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  1 / 91 MEDLINE  
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[PMID]:25570003
[Au] Autor:Parrini S; Cutolo F; Freschi C; Ferrari M; Ferrari V
[Ti] Título:Augmented reality system for freehand guide of magnetic endovascular devices.
[So] Source:Conf Proc IEEE Eng Med Biol Soc;2014:490-3, 2014.
[Is] ISSN:1557-170X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Magnetic guide of endovascular devices or magnetized therapeutic microparticles to the specific target in the arterial tree is increasingly studied, since it could improve treatment efficacy and reduce side effects. Most proposed systems use external permanent magnets attached to robotic manipulators or magnetic resonance imaging (MRI) systems to guide internal carriers to the region of treatment. We aim to simplify this type of procedures, avoiding or reducing the need of robotic arms and MRI systems in the surgical scenario. On account of this we investigated the use of a wearable stereoscopic video see-through augmented reality system to show the hidden vessel to the surgeon; in this way, the surgeon is able to freely move the external magnet, following the showed path, to lead the endovascular magnetic device towards the desired position. In this preliminary study, we investigated the feasibility of such an approach trying to guide a magnetic capsule inside a vascular mannequin. The high rate of success and the positive evaluation provided by the operators represent a good starting point for further developments of the system.
[Mh] Termos MeSH primário: Angioscópios
Vasos Sanguíneos
Imãs
Robótica/métodos
Cirurgia Vídeoassistida/métodos
[Mh] Termos MeSH secundário: Seres Humanos
Robótica/instrumentação
Cirurgia Vídeoassistida/instrumentação
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1606
[Cu] Atualização por classe:150109
[Lr] Data última revisão:
150109
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150109
[St] Status:MEDLINE
[do] DOI:10.1109/EMBC.2014.6943635


  2 / 91 MEDLINE  
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[PMID]:23684508
[Au] Autor:Robert E; Facca S; Atik T; Bodin F; Bruant-Rodier C; Liverneaux P
[Ad] Endereço:Department of Hand Surgery, CCOM, Strasbourg University Hospitals, 10, avenue Baumann, 67403 Illkirch cedex, France.
[Ti] Título:Vascular microanastomosis through an endoscopic approach: feasibility study on two cadaver forearms.
[So] Source:Chir Main;32(3):136-40, 2013 Jun.
[Is] ISSN:1769-6666
[Cp] País de publicação:France
[La] Idioma:eng
[Ab] Resumo:The size of the incisions for free muscle flaps is often very large, and a source of deep adhesions and unaesthetic scars. But it is justified by performing the microsurgical step comfortably. In the hopes of shortening the size of incisions, the goal of this work was to study the feasibility of vascular microanastomoses through an endoscopic approach. The material consisted of two cadavers, a telemanipulator, and a vascular clamp. The antebrachial skin was detached then distended by gas insufflation. Four incisions, 1cm each, allowed the insertion of four trocarts connected to the telemanipulator. The artery was dissected (radial or ulnar) and the vascular clamp was introduced under the skin through one of the trocarts, and then installed on the dissected artery. The vascular anastomosis was performed with the use of a 10/0 nylon suture. The anastomosis lasted 2 hours under insufflation without any leak. The two arteries were identified then dissected without difficulty. The anastomosis was performed in good conditions. The assembling and disassembling of the clamp were time consuming. The main difficulties were caused by a long suture and a very fragile needle. Our results demonstrate the feasibility of vascular microanastomosis through an endoscopic approach. The next step is to perform the first clinical case for example on a latissimus dorsi free muscle flap.
[Mh] Termos MeSH primário: Anastomose Cirúrgica/métodos
Angioscopia/métodos
Antebraço/irrigação sanguínea
Procedimentos Cirúrgicos Reconstrutivos/métodos
[Mh] Termos MeSH secundário: Anastomose Cirúrgica/instrumentação
Angioscópios
Angioscopia/instrumentação
Cadáver
Estudos de Viabilidade
Seres Humanos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1403
[Cu] Atualização por classe:130621
[Lr] Data última revisão:
130621
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:130521
[St] Status:MEDLINE


