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https://www.readbyqxmd.com/read/28092507/real-time-intravascular-ultrasound-and-photoacoustic-imaging
#1
Donald VanderLaan, Andrei B Karpiouk, Doug Yeager, Stanislav Emelianov
Combined intravascular ultrasound and intravascular photoacoustic (IVUS/IVPA) imaging is an emerging hybrid modality being explored as a means of improving the characterization of atherosclerotic plaque anatomical and compositional features. While initial demonstrations of the technique have been encouraging, they have been limited by catheter rotation and data acquisition, displaying, and processing rates on the order of several seconds per frame as well as the use of off-line image processing. Herein, we present a complete IVUS/IVPA imaging system and method capable of real-time IVUS/IVPA imaging, with online data acquisition, image processing, and display of both IVUS and IVPA images...
January 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28090000/neoatherosclerosis-in-the-iliac-artery-stent%C3%A3-insights-from-optical-coherence-tomography-and-intravascular-ultrasound
#2
Takeshi Yagyu, Osami Kawarada, Fumiyuki Otsuka, Teruo Noguchi, Satoshi Yasuda
No abstract text is available yet for this article.
January 15, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28039209/everolimus-eluting-stents-stabilize-plaque-inflammation-in-vivo-assessment-by-intravascular-fluorescence-molecular-imaging
#3
Marcella A Calfon Press, Georgios Mallas, Amir Rosenthal, Tetsuya Hara, Adam Mauskapf, R Nika Nudelman, Alexander Sheehy, Igor V Polyakov, Frank Kolodgie, Renu Virmani, J Luis Guerrero, Vasilis Ntziachristos, Farouc A Jaffer
AIMS: Inflammation drives atherosclerosis complications and is a promising therapeutic target for plaque stabilization. At present, it is unknown whether local stenting approaches can stabilize plaque inflammation in vivo. Here, we investigate whether everolimus-eluting stents (EES) can locally suppress plaque inflammatory protease activity in vivo using intravascular near-infrared fluorescence (NIRF) molecular imaging. METHODS AND RESULTS: Balloon-injured, hyperlipidaemic rabbits with atherosclerosis received non-overlapping EES and bare metal stents (BMS) placement into the infrarenal aorta (n = 7 EES, n = 7 BMS, 3...
December 29, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28031233/quantitative-intravascular-biological-fluorescence-ultrasound-imaging-of-coronary-and-peripheral-arteries-in-vivo
#4
Dmitry Bozhko, Eric A Osborn, Amir Rosenthal, Johan W Verjans, Tetsuya Hara, Stephan Kellnberger, Georg Wissmeyer, Saak V Ovsepian, Jason R McCarthy, Adam Mauskapf, Ashley F Stein, Farouc A Jaffer, Vasilis Ntziachristos
AIMS: (i) to evaluate a novel hybrid near-infrared fluorescence-intravascular ultrasound (NIRF-IVUS) system in coronary and peripheral swine arteries in vivo; (ii) to assess simultaneous quantitative biological and morphological aspects of arterial disease. METHODS AND RESULTS: Two 9F/15MHz peripheral and 4.5F/40MHz coronary near-infrared fluorescence (NIRF)-IVUS catheters were engineered to enable accurate co-registrtation of biological and morphological readings simultaneously in vivo...
December 27, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28030655/percutaneous-coronary-intervention-with-bioresorbable-scaffolds-in-a-young-child
#5
Tamim M Nazif, Sanjog Kalra, Ziad A Ali, Dimitrios Karmpaliotis, Mariel E Turner, Thomas J Starc, Yang Cao, Charles C Marboe, Michael B Collins, Martin B Leon, Ajay J Kirtane
Importance: Although much less frequent than in adults, coronary artery disease requiring revascularization may develop in children because of homozygous familial hypercholesterolemia or other underlying conditions. Percutaneous coronary intervention (PCI) with a bioresorbable scaffold (BRS) may have advantages over metallic coronary stents in this population. Objective: To present a case of the successful treatment of unstable, multivessel coronary artery disease in a child with PCI with BRS implantation...
December 28, 2016: JAMA Cardiology
https://www.readbyqxmd.com/read/28012553/comparison-of-percutaneous-coronary-intervention-versus-coronary-artery-bypass-grafting-for-unprotected-left-main-coronary-artery-disease
#6
REVIEW
Syed Yaseen Naqvi, Jordan Klein, Tisa Saha, Daniel J McCormick, Sheldon Goldberg
Coronary artery bypass grafting (CABG) decreases mortality in patients with significant left main (LM) coronary artery disease and for years remained the therapy of choice for patients with this ominous lesion. Advances in percutaneous coronary intervention (PCI) have enabled it to become an alternative to CABG. The results of observational registries and randomized comparisons have shown the safety and efficacy of PCI in appropriately selected patients with low or intermediate angiographic risk scores. Furthermore, the use of physiological measures of flow limitation and the use of intracoronary imaging techniques has added benefit and improved outcomes...
