Results 71 to 80 of about 497,841 (322)

Avaliação da perfusão e função miocárdicas em vítimas de escorpionismo utilizando o Gated-SPECT Evaluación de la perfusión y función miocárdicas en víctimas de escorpionismo utilizando el Gated-SPECT Assessment of myocardial perfusion and function in victims of scorpion envenomation using Gated-SPECT

Arquivos Brasileiros de Cardiologia, 2010
FUNDAMENTO: O choque cardiogênico e o edema agudo de pulmão são as principais causas de óbito em pacientes com escorpionismo, cujo mecanismo fisiopatológico ainda é controverso.
Alexandre Baldini de Figueiredo, Palmira Cupo, Antônio O Pintya, Fábio Caligaris, José A Marin-Neto, Sylvia E Hering, Marcus Vinicius Simões   +6 more
doaj   +1 more source

Perfusion parameter estimation using neural networks and data augmentation [PDF]

arXiv, 2018
Perfusion imaging plays a crucial role in acute stroke diagnosis and treatment decision making. Current perfusion analysis relies on deconvolution of the measured signals, an operation that is mathematically ill-conditioned and requires strong regularization.
arxiv  

On the sensitivity of the diffusion MRI signal to brain activity in response to a motor cortex paradigm [PDF]

, 2019
Diffusion functional MRI (dfMRI) is a promising technique to map functional activations by acquiring diffusion-weighed spin-echo images. In previous studies, dfMRI showed higher spatial accuracy at activation mapping compared to classic functional MRI approaches.
arxiv   +1 more source

Multi‐Scaled Cellulosic Nanonetworks from Tunicates

Advanced Functional Materials, EarlyView.
Microbial and plant nanonetworks of cellulose have enabled a wide range of high‐performance yet sustainable materials. Herein, a third class of cellulosic nanonetworks is showcased by exploiting the only animal tissue‐producing cellulose nanofibers, i.e., ascidians. An ultrastructure including spherical cells and a microvasculature with diameters of 50–
Mano Govindharaj, Mohamed Hamid Salim, M‐Haidar A. Dali, Sarath Haridas Kaniyamparambil, Sagar S. Arya, Zubeen Hathi, Srinivas Mettu, Erlantz Lizundia, Anna Maria Pappa, Charalampos Pitsalidis, Blaise L. Tardy   +10 more
wiley   +1 more source

Simulated cardiopulmonary bypass: a high fidelity model for developing and accessing clinical perfusion skills

Advances in Simulation
Background Traditionally, novice perfusionists learn and practice clinical skills, during live surgical procedures. The profession’s accrediting body is directing schools to implement simulated cardiopulmonary bypass (CPB) into the curriculum ...
Bruce E. Searles, Jeffrey B. Riley, Edward M. Darling, Jason R. Wiles   +3 more
doaj   +1 more source

Cell Membrane Vesicle Camouflaged Artificial Cells

Advanced Functional Materials, EarlyView.
Artificial cells camouflaged with a cell membrane vesicle coating are able to assemble into synthetic aggregates that exhibit rudimentary communication capabilities. Additionally, when these artificial cells are equipped with antioxidant capabilities, they are able to protect the intracellular homeostasis in HepG2 cells present in semi‐synthetic ...
Paula De Dios Andres, Stefan Pendlmayr, Noga Gal, Cathrine Abild Meyer, Cecilie Ryberg, Olav Vestrheim, Noel Angelo Kalacas, Fatih Demir, Markus M. Rinschen, Karsten Haupt, Rajeshwar Prosad Mookerjee, Brigitte Städler   +11 more
wiley   +1 more source

Integration of Electronic Perfusion Data for Perfusion Registries

The Journal of ExtraCorporeal Technology, 2018
Although the potential for the utilization of electronic perfusion data (EPD) from proprietary software to facilitate the understanding and improvement of cardiopulmonary bypass (CPB) has been recognized, the generalizability of previous reports of EPD integration are limited by superceded software or lack of sufficient detail for reproducibility.
Richard F, Newland, Robert A, Baker, Chris A, Barratt   +2 more
openaire   +2 more sources

Tunable Thermoshrinkable Hydrogels for 4D Fabrication of Cell‐Seeded Channels

Advanced Functional Materials, EarlyView.
A thermoresponsive polymer with methacrylate groups for photo‐cross‐linking, based on polyethylene glycol, N‐isopropylacrylamide, and 2‐hydroxyethyl acrylate is synthetized to yield hydrogels that shrink upon temperature increase. The new polymer enables the fabrication of cell‐laden perfusable channels with diameters below 200 µm by combining ...
Greta Di Marco, Marc Falandt, Myriam Neumann, Martina Viola, Thibault Sampon, Marta G. Valverde, Anne Metje van Genderen, Silvia M. Mihaila, Cornelus F. van Nostrum, Bas G. P. van Ravensteijn, Riccardo Levato, Rosalinde Masereeuw, Tina Vermonden   +12 more
wiley   +1 more source

Accelerated Reconstruction of Perfusion-Weighted MRI Enforcing Jointly Local and Nonlocal Spatio-temporal Constraints [PDF]

arXiv, 2017
Perfusion-weighted magnetic resonance imaging (MRI) is an imaging technique that allows one to measure tissue perfusion in an organ of interest through the injection of an intravascular paramagnetic contrast agent (CA). Due to a preference for high temporal and spatial resolution in many applications, this modality could significantly benefit from ...
arxiv  

Living Microalgae‐Based Magnetic Microrobots for Calcium Overload and Photodynamic Synergetic Cancer Therapy

Advanced Healthcare Materials, EarlyView.
A magnetic microrobot fabricated by Spirulina platensis is proposed to accumulate in tumor regions and generate in situ high calcium concentration and sufficient oxygen. These characteristics of the microrobot present a strategy for triggering calcium overload therapy and chlorophyll‐mediated photodynamic therapy, and such combination resulted in a ...
Shuai Jiang, Bo Hao, Xin Song, Yihang Jiang, Junjia Guo, Yuqiong Wang, Qinglong Wang, Xin Wang, Tiantian Xu, Xinyu Wu, Kai Fung Chan, Philip Wai Yan Chiu, Li Zhang   +12 more
wiley   +1 more source