  3 / 91 MEDLINE  
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[PMID]:23078862
[Au] Autor:Dai K; Ishihara M; Inoue I; Kawagoe T; Shimatani Y; Miura F; Nakama Y; Otani T; Ooi K; Ikenaga H; Nakamura M; Miki T; Kishimoto S; Sumimoto Y
[Ad] Endereço:Department of Cardiology, Hiroshima City Hospital, Hiroshima, Japan.
[Ti] Título:Coronary angioscopic findings 9 months after everolimus-eluting stent implantation compared with sirolimus-eluting stents.
[So] Source:J Cardiol;61(1):22-30, 2013 Jan.
[Is] ISSN:1876-4738
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:OBJECTIVES: We assessed angioscopic findings after everolimus-eluting stents (EES) implantation, compared with sirolimus-eluting stents (SES). BACKGROUND: Coronary angioscopy (CAS) provides an opportunity to assess neointimal coverage over stent struts, thrombus, and plaque color by direct visualization. CAS is a useful tool for evaluating stent struts after drug-eluting stent implantation. Angioscopic findings after EES implantation have not been reported before. METHODS: We performed CAS in 23 patients who were treated with EES and 41 patients with SES. CAS was performed 8.5 months after stent implantation. We assessed neointimal coverage, thrombus, and plaque color. We classified neointimal coverage in 4 grades: grade 0=struts were completely exposed; grade 1=struts were visible with dull light reflexion; grade 2=there was no light reflexion from slightly visible struts; grade 3=struts were completely covered. RESULTS: There was no significant difference in minimum, maximum, dominant grade of neointimal coverage, and heterogeneity index between EES and SES. Thrombus was less frequently observed in EES than SES (4% vs 29%, p=0.02). When we divided study patients into acute coronary syndrome (ACS) or stable angina pectoris (SAP), there was a tendency toward less thrombus in EES than SES, in both ACS and SAP. Maximum color grade of the plaques was less advanced in EES than SES (p<0.01). Yellow plaques of grade 2 or 3 were less frequent in EES than SES (35% vs 76%, p<0.01). CONCLUSIONS: This study suggested that EES were associated with lower risk of thrombus formation than SES.
[Mh] Termos MeSH primário: Angioscópios
Doença da Artéria Coronariana/patologia
Doença da Artéria Coronariana/terapia
Vasos Coronários/patologia
Stents Farmacológicos
Sirolimo/análogos & derivados
Sirolimo/uso terapêutico
[Mh] Termos MeSH secundário: Idoso
Angioplastia Coronária com Balão
Trombose Coronária/etiologia
Trombose Coronária/prevenção & controle
Stents Farmacológicos/efeitos adversos
Everolimo
Feminino
Seres Humanos
Masculino
Meia-Idade
Intervenção Coronária Percutânea
Fatores de Tempo
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
9HW64Q8G6G (Everolimus); W36ZG6FT64 (Sirolimus)
[Em] Mês de entrada:1304
[Cu] Atualização por classe:151119
[Lr] Data última revisão:
151119
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:121020
[St] Status:MEDLINE


  4 / 91 MEDLINE  
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[PMID]:22868462
[Au] Autor:Kosaka Y; Sakamoto T; Fuchigami T; Tabata Y; Takigiku K; Yasukouchi S; Harada Y
[Ad] Endereço:Department of Cardiovascular Surgery, Nagano Children's Hospital, Azumino, Japan.
[Ti] Título:[Successful application of cholangioscope as an intravascular endoscope in hybrid operation for a child].
[So] Source:Kyobu Geka;65(9):785-9, 2012 Aug.
[Is] ISSN:0021-5252
[Cp] País de publicação:Japan
[La] Idioma:jpn
[Ab] Resumo:We performed hybrid operation on a 3-year-old boy with thrombosis in the pulmonary arterial conduit which had been implanted concomitantly at the time of Fontan operation. We used a cholangioscope as a substitute of intravascular endoscope. It visualized the organized thrombus and the suture line in the conduit. Hybrid operation was successfully performed based on the detailed findings gained by cholangioscopy.
[Mh] Termos MeSH primário: Angioscópios
Endoscopia do Sistema Digestório/instrumentação
Artéria Pulmonar
Trombose/cirurgia
[Mh] Termos MeSH secundário: Ductos Biliares
Pré-Escolar
Técnica de Fontan
Seres Humanos
Masculino
Complicações Pós-Operatórias
[Pt] Tipo de publicação:CASE REPORTS; ENGLISH ABSTRACT; JOURNAL ARTICLE
[Em] Mês de entrada:1211
[Cu] Atualização por classe:120807
[Lr] Data última revisão:
120807
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:120808
[St] Status:MEDLINE