November 16, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/28012050/comparative-assessment-of-plaque-media-change-on-three-modalities-of-ivus-immediately-after-implantation-of-either-everolimus-eluting-bioresorbable-vascular-scaffold-or-everolimus-eluting-metallic-stent-in-absorb-ii-study
#7
Yaping Zeng, Rafael Cavalcante, Erhan Tenekecioglu, Pannipa Suwannasom, Yohei Sotomi, Carlos Collet, Mahammad Abdelghani, Hans Jonker, Franck Digne, Dieter Horstkotte, Manfred Zehender, Ciro Indolfi, Francesco Saia, Rosario Fiorilli, Bernard Chevalier, Leonardo Bolognese, Javier Goicolea, Shaoping Nie, Yoshinobu Onuma, Patrick W Serruys
The purpose of the study to assess the comparability of immediate changes in plaque/media volume (PV) on three modalities of intravascular ultrasound (IVUS) after implantation of either bioresorbable vascular scaffold (BVS) or everolimus-eluting metallic stent (EES) in Absorb II Study. The two devices have different device volume and ultrasound backscattering that may interfere with the "plaque/media" assessed by three modalities on IVUS: grayscale, backscattering of radiofrequency and brightness function. In a multicenter randomized controlled trial, 501 patients with stable or unstable angina underwent documentary IVUS pre- and post- implantation...
December 23, 2016: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28007741/predictors-and-long-term-clinical-impact-of-acute-stent-malapposition-an-assessment-of-dual-antiplatelet-therapy-with-drug-eluting-stents-adapt-des-intravascular-ultrasound-substudy
#8
Bin Wang, Gary S Mintz, Bernhard Witzenbichler, Cristiano F Souza, D Christopher Metzger, Michael J Rinaldi, Peter L Duffy, Giora Weisz, Thomas D Stuckey, Bruce R Brodie, Mitsuaki Matsumura, Myong-Hwa Yamamoto, Rupa Parvataneni, Ajay J Kirtane, Gregg W Stone, Akiko Maehara
BACKGROUND: The impact of acute stent malapposition (ASM) on long-term clinical outcomes in patients undergoing percutaneous coronary intervention is still controversial. We sought to evaluate predictors and long-term clinical outcomes of ASM. METHODS AND RESULTS: ADAPT-DES (Assessment of Dual Antiplatelet Therapy With Drug-Eluting Stents) was a prospective multicenter study of 8663 patients undergoing percutaneous coronary intervention using drug-eluting stents...
December 22, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27999810/development-of-a-new-hybrid-biodegradable-drug-eluting-stent-for-the-treatment-of-peripheral-artery-disease
#9
Jung-Hee Lee, Soon-Joong Kim, Se-Il Park, Young-Guk Ko, Donghoon Choi, Myeong-Ki Hong, Yangsoo Jang
This study aimed to develop a new biodegradable stent for peripheral artery disease (PAD) that could provide sufficient radial force to maintain long-term patency and flexibility. All self-expandable hybrid biodegradable stents were designed by using a knitting structure composed of poly-L-lactic acid (PLLA) and nitinol. Four different types of stents were implanted in 20 iliac arteries in 10 mini pigs as follows: a bare-metal stent (BMS) (group 1, n = 5), a drug-free hybrid stent (group 2, n = 5), a 50% (50 : 100, w/w) paclitaxel (PTX)/poly-lactide-co-glycolic acid (PLGA; fast PTX-releasing form) hybrid stent (group 3, n = 5), and a 30% (30 : 100, w/w) PTX/PLGA (slow PTX-releasing form) hybrid stent (group 4, n = 5)...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27993755/clinical-angiographic-ivus-and-oct-predictors-for-irregular-protrusion-after-coronary-stenting
#10
Krzysztof L Bryniarski, Seung-Jea Tahk, So-Yeon Choi, Tsunenari Soeda, Takumi Higuma, Erika Yamamoto, Lei Xing, Jiannan Dai, Thomas Zanchin, Hang Lee, Ik-Kyung Jang
AIMS: Irregular protrusion identified by optical coherence tomography (OCT) immediately following stent implantation has been reported as an independent predictor for adverse cardiac events at 1 year. However, baseline characteristics for development of irregular protrusion are unknown. The aim of the study was to identify predictors for irregular protrusion following stent implantation. METHODS AND RESULTS: A total of 900 lesions in 786 patients who had post-stent OCT imaging were analyzed...
