Results 1 to 10 of about 3,163,170 (322)

Assessment of the Diagnostic Ability of Four Detection Methods Using Three Sample Types of COVID-19 Patients

open access: yesFrontiers in Cellular and Infection Microbiology, 2021
BackgroundViral nucleic acid detection is considered the gold standard for the diagnosis of coronavirus disease 2019 (COVID-19), which is caused by SARS-CoV-2 infection.
Fei Yu   +42 more
doaj   +1 more source

X-ray attenuation of adipose breast tissue: in-vitro and in-vivo measurements using spectral imaging [PDF]

open access: yesProc. SPIE 9412, Medical Imaging 2015, 94121U, 2021
The development of new x-ray imaging techniques often requires prior knowledge of tissue attenuation, but the sources of such information are sparse. We have measured the attenuation of adipose breast tissue using spectral imaging, in vitro and in vivo.
arxiv   +1 more source

Differential proteomic analysis of plasma-derived exosomes as diagnostic biomarkers for chronic HBV-related liver disease

open access: yesScientific Reports, 2022
Hepatitis B virus (HBV) infection is still a major public health problem worldwide. We aimed to identify new, non-invasive biomarkers for the early diagnosis of chronic HBV-related diseases, reveal alterations in the progression of chronic hepatitis B ...
Bo Ye   +6 more
doaj   +1 more source

Molecular Portrait of GISTs Associated With Clinicopathological Features: A Retrospective Study With Molecular Analysis by a Custom 9-Gene Targeted Next-Generation Sequencing Panel

open access: yesFrontiers in Genetics, 2022
Objectives: The study aims to investigate genetic characterization of molecular targets and clinicopathological features with gastrointestinal stromal tumors based on targeted next-generation sequencing.Materials and Methods: We selected 106 patients ...
Haoran Qian   +8 more
doaj   +1 more source

ddPCR provides a sensitive test compared with GeneXpert MTB/RIF and mNGS for suspected Mycobacterium tuberculosis infection

open access: yesFrontiers in Cellular and Infection Microbiology, 2023
IntroductionThe Metagenomics next-generation sequencing (mNGS) and GeneXpert MTB/RIF assay (Xpert) exhibited a sensitivity for tuberculosis (TB) diagnostic performance. Research that directly compared the clinical performance of ddPCR analysis, mNGS, and
Dan Zhang   +24 more
doaj   +1 more source

Evaluation of multiplex ARMS-PCR for detection of Helicobacter pylori mutations conferring resistance to clarithromycin and levofloxacin

open access: yesGut Pathogens, 2020
Background Helicobacter pylori bacterium is a major cause of gastritis. With increasing use of antibiotics to treat infections, mutation resistant strains have emerged in most human populations.
Yangxia Li   +7 more
doaj   +1 more source

The effect of different cementation techniques on the amount of remaining excess cement depending on the crown-abutment margin level [PDF]

open access: yesVojnosanitetski Pregled, 2023
Background/Aim. One of the disadvantages of the cement-retained fixed implant-supported restorations is the residual cement, which is found on the superstructure after the cementation procedure and has been identified as a risk factor for the occurrence ...
Đorđević Aleksandar   +5 more
doaj   +1 more source

A Nonlinear Beamforming for Enhanced Spatiotemporal Sensitivity in High Frame Rate Ultrasound Flow Imaging [PDF]

open access: yesComputers in Biology and Medicine (2022): 105686, 2021
Typically, an ultrasound flow imaging system employs the conventional delay and sum (DAS) beamformer due to its inherent low complexity. But the conventional DAS technique offers poor contrast, low imaging resolution, and limited spatiotemporal sensitivity.
arxiv   +1 more source

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