  5 / 91 MEDLINE  
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[PMID]:21071005
[Au] Autor:Lederman RJ; Faranesh AZ
[Ti] Título:Getting closer for high-resolution vascular MRI.
[So] Source:JACC Cardiovasc Imaging;3(11):1166-7, 2010 Nov.
[Is] ISSN:1876-7591
[Cp] País de publicação:United States
[La] Idioma:eng
[Mh] Termos MeSH primário: Angioscopia
Aterosclerose/diagnóstico
Angiografia por Ressonância Magnética
Imagem por Ressonância Magnética Intervencionista
[Mh] Termos MeSH secundário: Angioscópios
Angioscopia/instrumentação
Animais
Desenho de Equipamento
Seres Humanos
Angiografia por Ressonância Magnética/instrumentação
Imagem por Ressonância Magnética Intervencionista/instrumentação
Valor Preditivo dos Testes
[Pt] Tipo de publicação:COMMENT; EDITORIAL; RESEARCH SUPPORT, N.I.H., INTRAMURAL
[Em] Mês de entrada:1102
[Cu] Atualização por classe:160518
[Lr] Data última revisão:
160518
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:101113
[St] Status:MEDLINE
[do] DOI:10.1016/j.jcmg.2010.09.007


  6 / 91 MEDLINE  
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[PMID]:21071004
[Au] Autor:Sathyanarayana S; Schär M; Kraitchman DL; Bottomley PA
[Ad] Endereço:Division of MR Research, Department of Radiology, Johns Hopkins University, Baltimore, Maryland, USA.
[Ti] Título:Towards real-time intravascular endoscopic magnetic resonance imaging.
[So] Source:JACC Cardiovasc Imaging;3(11):1158-65, 2010 Nov.
[Is] ISSN:1876-7591
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Fast, minimally invasive, high-resolution intravascular imaging is essential for identifying vascular pathological features and for developing novel diagnostic tools and treatments. Intravascular magnetic resonance imaging (MRI) with active internal probes offers high sensitivity to pathological features without ionizing radiation or the limited luminal views of conventional X-rays, but has been unable to provide a high-speed, high-resolution, endoscopic view. Herein, real-time MRI endoscopy is introduced for performing MRI from a viewpoint intrinsically locked to a miniature active, internal transmitter-receiver in a clinical 3.0-T MRI scanner. Real-time MRI endoscopy at up to 2 frames/s depicts vascular wall morphological features, atherosclerosis, and calcification at 80 to 300 µm resolution during probe advancement through diseased human iliac artery specimens and atherosclerotic rabbit aortas in vivo. MRI endoscopy offers the potential for fast, minimally invasive, transluminal, high-resolution imaging of vascular disease on a common clinical platform suitable for evaluating and targeting atherosclerosis in both experimental and clinical settings.
[Mh] Termos MeSH primário: Angioscopia
Aterosclerose/diagnóstico
Angiografia por Ressonância Magnética
Imagem por Ressonância Magnética Intervencionista
[Mh] Termos MeSH secundário: Angioscópios
Angioscopia/instrumentação
Animais
Desenho de Equipamento
Seres Humanos
Angiografia por Ressonância Magnética/instrumentação
Imagem por Ressonância Magnética Intervencionista/instrumentação
Valor Preditivo dos Testes
Coelhos
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, N.I.H., EXTRAMURAL
[Em] Mês de entrada:1102
[Cu] Atualização por classe:161019
[Lr] Data última revisão:
161019
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:101113
[St] Status:MEDLINE
[do] DOI:10.1016/j.jcmg.2010.08.014


