Results 61 to 70 of about 12,568 (284)

Functional Versus Anatomic Assessment of Myocardial Bridging by Intravascular Ultrasound: Impact of Arterial Compression on Proximal Atherosclerotic Plaque

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2016
BackgroundThe presence of a myocardial bridge (MB) has been shown to promote atherosclerotic plaque formation proximal to the MB, presumably because of hemodynamic disturbances provoked by retrograde blood flow toward this segment in cardiac systole.
Ryotaro Yamada, Jennifer A. Tremmel, Shigemitsu Tanaka, Shin Lin, Yuhei Kobayashi, M. Brooke Hollak, Paul G. Yock, Peter J. Fitzgerald, Ingela Schnittger, Yasuhiro Honda   +9 more
doaj   +1 more source

All-optical dual photoacoustic and optical coherence tomography intravascular probe

Photoacoustics, 2018
Intravascular imaging in percutaneous coronary interventions can be an invaluable tool in the treatment of coronary artery disease. It is of significant interest to provide molecular imaging contrast that is complementary to structural contrast provided ...
Sunish J. Mathews, Callum Little, Christopher D. Loder, Roby D. Rakhit, Wenfeng Xia, Edward Z. Zhang, Paul C. Beard, Malcolm C. Finlay, Adrien E. Desjardins   +8 more
doaj  

A case with a large intracoronary mobile mass diagnosed with a calcified thrombus using optical frequency domain imaging and intravascular ultrasound

SAGE Open Medical Case Reports, 2017
Objectives: A calcified thrombus is rare, but needs to be recognized and to be differentiated from calcified nodule. Methods: We report a case of acute coronary syndrome and a large intracoronary mobile mass, which was identified as a calcified thrombus ...
Toshiki Kuno, Kenji Hashimoto, Syohei Imaeda, Toshinobu Ryuzaki, Tetsuya Saito, Hiroyuki Yamazaki, Ryota Tabei, Masaki Kodaira, Yohei Numasawa   +8 more
doaj   +1 more source

Repeat stent implementation for recanalization of the proximal right coronary artery: a case report

Journal of Medical Case Reports, 2018
Background A stent in a false lumen is a common cause of stent occlusion after coronary percutaneous coronary artery intervention therapy, particularly in the culprit lesion of acute myocardial infarction.
Yabin Wang, Lei Gao, Ming Zhang, Yundai Chen, Feng Cao   +4 more
doaj   +1 more source

Fractional Flow Reserve Directed Percutaneous Coronary Intervention Optimization Using High‐Definition Intravascular Ultrasound in Non‐ST‐Segment Elevation Acute Coronary Syndrome Versus Chronic Coronary Syndrome

Catheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Background Intravascular ultrasound (IVUS)‐guided optimization of suboptimal fractional flow reserve (FFR) following percutaneous coronary intervention (PCI) results in a significant increase in both post‐PCI FFR and minimal lumen and stent areas (MLA and MSA, respectively).
Frederik T. W. Groenland, Tara Neleman, Annemieke C. Ziedses des Plantes, Alessandra Scoccia, Isabella Kardys, Wijnand K. den Dekker, Jeroen M. Wilschut, Roberto Diletti, Nicolas M. Van Mieghem, Joost Daemen   +9 more
wiley   +1 more source

Exterior/interior problem for the circular means transform with applications to intravascular imaging [PDF]

arXiv, 2013
Exterior inverse problem for the circular means transform (CMT) arises in the intravascular photoacoustic imaging (IVPA), in the intravascular ultrasound imaging (IVUS), as well as in radar and sonar. The reduction of the IPVA to the CMT is quite straightforward.
arxiv  

Coronary Plaque Characteristics Assessed by Optical Coherence Tomography and Plasma Lipoprotein(a) Levels in Patients With Acute Coronary Syndrome

Catheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Background Lipoprotein(a) [Lp(a)] is associated with increased cardiovascular risk, but its influence on plaque characteristics at optical coherence tomography (OCT) evaluation is not fully understood. Aims This study seeks to explore the impact of Lp(a) levels on plaque morphology as assessed by OCT in a very high‐risk subset of patients ...
Francesca Maria Di Muro, Maria Federica Crociani, Giulia Nardi, Niccolo' Ciardetti, Lucrezia Biagiotti, Elisa Bigi, Francesco Meucci, Miroslava Stolcova, Francesca Ristalli, Emanuele Cecchi, Iacopo Muraca, Renato Valenti, Carlo Di Mario, Alessio Mattesini   +13 more
wiley   +1 more source

Ophthalmic imaging in diabetic retinopathy: A review

Clinical &Experimental Ophthalmology, Volume 50, Issue 9, Page 1082-1096, December 2022., 2022
Abstract Retinal imaging has been a key tool in the diagnosis, evaluation, management and documentation of diabetic retinopathy (DR) and diabetic macular oedema (DMO) for many decades. Imaging technologies have rapidly evolved over the last few decades, yielding images with higher resolution and contrast with less time, effort and invasiveness.
Onnisa Nanegrungsunk, Direk Patikulsila, Srinivas R. Sadda   +2 more
wiley   +1 more source

Simulating Patho-realistic Ultrasound Images using Deep Generative Networks with Adversarial Learning [PDF]

arXiv, 2017
Ultrasound imaging makes use of backscattering of waves during their interaction with scatterers present in biological tissues. Simulation of synthetic ultrasound images is a challenging problem on account of inability to accurately model various factors of which some include intra-/inter scanline interference, transducer to surface coupling, artifacts
arxiv  

Segmentation of Arterial Walls in Intravascular Ultrasound Cross-Sectional Images Using Extremal Region Selection [PDF]

, 2018
Intravascular Ultrasound (IVUS) is an intra-operative imaging modality that facilitates observing and appraising the vessel wall structure of the human coronary arteries. Segmentation of arterial wall boundaries from the IVUS images is not only crucial for quantitative analysis of the vessel walls and plaque characteristics, but is also necessary for ...
arxiv   +1 more source