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http://dx.doi.org/10.1093/eurheartj/ehz618 | DOI Listing |
Anal Chim Acta
January 2025
Department of Chemistry, National Chung Hsing University, Taichung City, 402202, Taiwan, ROC. Electronic address:
Background: To integrate valves, manifolds, and solid-phase extraction (SPE) columns into a compact device is technically difficult. Four-dimensional printing (4DP) technologies, employing stimuli-responsive materials in three-dimensional printing (3DP), are revolutionizing the fabrication, functionality, and applicability of stimuli-responsive analytical devices that can show time-dependent shape programming to enable more complex geometric designs and functions. However, 4D-printed stimuli-responsive actuators and valves utilized to control flowing streams in SPE applications remain rare.
View Article and Find Full Text PDFFour-dimensional flow magnetic resonance imaging (4D flow MRI) was utilized to analyze an aortic dissection with an aberrant right subclavian artery, revealing vortex formation and an increased oscillatory shear index (OSI), both indicative of variations in wall shear stress. An elevated OSI has been associated with an elevated risk of aortic dissection.
View Article and Find Full Text PDFFront Cardiovasc Med
December 2024
Department of Cardiology, University of Medicine and Pharmacy of Craiova, Craiova, Romania.
Cardiac resynchronization therapy (CRT) offers significant benefits in symptom alleviation, reduction of rehospitalization rates, and overall survival of patients with heart failure (HF) with reduced ejection fraction (rEF). However, despite its proven efficacy, precisely identifying suitable CRT candidates remains a challenge, with a notable proportion of patients experiencing non-response. Accordingly, many attempts have been made to enhance patient selection, and to identify the best imaging parameters to predict the response and survival after CRT implantation.
View Article and Find Full Text PDFAnal Chem
December 2024
Department of Chemistry, National Chung Hsing University, Taichung City 402202, Taiwan, ROC.
Four-dimensional printing (4DP) technologies can expand the functionality of stimuli-responsive devices to enable the integration of multiple stimuli-responsive parts into a compact device. Herein, we used digital light processing three-dimensional printing technique, flexible photocurable resins, and photocurable resins of the temperature-responsive hydrogels comprising -isopropylacrylamide (NIPAM), ,'-methylenebis(acrylamide) (MBA), and graphene for 4DP of a lab-on-valve (LOV) solid-phase extraction (SPE) device. This device featured flow manifolds and a monolithic packing connected by four near-infrared (NIR)-actuated temperature-responsive switching valves composed of a poly(NIPAM/MBA) (PNM) ball pushing a flexible membrane.
View Article and Find Full Text PDFVasc Specialist Int
December 2024
Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
The complex hemodynamic environment within the aortic lumen plays a crucial role in the progression of aortic diseases such as aneurysms and dissections. Traditional imaging modalities often fail to provide comprehensive flow dynamics that are essential for precise risk assessment and timely intervention. The advent of time-resolved, three-dimensional (3D) phase-contrast magnetic resonance imaging (4D flow MRI) has revolutionized the evaluation of aortic diseases by allowing a detailed visualizations of flow patterns and quantification of hemodynamic parameters.
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