Results 81 to 90 of about 366,454 (332)

Advances in Halide Perovskites for Photon Radiation Detectors

open access: yesAdvanced Materials Technologies, EarlyView.
This work highlights recent progress in perovskite‐based photon radiation detectors, covering organic–inorganic hybrid, inorganic, lead‐free double, and vacancy‐ordered halide perovskites. Their detection performance is compared, material‐specific advantages and challenges are examined, and provides insight into current limitations and future ...
Liangling Wang   +3 more
wiley   +1 more source

Innovations in Instrumentation for Positron Emission Tomography.

open access: yesSeminars in nuclear medicine, 2018
PET scanners are sophisticated and highly sensitive biomedical imaging devices that can produce highly quantitative images showing the 3-dimensional distribution of radiotracers inside the body.
E. Berg, S. Cherry
semanticscholar   +1 more source

CMOS‐Compatible Short‐Wave Infrared Linear Arrays of Ge‐on‐Si Avalanche Photodiodes

open access: yesAdvanced Photonics Research, EarlyView.
The fabrication and characterization of a new type of surface‐illuminated Si‐based avalanche photodiode array operating in the short‐wave infrared region using germanium as the absorber and silicon as the multiplier is reported. The demonstration of an avalanche gain of 24 at a temperature of 378 K allows the devices to operate in outdoor environments.
Mrudul Modak   +15 more
wiley   +1 more source

Identifying active vascular microcalcification by 18F-sodium fluoride positron emission tomography

open access: yesNature Communications, 2015
Vascular calcification is a complex biological process that is a hallmark of atherosclerosis. While macrocalcification confers plaque stability, microcalcification is a key feature of high-risk atheroma and is associated with increased morbidity and ...
Agnese Irkle   +13 more
semanticscholar   +1 more source

A SERS‐Based Antibody‐Aptamer Sandwich Assay for Extracellular Vesicle‐Associated Tau Detection Using Gold Nanoparticles

open access: yesAdvanced Sensor Research, EarlyView.
Tau protein plays a critical role in the pathology of Alzheimer's disease, utilizing extracellular vesicles (EVs) as a mechanism for intercellular transmission. This study develops a highly sensitive sandwich assay biosensor for detecting and quantifying tau‐associated EVs using surface‐enhanced Raman spectroscopy (SERS).
Saqer Al Abdullah   +6 more
wiley   +1 more source

BAG2 Inhibits Cervical Cancer Progression by Modulating Type I Interferon Signaling through Stabilizing STING

open access: yesAdvanced Science, EarlyView.
Based on IP‐MS analysis, BAG2 is confirmed to be essential for ubiquitination and protein homeostasis regulation of STING in cervical cancer. BAG2 inhibits the ubiquitination and degradation of STING by forming a complex with STUB1, thereby activating the type I IFN signaling pathway and inhibiting the development of cervical cancer.
Shijie Yao   +6 more
wiley   +1 more source

Existing Pittsburgh Compound-B positron emission tomography thresholds are too high: statistical and pathological evaluation.

open access: yesBrain : a journal of neurology, 2015
Amyloid-β, a hallmark of Alzheimer's disease, begins accumulating up to two decades before the onset of dementia, and can be detected in vivo applying amyloid-β positron emission tomography tracers such as carbon-11-labelled Pittsburgh compound-B.
S. Villeneuve   +22 more
semanticscholar   +1 more source

Noninvasive Assessment of β‐Secretase Activity Through Click Chemistry‐Mediated Enrichment of Neuronal Extracellular Vesicles to Detect Alzheimer's Disease

open access: yesAdvanced Science, EarlyView.
This study presents the NEV β‐secretase activity assay, a groundbreaking method for noninvasive evaluation of β‐secretase activity in Alzheimer's disease (AD) patients, enabling the generation of individualized β‐secretase activity profiles.
Hyoyong Kim   +19 more
wiley   +1 more source

Clinically Valuable Quality Control for PET/MRI Systems: Consensus Recommendation From the HYBRID Consortium

open access: yesFrontiers in Physics, 2019
Quality control (QC) of medical imaging devices is essential to ensure their proper function and to gain accurate and quantitative results. Therefore, several international bodies have published QC guidelines and recommendations for a wide range of ...
Alejandra Valladares   +17 more
doaj   +1 more source

The State of High‐Resolution Imaging of the Human Inner Ear: A Look Into the Black Box

open access: yesAdvanced Science, EarlyView.
High‐resolution imaging of the cochlea is challenged by numerous unique aspects of this organ, where sensorineural cells, crucial for hearing, are too small for conventional modalities like magnetic resonance imaging and computed tomography. This article reviews current imaging techniques, emerging technologies, and innovations aimed at improving ...
Shelley Batts   +3 more
wiley   +1 more source

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