December 20, 2016: EuroIntervention
https://www.readbyqxmd.com/read/27987616/deep-venous-thrombosis-associated-with-caval-extension-of-iliac-stents
#11
Erin H Murphy, Blake Johns, Elliot Varney, William Buck, Arjun Jayaraj, Seshadri Raju
BACKGROUND: It is generally difficult to place an iliac vein stent precisely at the iliocaval junction with venographic control or even with intravascular ultrasound guidance. Furthermore, mechanical properties of the Wallstent (Boston Scientific, Marlborough, Mass) can predispose precisely placed stents to distal displacement or stent collapse. Our center has thus advocated extending Wallstents 3 to 5 cm into the inferior vena cava to prevent complications of missed proximal lesions or stent migration...
January 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/27981243/controlling-the-surface-mediated-release-of-dna-using-mixed-multilayers
#12
Visham Appadoo, Matthew C D Carter, David M Lynn
We report the design of erodible 'mixed multilayer' coatings fabricated using plasmid DNA and combinations of both hydrolytically degradable and charge-shifting cationic polymer building blocks. Films fabricated layer-by-layer using combinations of a model poly(β-amino ester) (polymer 1) and a model charge-shifting polymer (polymer 2) exhibited DNA release profiles that were substantially different than those assembled using DNA and either polymer 1 or polymer 2 alone. In addition, the order in which layers of these two cationic polymers were deposited during assembly had a profound impact on DNA release profiles when these materials were incubated in physiological buffer...
June 2016: Bioeng Transl Med
https://www.readbyqxmd.com/read/27976456/neoatherosclerosis-after-paclitaxel-eluting-stent-implantation-ex-vivo-intravascular-image-and-histopathology
#13
Rika Kawakami, Hiroyuki Hao, Yasu-Aki Tsuchida, Akiko Fujino, Takahiro Imanaka, Ten Saita, Kenichi Fujii, Masaharu Ishihara, Seiichi Hirota
No abstract text is available yet for this article.
January 2017: Pathology International
https://www.readbyqxmd.com/read/27970186/tct-797-intravascular-ultrasound-findings-associating-with-decline-of-fractional-flow-reserve-after-superficial-femoral-artery-stenting
#14
Norihiro Kobayashi, Keisuke Hirano, Masahiro Yamawaki, Motoharu Araki, Yoshiaki Ito
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27970182/tct-795-2-year-outcome-of-intravascular-ultrasound-ivus-guided-iliac-vein-stenting
#15
Tien Yu Wu
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27969955/tct-584-is-there-benefit-in-intravascular-ultrasound-guided-stenting-in-simple-left-main-disease
#16
Yong Hoon Kim, Seung-Woon Rha, Ae-Young Her, Byoung Geol Choi, Jae Kyeong Byun, Se Yeon Choi, Jun Hyuk Kang, Woo Hyeun Kim, Ja Yeon Choi, James Hall, Sung Hun Park, SunKi Lee, Hu Li, Jin Oh Na, Cheol Ung Choi, Jin Won Kim, Hong Euy Lim, Eung Ju Kim, Chang Gyu Park, Hong-Seog Seo, Dong Joo Oh
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27969948/tct-577-intravascular-ultrasound-guidance-during-percutaneous-coronary-intervention-using-second-generation-drug-eluting-stents-improves-clinical-outcomes-and-reduces-restenosis-rates-a-comparative-8-265-patient-meta-analysis
#17
Kunal Verma, Caitlin Cheshire, Nitesh Nerlekar, Liam McCormick, James Cameron, Martin Bennett, Ian Meredith, Adam Brown
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27969932/tct-564-effect-of-intravascular-ultrasound-guided-vs-angiography-guided-new-generation-drug-eluting-stent-implantation-meta-analysis-with-individual-patient-level-data-from-2-345-randomized-patients
#18
Dong-Ho Shin, Sung-Jin Hong, Gary Mintz, Jung-Sun Kim, Byeong-Keuk Kim, Young-Guk Ko, Donghoon Choi, Yangsoo Jang, Myeong-Ki Hong
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27969929/tct-560-novel-predictor-of-target-vessel-revascularization-after-coronary-stent-implantation-intraluminal-intensity-of-blood-speckle-on-intravascular-ultrasound
#19
Yuichi Saito, Hideki Kitahara, Takashi Nakayama, Yoshihide Fujimoto, Yoshio Kobayashi
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27969923/tct-554-meta-analysis-of-randomized-trials-evaluating-the-outcomes-with-intravascular-ultrasound-guided-stent-implantation
#20
Islam Elgendy, Ahmed Mahmoud, Akram Elgendy, Anthony Bavry
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
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