keyword
MENU ▼
Read by QxMD icon Read
search

Intravascular optical coherence tomography

keyword
https://www.readbyqxmd.com/read/28521331/retinal-deep-capillary-ischemia-associated-with-an-occluded-congenital-retinal-macrovessel
#1
Taiji Hasegawa, Nahoko Ogata
PURPOSE: To report the case of a patient with an occluded congenital retinal macrovessel accompanied by retinal deep capillary ischemia. METHODS: A 38-year-old woman presented with a 2-day history of a paracentral scotoma of her right eye. RESULTS: Fundus photograph showed a dilated congenital retinal macrovessel with arteriovenous anastomosis, an intravascular white region indicating the thrombus at arteriovenous anastomotic region, and an area of retinal whitening temporal to the fovea...
July 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28504218/first-in-human-evaluation-of-a-novel-poly-l-lactide-based-sirolimus-eluting-bioresorbable-vascular-scaffold-for-the-treatment-of-de-novo-native-coronary-artery-lesions-meres-1-trial
#2
Ashok Seth, Yoshinobu Onuma, Ricardo Costa, Praveen Chandra, Vinay K Bahl, Cholenahally N Manjunath, Ajaykumar U Mahajan, Viveka Kumar, Pravin K Goel, Gurpreet S Wander, Mathew S Kalarickal, Upendra Kaul, V K Ajit Kumar, Pratap C Rath, Vijay Trehan, Gunasekaran Sengottuvelu, Sundeep Mishra, Alexandre Abizaid, Patrick W Serruys
AIMS: The MeRes-1 trial sought to study the safety and effectiveness of a novel sirolimus-eluting bioresorbable vascular scaffold (MeRes100 BRS) in treating de novo native coronary artery lesions by clinical evaluation and using multiple imaging modalities. METHODS AND RESULTS: The MeRes-1 first-in-human trial was a single-arm, prospective, multicentre study, which enrolled 108 patients with de novo coronary artery lesions (116 scaffolds were deployed to treat 116 lesions in 108 patients)...
May 16, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28493084/combined-intracoronary-2d-3d-optical-coherence-tomography-and-intravascular-ultrasound-imaging-in-left-main-severe-stent-malapposition
#3
Enrico Cerrato, Corina Biagioni, Pilar Jimenez-Quevedo, Ivan J Nuñez-Gil, Nieves Gonzalo, Javier Escaned
No abstract text is available yet for this article.
May 10, 2017: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/28457813/high-definition-intravascular-ultrasound-vs-optical-coherence-tomography-preliminary-experience
#4
Marcos García-Guimaraes, Javier Cuesta, Fernando Rivero, Teresa Bastante, Amparo Benedicto, Fernando Alfonso
No abstract text is available yet for this article.
April 27, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28454794/reduced-duration-of-dual-antiplatelet-therapy-using-an-improved-drug-eluting-stent-for-percutaneous-coronary-intervention-of-the-left-main-artery-in-a-real-world-all-comer-population-rationale-and-study-design-of-the-prospective-randomized-multicenter-ideal
#5
Miguel E Lemmert, Keith Oldroyd, Paul Barragan, Maciej Lesiak, Robert A Byrne, Evgeny Merkulov, Joost Daemen, Yoshinobu Onuma, Karen Witberg, Robert-Jan van Geuns
BACKGROUND: Continuous improvements in stent technology make percutaneous coronary intervention (PCI) a potential alternative to surgery in selected patients with unprotected left main coronary artery (uLMCA) disease. The optimal duration of dual antiplatelet therapy (DAPT) in these patients remains undetermined, and in addition, new stent designs using a bioabsorbable polymer might allow shorter duration of DAPT. STUDY DESIGN: IDEAL-LM is a prospective, randomized, multicenter study that will enroll 818 patients undergoing uLMCA PCI...
