessel interactions in human carotid arteries. AJNR Am J Neuroradiol 2012; 33:1494-501. [PMID: 22422179 PMCID: PMC7966556 DOI: 10.3174/ajnr.a3016] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Accepted: 12/07/2011] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Carotid artery-related stroke is largely an embolic disease that has been correlated with inflammation, plaque rupture, and thrombus formation in "vulnerable" atherosclerotic plaque. Nevertheless, current guidelines for carotid revascularization in asymptomatic patients rely on the calculation of stenosis for risk assessment, a parameter that has been viewed with increasing skepticism. Intravascular OCT is an imaging technique that offers high axial resolution (10 μm), allowing an unprecedented micron-level assessment of human carotid plaque morphology. This observational article reports the first successful use of the newest iteration of this technology, FDOCT without balloon occlusion to assess human carotid artery disease and carotid stent-vessel interaction in vivo. MATERIALS AND METHODS Four patients with asymptomatic carotid artery disease and ambiguous noninvasive and/or angiographic data underwent carotid FDOCT to assess risk and to formulate a treatment strategy. RESULTS Findings include the unexpected demonstration of TCFAs, plaque rupture, thrombus, inflammation, and marked tissue prolapse through stent struts in patients without high-risk factors by conventional criteria, as well as low-risk features in a patient with a high-risk noninvasive study. The procedures were performed without safety issues or special accommodations for vessel occlusion. CONCLUSIONS The present study demonstrates the technical feasibility of FDOCT in cervical carotid arteries. As such, this technology holds the promise of not only clarifying ambiguous data in individual patients but of providing data that might call for a future paradigm shift in the assessment of asymptomatic carotid artery disease.
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Affiliation(s)
- M R Jones
- Baptist Heart and Vascular Institute, Central Baptist Hospital, Lexington, KY, USA.
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Reimers B, Nikas D, Versaci F. Commentary: optical coherence tomography: a valuable tool to improve carotid artery stenting. J Endovasc Ther 2012; 19:312-3. [PMID: 22788879 DOI: 10.1583/12-3871c1.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Cheng KHY, Sun C, Cruz JP, Marotta TR, Spears J, Montanera WJ, Thind A, Courtney B, Standish BA, Yang VXD. Comprehensive data visualization for high resolution endovascular carotid arterial wall imaging. JOURNAL OF BIOMEDICAL OPTICS 2012; 17:056003. [PMID: 22612126 DOI: 10.1117/1.jbo.17.5.056003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Carotid angioplasty and stenting is a minimally invasive endovascular procedure that may benefit from in vivo high resolution imaging for monitoring the physical placement of the stent and potential complications. The purpose of this pilot study was to evaluate the ability of optical coherence tomography to construct high resolution 2D and 3D images of stenting in porcine carotid artery. Four Yorkshire pigs were anaesthetized and catheterized. A state-of-the-art optical coherence tomography (OCT) system and an automated injector were used to obtain both healthy and stented porcine carotid artery images. Data obtained were then processed for visualization. The state-of-the-art OCT system was able to capture high resolution images of both healthy and stented carotid arteries. High quality 3D images of healthy and stented carotid arteries were constructed, clearly depicting vessel wall morphological features, stent apposition and thrombus formation over the inserted stent. The results demonstrate that OCT can be used to generate high quality 3D images of carotid arterial stents for accurate diagnosis of stent apposition and complications under appropriate imaging conditions.
