Results 61 to 70 of about 603,423 (419)

Sub-micron silicon-on-insulator resonator for ultrasound detection [PDF]

, 2019
Point-like broadband ultrasound detection can significantly increase the resolution of ultrasonography and optoacoustic (photoacoustic) imaging, yet current ultrasound detectors cannot be miniaturised sufficiently. Piezoelectric transducers lose sensitivity quadratically with size reduction, while optical micro-ring resonators and Fabry-P\'erot etalons
arxiv   +1 more source

Systematic design and realization of double-negative acoustic metamaterials by topology optimization [PDF]

Acta Materialia, 15 June 2019, 2018
Double-negative acoustic metamaterials (AMMs) offer the promising ability of superlensing for applications in ultrasonography, biomedical sensing and nondestructive evaluation. Here, under the simultaneous increasing or non-increasing mechanisms, we develop a unified topology optimization framework considering the different microstructure symmetries ...
arxiv   +1 more source

Wandering spleen: A common presentation of an uncommon anomaly [PDF]

, 2009
Background: With the advent of real time ultrasonography of the abdomen, the spleen is no longer an inaccessible organ. Wandering spleen is a rare entity with only less than 500 cases reported so far.
Imo, AO, Ogbonna, CO, Ugwu , AC
core   +1 more source

Thyroid ultrasonography reporting: consensus of Italian Thyroid Association (AIT), Italian Society of Endocrinology (SIE), Italian Society of Ultrasonography in Medicine and Biology (SIUMB) and Ultrasound Chapter of Italian Society of Medical Radiology (SIRM) [PDF]

, 2018
Thyroid ultrasonography (US) is the gold standard for thyroid imaging and its widespread use is due to an optimal spatial resolution for superficial anatomic structures, a low cost and the lack of health risks.
Cantisani, V., Chiovato, L., Durante, C., Farina, R., Frasoldati, A., Garberoglio, R., Ianni, F., Pontecorvi, A., Rago, T., Spiezia, S., Vallone, G., Vitti, P.   +11 more
core   +1 more source

Distinguishing Hepatocellular Carcinoma From Hepatic Inflammatory Pseudotumor Using a Nomogram Based on Contrast-Enhanced Ultrasound

Frontiers in Oncology, 2021
BackgroundHepatocellular carcinoma (HCC) and hepatic iflammatory pseudotumor (IPT) share similar symptoms and imaging features, which makes it challenging to distinguish from each other in clinical practice.
Mengting Liao, Mengting Liao, Chenshan Wang, Chenshan Wang, Bo Zhang, Qin Jiang, Juan Liu, Jintang Liao   +7 more
doaj   +1 more source

KRAS and GNAS mutations in cell‐free DNA and in circulating epithelial cells in patients with intraductal papillary mucinous neoplasms—an observational pilot study

Molecular Oncology, EarlyView.
This study demonstrates that KRAS and GNAS mutations are more prevalent in patients with resected intraductal papillary mucinous neoplasms (IPMN) compared to those under clinical surveillance. GNAS mutations significantly differ between the two patient cohorts, indicating that their absence may serve as a potential biomarker to support conservative ...
Christine Nitschke, Marie Tölle, Philipp Walter, Kira Meißner, Mara Goetz, Jolanthe Kropidlowski, Andreas W. Berger, Jakob R. Izbicki, Felix Nickel, Thilo Hackert, Klaus Pantel, Harriet Wikman, Faik G. Uzunoglu   +12 more
wiley   +1 more source

Value of superb microvascular imaging ultrasonography in the diagnosis of carpal tunnel syndrome: Compared with color Doppler and power Doppler. [PDF]

, 2017
The aim of this study was to compare the value of superb microvascular imaging (SMI) in carpal tunnel syndrome (CTS) with that of color Doppler ultrasonography (CDUS) and power Doppler ultrasonography (PDUS).Fifty patients with symptomatic CTS and 25 ...
Chen, Jie, Chen, Li, Hu, Bing, Jiang, Li-Xin, Liu, Ji-Bin, Wang, Rui, Wu, Lei   +6 more
core   +1 more source

Effect of percutaneous injection of hemostatic agents guided by ultrasound for arresting active hemorrhage after renal biopsy

Linchuang shenzangbing zazhi
ObjectiveTo evaluate the clinical application of percutaneous injection of hemostatic agents guided by ultrasound for arresting active hemorrhage after renal biopsy.
Yan-duan Lin, rui Li, Qiao-min Fu, Jiang-hua Chen, Kun-jian Li, Xiao-feng Zhou, Hui-pin Chen   +6 more
doaj   +1 more source

Development and External Validation of a Simple-To-Use Dynamic Nomogram for Predicting Breast Malignancy Based on Ultrasound Morphometric Features: A Retrospective Multicenter Study

Frontiers in Oncology, 2022
BackgroundWith advances in high-throughput computational mining techniques, various quantitative predictive models that are based on ultrasound have been developed. However, the lack of reproducibility and interpretability have hampered clinical use.
Qingling Zhang, Qinglu Zhang, Taixia Liu, Tingting Bao, Qingqing Li, You Yang   +5 more
doaj   +1 more source

Combined spatially resolved metabolomics and spatial transcriptomics reveal the mechanism of RACK1‐mediated fatty acid synthesis

Molecular Oncology, EarlyView.
The authors analyzed the spatial distributions of gene and metabolite profiles in cervical cancer through spatial transcriptomic and spatially resolved metabolomic techniques. Pivotal genes and metabolites within these cases were then identified and validated.
Lixiu Xu, Jinqiu Li, Junqi Ma, Ayshamgul Hasim   +3 more
wiley   +1 more source