Zobrazeno 1 - 10
of 1 114
pro vyhledávání: '"MEAN TRANSIT-TIME"'
Autor:
Michel Destine, Alain Seret
Publikováno v:
EJNMMI Reports, Vol 8, Iss 1, Pp 1-14 (2024)
Abstract Purpose Our objective was to assess a deconvolution and denoising technique based on Legendre polynomials compared to matrix deconvolution on dynamic 18F-FDG renography of healthy patients. Method The study was carried out and compared to th
Externí odkaz:
https://doaj.org/article/4ef37788de4f4ec0abf8f763f2d95cb4
Cerebral perfusion metrics calculated directly from a hypoxia-induced step change in deoxyhemoglobin
Autor:
James Duffin, Ece Su Sayin, Olivia Sobczyk, Julien Poublanc, David J. Mikulis, Joseph A. Fisher
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024)
Abstract Resting cerebral perfusion metrics can be calculated from the MRI ΔR2* signal during the first passage of an intravascular bolus of a Gadolinium-based contrast agent (GBCA), or more recently, a transient hypoxia-induced change in the concen
Externí odkaz:
https://doaj.org/article/12568e23cccb48909bbdc57866bedd4b
Predictive Value of CT Perfusion Parameters in Traumatic Brain Injury Patients: A Longitudinal Study
Autor:
Md Khalaf Saba, Mohammad Tabish Khan, Mehtab Ahmad, Raman Mohan Sharma, Ibne Ahmad, Sabahat Tazeen, Mohd Musheer Altaf, Seemin Azmat
Publikováno v:
International Journal of Anatomy Radiology and Surgery, Vol 13, Iss 03, Pp 18-21 (2024)
Introduction: Traumatic Brain Injury (TBI) is the most common cause of mortality and morbidity worldwide. Moreover, cerebral contusions, Subdural Haemorrhages (SDH), Extradural Haemorrhages (EDH), and Subarachnoid Haemorrhage (SAH), which are seconda
Externí odkaz:
https://doaj.org/article/1133d0118fdc4e3fb66a795f7ac73488
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
Determining the age and sources of stream water is critical for understanding the watershed hydrological processes and biogeochemical cycle. In this study, daily isotope data of rainfall and runoff, as well as continuously monitored conductivity data
Externí odkaz:
https://doaj.org/article/53fa45b4c58b4a2bad614fc41580c80e
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Autor:
Mufeed Arimbrakkunnan, Pawan K Garg, Pushpinder S Khera, Binit Sureka, Poonam Elhence, Puneet Pareek, Nishant Kumar Chauhan, Taruna Yadav
Publikováno v:
Lung India, Vol 39, Iss 3, Pp 220-229 (2022)
Context: Lung cancer is the leading cause of cancer-related deaths in the world. Computed tomography perfusion (CTP) parameters can be used to evaluate the vascular flow dynamics of lung tumours. We set out to evaluate the CTP parameters in lung canc
Externí odkaz:
https://doaj.org/article/f2e609b5818041769a5e1050bcc8fb56
Autor:
Ravindra Dwivedi, Christopher Eastoe, John F. Knowles, Jennifer McIntosh, Thomas Meixner, Paul A. Ty Ferre, Rebecca Minor, Greg Barron-Gafford, Nathan Abramson, Michael Stanley, Jon Chorover
Publikováno v:
Frontiers in Water, Vol 4 (2022)
Current understanding of the dynamic and slow flow paths that support streamflow in mountain headwater catchments is inhibited by the lack of long-term hydrogeochemical data and the frequent use of short residence time age tracers. To address this, t
Externí odkaz:
https://doaj.org/article/c9f72ee1b62544f6ab93cd11ff009a22