  7 / 91 MEDLINE  
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[PMID]:20496135
[Au] Autor:Komai H; Juri M
[Ad] Endereço:Department of Cardiovascular Surgery, Saiseikai Wakayama Hospital, Wakayama, Japan.
[Ti] Título:Deep venous external valvuloplasty using a rigid angioscope.
[So] Source:Surg Today;40(6):538-42, 2010 Jun.
[Is] ISSN:1436-2813
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:PURPOSE: The aim of this study was to evaluate the long-term results of deep venous valvuloplasty using a rigid metal angioscope. METHODS: Forty patients who underwent deep venous external valvuloplasty using a rigid metal angioscope for primary deep venous insufficiency were enrolled. The preoperative CEAP (Clinical/Etiology/Anatomy/Pathophysiology) classifications were class 2 in 13 patients, class 3 in 8 patients, class 4 in 12 patients, class 5 in 1 patient, and class 6 in 6 patients. In 9 legs in 6 patients, the valves were either destroyed or congenitally absent, and deep venous plication was applied instead. The long-term operative results were evaluated from clinical charts and direct telephone interviews. RESULTS: During a mean follow-up period of 5.0 years, we experienced no deep vein thromboses or other complications. In 39 of the 40 patients, the subjective symptoms improved. The improvement after successful valvuloplasty was 82% with respect to the CEAP classification. Among the 9 legs treated by deep venous plication alone, 5 had improved CEAP classifications, while 4 showed no change. CONCLUSIONS: Deep venous external valvuloplasty assisted by a rigid angioscope is a safe and effective method for severe valve insufficiency. Furthermore, the long-term results are positive. Deep venous plication may therefore represent an effective alternative for patients who cannot undergo valvuloplasty.
[Mh] Termos MeSH primário: Angioscópios
Angioscopia/métodos
Cateterismo/instrumentação
[Mh] Termos MeSH secundário: Cateterismo/métodos
Seguimentos
Seres Humanos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1101
[Cu] Atualização por classe:171011
[Lr] Data última revisão:
171011
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:100525
[St] Status:MEDLINE
[do] DOI:10.1007/s00595-009-4076-8


  8 / 91 MEDLINE  
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[PMID]:20379048
[Au] Autor:Uchida Y; Uchida Y; Kawai S; Kanamaru R; Kameda N
[Ad] Endereço:Japan Foundation for Cardiovascular Research, Funabashi, Chiba, Japan.
[Ti] Título:Imaging of lysophosphatidylcholine in human coronary plaques by color fluorescence angioscopy.
[So] Source:Int Heart J;51(2):129-33, 2010 Mar.
[Is] ISSN:1349-2365
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:Lysophosphatidylcholine (LPC) is a proinflammatory and proatherogenic substance, and it plays an important role in the initiation, progression, and destabilization of atherosclerotic plaques. If LPC in the vascular wall is visualized in vivo, the mechanisms of atherosclerosis and the effects of medical and interventional therapies on atherosclerosis can be objectively evaluated. Therefore, this study was carried out to visualize LPC in human coronary plaques using a color fluorescence angioscopy (CFA) system. (1) The fluorescence characteristics of LPC were investigated by color fluorescence microscopy (CFM) using Trypan blue dye (TB) as an indicator. For fluorescence imaging, a combination of a band-pass filter (345 nm) and a band-absorption filter of 420 nm (A imaging), or a combination of a band-pass filter (470 nm) and a band-absorption filter of 520 nm (B imaging) was employed. (2) The fluorescence of LPC in the excised human coronary plaques was investigated by CFA and CFM scanning using the same filters as those in CFM. In the presence of TB, LPC exhibited a red fluorescence in both A and B imaging. This red fluorescence color in both A and B imaging was not observed for the other known major substances that constitute the atherosclerotic plaques. This red fluorescence color in both A and B imaging was detected by CFA in both white and yellow plaques that were classified by conventional angioscopy. This fluorescence color was found to be distributed in a web-like or diffuse configuration by CFM scanning. LPC in the human coronary plaques was successfully visualized by CFA using TB as an indicator.
[Mh] Termos MeSH primário: Angioscópios
Angioscopia/métodos
Doença da Artéria Coronariana/metabolismo
Doença da Artéria Coronariana/patologia
Lisofosfatidilcolinas/metabolismo
Microscopia de Fluorescência
[Mh] Termos MeSH secundário: Idoso
Corantes
Feminino
Seres Humanos
Masculino
Meia-Idade
Técnicas de Cultura de Tecidos
Azul Tripano
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coloring Agents); 0 (Lysophosphatidylcholines); I2ZWO3LS3M (Trypan Blue)
[Em] Mês de entrada:1005
[Cu] Atualização por classe:151119
[Lr] Data última revisão:
151119
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:100410
[St] Status:MEDLINE


