Results 91 to 100 of about 262,063 (357)
Development of a skull phantom for the assessment of implant X-ray visibility
Current Directions in Biomedical Engineering, 2016 The paper presents the development and test of a skull phantom, which can be used for the assessment of the radiographic visibility of neurovascular implants. State of the art methods are based on specimens of the human skull. These are highly individual
Hoffmann Thomas +5 more
doaj +1 more source
Neutrophil deficiency increases T cell numbers at the site of tissue injury in mice
FEBS Letters, EarlyView.In wild‐type mice, injury or acute inflammation induces neutrophil influx followed by macrophage accumulation. Mcl1ΔMyelo (neutrophil‐deficient) mice lack neutrophils, and in response to muscle injury show fewer macrophages and exhibit strikingly elevated T‐cell numbers, primarily non‐conventional “double‐negative” (DN) αβ and γδ T cells.
Hajnalka Halász +6 more
wiley +1 more source
CT Lilun yu yingyong yanjiuAccurate measurements of electron density and effective atomic number are essential for precise imaging diagnosis and dose estimation in the multiparametric functional analysis of dual-energy computed tomography (CT).
Xinliang LU +4 more
doaj +1 more source
Development of visible light‐sensitive human neuropsin (OPN5) via single amino acid substitution
FEBS Letters, EarlyView.The present study determines a key amino acid residue, Lys91, for defining UV sensitivity of human OPN5. Heterologous action spectroscopy of the wild type and K91 mutants of OPN5 in HEK293T cells reveals that substitution of Lys91 with neutral (alanine) or acidic amino acids (glutamic or aspartic acids) causes substantial shifts in spectral sensitivity
Yusuke Sakai +2 more
wiley +1 more source
Study on the Radiation Dose Distribution of Abdominal CT Scans Based on Dose Simulation Humans
CT Lilun yu yingyong yanjiuObjective: This study aimed to systematically measure and analyze the radiation dose distribution in the abdomen and specific areas of interest on the body surface during abdominal CT scans using a dose simulation phantom, providing relevant data to ...
Xiaolong NI +4 more
doaj +1 more source
EJNMMI Physics, 2015 BackgroundIn integrated PET/MR hybrid imaging the evaluation of PET performance characteristics according to the NEMA standard NU 2–2007 is challenging because of incomplete MR-based attenuation correction (AC) for phantom imaging.
S. Ziegler +4 more
semanticscholar +1 more source
Exploring lipid diversity and minimalism to define membrane requirements for synthetic cells
FEBS Letters, EarlyView.Designing the lipid membrane of synthetic cells is a complex task, in which its various roles (among them solute transport, membrane protein support, and self‐replication) should all be integrated. In this review, we report the latest top‐down and bottom‐up advances and discuss compatibility and complexity issues of current engineering approaches ...
Sergiy Gan +2 more
wiley +1 more source
A Phantom Experimental Study on Improving the Imaging Quality of Stent CT at a Fast Heart Rate
CT Lilun yu yingyong yanjiuObjective: This study aimed to investigate the impact of different imaging parameters on stent imaging and stenosis assessment in a fast heart rate model.
Tian MA +4 more
doaj +1 more source
FEBS Letters, EarlyView.The Arabidopsis mutants hls1 hlh1 and amp1 lamp1 exhibit pleiotropic developmental phenotypes. Although the functions of the causative genes remain unclear, they act in the same genetic pathway and are thought to generate non‐cell‐autonomous signals.
Takashi Nobusawa, Makoto Kusaba
wiley +1 more source
Assessment of The Effects of The Number of Projections And Use of Selected Filters on A Reconstructed Artificial Phantom [PDF]
مجلة التربية والعلمAppropriate selection of features may lead to the specificity of classification methods and identify the most critical features from all sparse or dense impact data using a filter based on the recognition selection method characterized.
Jahwar Arif +6 more
doaj +1 more source