May 2017: American Heart Journal
https://www.readbyqxmd.com/read/28449503/re-crossing-the-distal-cell-in-bifurcation-verified-by-using-an-enhanced-stent-visualization-system-and-optical-coherence-tomography-a-report-of-two-cases
#6
Ruofei Jia, Zening Jin, Hong Li, Jing Han
The coronary guidewire re-crossing position before the final kissing balloon post-dilation is important to reduce the incidence of incomplete stent apposition in bifurcation lesions. Angiography and intravascular ultrasonography are unreliable at detecting the site of wire re-crossing. The high resolution of optical coherence tomography (OCT) offers the advantage of precise assessment of construction in bifurcation. However, the OCT technique still has some limitations, including the requirement for additional contrast and expense...
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28389927/post-mortem-imaging-of-the-infant-and-perinatal-dura-mater-and-superior-sagittal-sinus-using-optical-coherence-tomography
#7
Emma C Cheshire, Roger D G Malcomson, Shiju Joseph, Asif Adnan, David Adlam, Guy N Rutty
Infants and young children are likely to present with subdural haemorrhage (SDH) if they are the victims of abusive head trauma. In these cases, the most accepted theory for the source of bleeding is the bridging veins traversing from the surface of the brain to the dura mater. However, some have suggested that SDH may result from leakage of blood from a dural vascular plexus. As post-mortem examination of the bridging veins and dura is challenging, and imaging modalities such as magnetic resonance and computed tomography do not have the resolution capabilities to image small blood vessels, we have trialled the use of intravascular and benchtop optical coherence tomography (OCT) systems for imaging from within the superior sagittal sinus (SSS) and through the dura during five infant/perinatal autopsies...
April 7, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28342663/intramural-coronary-hematoma-a-complex-three-dimensional-entity-multimodality-assessment
#8
Iván J Núñez-Gil, Mauro Echavarría-Pinto, Gisela Feltes, Antonio Fernández-Ortiz
A 62-year-old woman was admitted with chest pain of two hours' duration, ECG changes in the precordial leads and left ventricular ejection fraction of 30% on the echocardiogram. Emergent catheterization demonstrated severe flow disturbance in the left coronary artery. An intra-aortic balloon pump and a drug-eluting stent were implanted. However, the flow disturbance persisted. Optical coherence tomography followed by intravascular ultrasound provided crucial data on the mechanism and helped to optimize treatment in this critical patient...
April 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/28330670/layered-fibrotic-plaques-are-the-predominant-component-in-cardiac-allograft-vasculopathy-systematic-findings-and-risk-stratification-by-oct
#9
Tor Skibsted Clemmensen, Niels Ramsing Holm, Hans Eiskjær, Brian Bridal Løgstrup, Evald Høj Christiansen, Jouke Dijkstra, Trine Ørhøj Barkholt, Christian Juhl Terkelsen, Michael Maeng, Steen Hvitfeldt Poulsen
OBJECTIVES: The aims of this study were to characterize cardiac allograft vasculopathy (CAV) phenotypes using optical coherence tomography (OCT) and to evaluate the prognostic significance of OCT-determined CAV severity. BACKGROUND: Intravascular OCT enables in vivo characterization of CAV microstructure after heart transplantation. METHODS: Sixty-two patients undergoing heart transplantation were enrolled at routine angiography from September 2013 through October 2015 and prospectively followed until censoring on May 27, 2016...
March 10, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28330651/serial-assessment-of-tissue-precursors-and%C3%A2-progression-of-coronary-calcification-analyzed-by-fusion-of-ivus-and-oct-5-year-follow-up-of-scaffolded-and-nonscaffolded-arteries
#10
Yaping Zeng, Hiroki Tateishi, Rafael Cavalcante, Erhan Tenekecioglu, Pannipa Suwannasom, Yohei Sotomi, Carlos Collet, Shaoping Nie, Hans Jonker, Jouke Dijkstra, Maria D Radu, Lorenz Räber, Dougal R McClean, Robert-Jan van Geuns, Evald H Christiansen, Therese Fahrni, Jacques Koolen, Yoshinobu Onuma, Nico Bruining, Patrick W Serruys
OBJECTIVES: The aim of this study was to assess calcium growth with fused grayscale intravascular ultrasound (IVUS), IVUS-virtual histology, and optical coherence tomography (OCT) from baseline to 5-year follow-up in patients treated with bioresorbable vascular scaffolds. BACKGROUND: IVUS and OCT have individual strengths in assessing plaque composition and volume. Fusion of images obtained using these methods could potentially aid in coronary plaque assessment...
