Results 31 to 40 of about 123,390 (306)

A dual-time-window protocol to reduce acquisition time of dynamic tau PET imaging using [18F]MK-6240

open access: yesEJNMMI Research, 2021
Background [18F]MK-6240 is a PET tracer with sub-nanomolar affinity for neurofibrillary tangles. Therefore, tau quantification is possible with [18F]MK-6240 PET/CT scans, and it can be used for assessment of Alzheimer’s disease. However, long acquisition
Guilherme D. Kolinger   +7 more
doaj   +1 more source

Characteristic cerebral perfusion pattern in neuronal intranuclear inclusion disease

open access: yesFrontiers in Neuroscience, 2022
BackgroundNeuronal intranuclear inclusion disease (NIID), which pathogenesis remains largely unclear, is a neurodegenerative disease caused by GGC repeat expansion in NOTCH2NLC gene.
Hong-Fei Tai   +17 more
doaj   +1 more source

Effects of apolipoprotein E polymorphism on cerebral oxygen saturation, cerebral perfusion, and early prognosis after traumatic brain injury

open access: yesAnnals of Clinical and Translational Neurology, 2023
Objective To investigate the effects of the apolipoprotein E (APOE) gene on oxygen saturation and cerebral perfusion in the early stages of traumatic brain injury (TBI). Methods This study included 136 consecutive TBI patients and 51 healthy individuals.
Xun Lin   +9 more
doaj   +1 more source

High-density speckle contrast optical tomography (SCOT) for three dimensional tomographic imaging of the small animal brain [PDF]

open access: yes, 2017
High-density speckle contrast optical tomography (SCOT) utilizing tens of thousands of source-detector pairs, was developed for in vivo imaging of blood flow in small animals.
Culver, Joseph P   +6 more
core   +3 more sources

Disease activity and cognition in rheumatoid arthritis : an open label pilot study [PDF]

open access: yes, 2012
Acknowledgements This work was supported in part by NIHR Newcastle Biomedical Research Centre. Funding for this study was provided by Abbott Laboratories.
Birchall, Daniel   +6 more
core   +1 more source

Potential use of oxygen as a metabolic biosensor in combination with T2*-weighted MRI to define the ischemic penumbra [PDF]

open access: yes, 2008
We describe a novel magnetic resonance imaging technique for detecting metabolism indirectly through changes in oxyhemoglobin:deoxyhemoglobin ratios and T2* signal change during ‘oxygen challenge’ (OC, 5 mins 100% O2). During OC, T2* increase reflects O2
Barrie Condon   +14 more
core   +1 more source

Combining Low-dose Perfusion with Dual-energy CT Scanning for Pancreatic Neuroendocrine Tumors

open access: yesCT Lilun yu yingyong yanjiu
Objectives: This study explores the clinical value of one-time, low-dose pancreatic CT perfusion combined with dual-energy scanning for detecting pancreatic neuroendocrine tumors. Methods: We retrospectively analyzed data from 23 patients with surgically
Xiaoying HUANG   +5 more
doaj   +1 more source

A New Approach in Risk Stratification by Coronary CT Angiography. [PDF]

open access: yes, 2014
For a decade, coronary computed tomographic angiography (CCTA) has been used as a promising noninvasive modality for the assessment of coronary artery disease (CAD) as well as cardiovascular risks.
Budoff, Matthew J, Nakanishi, Rine
core   +3 more sources

Twente Optical Perfusion Camera: system overview and performance for video rate laser Doppler perfusion imaging [PDF]

open access: yes, 2009
We present the Twente Optical Perfusion Camera (TOPCam), a novel laser Doppler Perfusion Imager based on CMOS technology. The tissue under investigation is illuminated and the resulting dynamic speckle pattern is recorded with a high speed CMOS camera ...
Draijer, Matthijs   +3 more
core   +13 more sources

An in vivo biosensor for neurotransmitter release and in situ receptor activity. [PDF]

open access: yes, 2010
Tools from molecular biology, combined with in vivo optical imaging techniques, provide new mechanisms for noninvasively observing brain processes. Current approaches primarily probe cell-based variables, such as cytosolic calcium or membrane potential ...
Griesbeck, Oliver   +6 more
core   +2 more sources

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