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Affiliation(s)
- Kyle H Y Cheng
- Biophotonics and Bioengineering Laboratory, 350 Victoria Street, Toronto, Ontario M5B 2K3, Canada
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Kaňovský J, Boček O, Červinka P, Ondrúš T, Kala P. Optical coherence tomography in interventional cardiology - research field or future daily routine? COR ET VASA 2012. [DOI: 10.1016/j.crvasa.2012.05.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Cheng KHY, Sun C, Vuong B, Lee KKC, Mariampillai A, Marotta TR, Spears J, Montanera WJ, Herman PR, Kiehl TR, Standish BA, Yang VXD. Endovascular optical coherence tomography intensity kurtosis: visualization of vasa vasorum in porcine carotid artery. BIOMEDICAL OPTICS EXPRESS 2012; 3:388-99. [PMID: 22435088 PMCID: PMC3296528 DOI: 10.1364/boe.3.000388] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Revised: 01/24/2012] [Accepted: 01/24/2012] [Indexed: 05/15/2023]
Abstract
Application of speckle variance optical coherence tomography (OCT) to endovascular imaging faces difficulty of extensive motion artifacts inherently associated with arterial pulsations in addition to other physiological movements. In this study, we employed a technique involving a fourth order statistical method, kurtosis, operating on the endovascular OCT intensity images to visualize the vasa vasorum of carotid artery in vivo and identify its flow dynamic in a porcine model. The intensity kurtosis technique can distinguish vasa vasorum from the surrounding tissues in the presence of extensive time varying noises and dynamic motions of the arterial wall. Imaging of vasa vasorum and its proliferation, may compliment the growing knowledge of structural endovascular OCT in assessment and treatment of atherosclerosis in coronary and carotid arteries.
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Affiliation(s)
- Kyle H. Y. Cheng
- Biophotonics and Bioengineering Laboratory, Ryerson University, Toronto, Ontario, Canada
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Cuiru Sun
- Biophotonics and Bioengineering Laboratory, Ryerson University, Toronto, Ontario, Canada
- Department of Electrical and Computer Engineering, Ryerson University, Toronto, Ontario, Canada
| | - Barry Vuong
- Biophotonics and Bioengineering Laboratory, Ryerson University, Toronto, Ontario, Canada
- Department of Electrical and Computer Engineering, Ryerson University, Toronto, Ontario, Canada
| | - Kenneth K. C. Lee
- Biophotonics and Bioengineering Laboratory, Ryerson University, Toronto, Ontario, Canada
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Adrian Mariampillai
- Biophotonics and Bioengineering Laboratory, Ryerson University, Toronto, Ontario, Canada
- Department of Electrical and Computer Engineering, Ryerson University, Toronto, Ontario, Canada
| | - Thomas R. Marotta
- Department of Medical Imaging, St. Michael’s Hospital, Toronto, Ontario, Canada
| | - Julian Spears
- Department of Medical Imaging, St. Michael’s Hospital, Toronto, Ontario, Canada
- Department of Pathology, University of Toronto, Toronto, Ontario, Canada
| | - Walter J. Montanera
- Department of Medical Imaging, St. Michael’s Hospital, Toronto, Ontario, Canada
| | - Peter. R. Herman
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Tim-Rasmus Kiehl
- Department of Pathology, University of Toronto, Toronto, Ontario, Canada
| | - Beau A. Standish
- Biophotonics and Bioengineering Laboratory, Ryerson University, Toronto, Ontario, Canada
- Department of Electrical and Computer Engineering, Ryerson University, Toronto, Ontario, Canada
| | - Victor X. D. Yang
- Biophotonics and Bioengineering Laboratory, Ryerson University, Toronto, Ontario, Canada
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
- Department of Electrical and Computer Engineering, Ryerson University, Toronto, Ontario, Canada
- Department of Medical Imaging, St. Michael’s Hospital, Toronto, Ontario, Canada
- Division of Neurosurgery, St. Michael’s Hospital, Toronto, Ontario, Canada
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Sarantopoulos A, Beziere N, Ntziachristos V. Optical and Opto-Acoustic Interventional Imaging. Ann Biomed Eng 2012; 40:346-66. [DOI: 10.1007/s10439-011-0501-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2011] [Accepted: 12/23/2011] [Indexed: 12/20/2022]
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Possibilities of optical coherence tomography in assessment of stent healing. COR ET VASA 2011. [DOI: 10.33678/cor.2011.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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