March 10, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28317789/intravascular-ultrasound-and-optical-coherence-tomography-images-for-direct-right-coronary-artery-injury-after-tricuspid-valve-annuloplasty
#11
Junsuke Shibuya, Nobuaki Kobayashi, Noritake Hata, Shunsuke Uetake, Masahiro Fujii, Ryuzo Bessho, Wataru Shimizu
No abstract text is available yet for this article.
March 20, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28279437/coronary-plaque-characteristics-in-hemodialysis-dependent-patients-as-assessed-by-optical%C3%A2-coherence-tomography
#12
Chee Yang Chin, Mitsuaki Matsumura, Akiko Maehara, Wenbin Zhang, Cheolmin Tetsumin Lee, Myong Hwa Yamamoto, Lei Song, Yasir Parviz, Nisha B Jhalani, Sumit Mohan, Lloyd E Ratner, David J Cohen, Ori Ben-Yehuda, Gregg W Stone, Richard A Shlofmitz, Tsunekazu Kakuta, Gary S Mintz, Ziad A Ali
Coronary arteries in patients with chronic kidney disease (CKD) have been shown to exhibit more extensive atherosclerosis and calcium. We aimed to assess characteristics of coronary plaque in hemodialysis (HD)-dependent patients using optical coherence tomography (OCT). This was a multicenter, retrospective study of 124 patients with stable angina who underwent OCT imaging. Sixty-two HD-dependent patients who underwent pre-intervention OCT for coronary artery disease were compared 1:1 with a cohort of patients without CKD, matched for age, diabetes mellitus, gender, and culprit vessel...
May 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28271001/fully-integrated-optical-coherence-tomography-ultrasound-and-indocyanine-green-based-fluorescence-tri-modality-system-for-intravascular-imaging
#13
Yan Li, Joseph Jing, Yueqiao Qu, Yusi Miao, Buyun Zhang, Teng Ma, Mingyue Yu, Qifa Zhou, Zhongping Chen
We present a tri-modality imaging system and fully integrated tri-modality probe for intravascular imaging. The tri-modality imaging system is able to simultaneously acquire optical coherence tomography (OCT), ultrasound (US), and fluorescence imaging. Moreover, for fluorescence imaging, we used the FDA-approved indocyanine green (ICG) dye as the contrast agent to target lipid-loaded macrophages. We conducted imaging from a male New Zealand white rabbit to evaluate the performance of the tri-modality system...
February 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28270857/automatic-lumen-segmentation-in-intravascular-optical-coherence-tomography-images-using-level-set
#14
Yihui Cao, Kang Cheng, Xianjing Qin, Qinye Yin, Jianan Li, Rui Zhu, Wei Zhao
Automatic lumen segmentation from intravascular optical coherence tomography (IVOCT) images is an important and fundamental work for diagnosis and treatment of coronary artery disease. However, it is a very challenging task due to irregular lumen caused by unstable plaque and bifurcation vessel, guide wire shadow, and blood artifacts. To address these problems, this paper presents a novel automatic level set based segmentation algorithm which is very competent for irregular lumen challenge. Before applying the level set model, a narrow image smooth filter is proposed to reduce the effect of artifacts and prevent the leakage of level set meanwhile...
2017: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/28267111/blind-sided-by-cosmetic-vein-sclerotherapy-a-case-of-ophthalmic-arterial-occlusion
#15
Meena Arunakirinathan, Robbie J E Walker, Noor Hassan, Sally Ameen, Saad Younis
PURPOSE: Cosmetic vein sclerotherapy is increasingly used to treat varicose veins because of its effectiveness and adherence with British Pharmacopoeia specifications. We present the first documented case of ophthalmic artery occlusion resulting in panocular ischemia secondary to intravascular injection of sodium tetradecyl sulfate sclerosant in a young healthy women seeking treatment for prominent facial veins in her forehead. METHODS: The patient presented with unilateral sudden loss of vision...