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[PMID]:20335043
[Au] Autor:Tsagakis K; Kamler M; Benedik J; Jakob H
[Ad] Endereço:Department of Thoracic and Cardiovascular Surgery, West German Heart Center, University Hospital Essen, Essen, Germany. konstantinos.tsagakis@uk-essen.de
[Ti] Título:Angioscopy--a valuable tool in guiding hybrid stent grafting and decision making during type A aortic dissection surgery.
[So] Source:Eur J Cardiothorac Surg;38(4):507-9, 2010 Oct.
[Is] ISSN:1873-734X
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:During hypothermic circulatory arrest (HCA), a briefly visible descending aorta is exposed, enabling direct vision to the surgeon. This study evaluated the impact of angioscopy on arch and descending aortic surgery for type A aortic dissection (AD). From December 2007 to March 2009, a flexible bronchovideoscope was used in 21 patients to assure true lumen (TL) positioning of the arterial cannula during open vision aortic cannulation (OVAC; nine of 21 cases) and to inspect the arch and descending aorta for re-entries, guide wire position and target zone for hybrid stent graft (SG) landing (20 of 21 cases). In OVAC, angioscopy secured positioning of the arterial cannula within the TL requiring additional 10-15s of cerebral ischaemia. In 10 of 21 cases, no additional re-entries were found, thus obviating arch replacement in 2 of 21 and stent grafting in 8 of 21. In 11 of 21 cases, SG deployment was guided to the target zone, in three cases incomplete unfolding initiated balloon dilatation. Angioscopy has become an indispensable tool for decision making in AD to apply OVAC, downstream stent grafting and landing zone control with the ability to indicate ballooning at neglectable time requirements during HCA.
[Mh] Termos MeSH primário: Aneurisma Dissecante/cirurgia
Angioscopia/métodos
Aneurisma da Aorta Torácica/cirurgia
Implante de Prótese Vascular/métodos
[Mh] Termos MeSH secundário: Doença Aguda
Adulto
Idoso
Angioscópios
Doença Crônica
Tomada de Decisões
Feminino
Parada Cardíaca
Seres Humanos
Cuidados Intraoperatórios/métodos
Masculino
Meia-Idade
Stents
[Pt] Tipo de publicação:EVALUATION STUDIES; JOURNAL ARTICLE
[Em] Mês de entrada:1105
[Cu] Atualização por classe:110830
[Lr] Data última revisão:
110830
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:100326
[St] Status:MEDLINE
[do] DOI:10.1016/j.ejcts.2010.02.010


  10 / 91 MEDLINE  
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[PMID]:19378751
[Au] Autor:Sathyanarayana S; Bottomley PA
[Ad] Endereço:Department of Radiology, Division of MR Research, Johns Hopkins University, Baltimore, Maryland 21287, USA.
[Ti] Título:MRI endoscopy using intrinsically localized probes.
[So] Source:Med Phys;36(3):908-19, 2009 Mar.
[Is] ISSN:0094-2405
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Magnetic resonance imaging (MRI) is traditionally performed with fixed externally applied gradient magnetic fields and is hence intrinsically locked to the laboratory frame of reference (FoR). Here a method for high-resolution MRI that employs active, catheter-based, tiny internal probes that utilize the spatial properties of the probe itself for localization is proposed and demonstrated at 3 T. Because these properties are intrinsic to the probe, they move with it, transforming MRI from the laboratory FoR to the FoR of the device itself, analogous to an endoscope. The "MRI endoscope" can utilize loop coils and loopless antennas with modified sensitivity, in combination with adiabatic excitation by the device itself, to restrict the MRI sensitivity to a disk-shaped plane a few mm thick. Excitation with the MRI endoscope limits the eddy currents induced in the sample to an excited volume whose size is orders of magnitude below that excited by a conventional body MRI coil. Heat testing shows maximum local temperature increases of <1 degrees C during MRI, within regulatory guidelines. The method is demonstrated in a kiwifruit, in intact porcine and rabbit aortas, and in an atherosclerotic human iliac artery specimen, with in-plane resolution as small as 80 microm and 1.5-5 mm slice thickness.
[Mh] Termos MeSH primário: Endoscópios
Endoscopia/métodos
Imagem por Ressonância Magnética Intervencionista/instrumentação
[Mh] Termos MeSH secundário: Actinidia/anatomia & histologia
Angioscópios
Angioscopia/métodos
Angioscopia/estatística & dados numéricos
Animais
Aorta/anatomia & histologia
Aterosclerose/patologia
Aterosclerose/terapia
Fenômenos Biofísicos
Endoscopia/estatística & dados numéricos
Desenho de Equipamento
Seres Humanos
Artéria Ilíaca/patologia
Técnicas In Vitro
Imagem por Ressonância Magnética Intervencionista/métodos
Imagem por Ressonância Magnética Intervencionista/estatística & dados numéricos
Coelhos
Suínos
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, N.I.H., EXTRAMURAL
[Em] Mês de entrada:0905
[Cu] Atualização por classe:170214
[Lr] Data última revisão:
170214
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:090422
[St] Status:MEDLINE



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