March 6, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28265791/a-systematic-review-of-imaging-anatomy-in-predicting-functional-significance-of-coronary-stenoses-determined-by-fractional-flow-reserve
#16
Miao Chu, Neng Dai, Junqing Yang, Jelmer Westra, Shengxian Tu
Fractional flow reserve (FFR) is the current gold standard to assess the physiological significance of coronary stenoses. With the development of coronary imaging techniques, several anatomic parameters have been investigated in vivo and their associations with FFR have been studied. The aim of this review is to summarize the accuracy of anatomic parameters derived by the present coronary imaging techniques including invasive coronary angiography, coronary computed tomography angiography, intravascular ultrasound and optical coherence tomography, in predicting a significant FFR...
March 6, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28256180/left-main-coronary-artery-stenosis-severity-evaluation-and-implications-for-management
#17
REVIEW
Susan E Habibi, Rahman Shah, Chalak O Berzingi, Ryan Melchior, Kevin F Sumption, Ion S Jovin
The significant stenosis of the left main coronary artery is associated with poor outcomes and is considered a strong indication for revascularization. However, deciding whether the stenosis is significant can sometimes be challenging, especially when the degree of stenosis is intermediate, and can necessitate additional tests and imaging modalities. Areas covered: We did a literature search using keywords like 'left main', 'imaging', 'intravascular ultrasound', 'fractional flow reserve', 'computed tomographic angiography' and 'magnetic resonance imaging'...
March 2017: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/28239070/lipid-lowering-therapy-to-modify-plaque-microstructures
#18
Yu Kataoka, Jordan Andrews, Rishi Puri, Peter Psaltis, Stephen J Nicholls
Due to the pandemics of obesity and diabetes mellitus, especially in the Western countries, atherosclerotic cardiovascular disease (ASCVD) has become a major health burden and is expected to increase in the future. Modifying lipid targets, especially low-density lipoprotein cholesterol (LDL-C) level, has become the first-line therapy for primary and secondary prevention of ASCVD. Intravascular imaging modalities have contributed to elucidating clinical efficacy of lipid lowering therapy on atherosclerotic plaques...
April 3, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28235809/management-and-outcome-of-patients-with-acute-coronary-syndrome-caused-by-plaque-rupture-versus-plaque-erosion-an%C3%A2-intravascular-optical-coherence-tomography-study
#19
Sining Hu, Yinchun Zhu, Yingying Zhang, Jiannan Dai, Lulu Li, Harold Dauerman, Tsunenari Soeda, Zhao Wang, Hang Lee, Chao Wang, Chunyang Zhe, Yan Wang, Gonghui Zheng, Shaosong Zhang, Haibo Jia, Bo Yu, Ik-Kyung Jang
BACKGROUND: Plaque rupture and erosion are the 2 most common mechanisms for acute coronary syndromes. However, the outcome of these 2 distinct pathologies in patients with acute coronary syndromes has never been studied. METHODS AND RESULTS: We retrospectively studied 141 patients with acute coronary syndromes who underwent optical coherence tomography (OCT) imaging of the culprit lesion prior to stenting from the Massachusetts General Hospital OCT Registry. Management (stent versus no stent), poststent OCT findings, and outcomes were compared...
February 24, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28197276/percutaneous-coronary-intervention-safety-of-methotrexate-and-its-possible-benefits-on-restenosis-after-bare-metal-stent-deployment
#20
Viviane Gouveia, Dinaldo C Oliveira, Emmanuele Tenorio, Norma Brito, Emanuel Sarinho
BACKGROUND: Percutaneous coronary intervention (PCI) revolutionized treatment of coronary artery disease. Drug-eluting stents are effective and safe but their cost is high, especially for some countries. The primary objective was to evaluate the safety of methotrexate (MTX) in patients who underwent PCI and the secondary goal was to evaluate the possibility that MTX has an impact on restenosis. METHODS: This was a transversal, prospective and descriptive study that recruited 16 patients in whom PCI was planned...
June 2016: Cardiology Research
keyword
keyword
61017
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"