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Comparison of fluid and solute flow in peripheral tissues and brain. The source of fluid in peripheral tissue is the porous capillaries, which are permeable to plasma and globular proteins like albumin (gray circles). In addition, endothelial cells express aquaporin-1 (AQP1) water channels.
- “Dazed and diffused”: making sense of diffusion abnormalities in ...
Diffusion abnormalities seen on diffusion-weighted MRI can...
- “Dazed and diffused”: making sense of diffusion abnormalities in ...
2 gru 2014 · The comparison of experiment and theory provides two tests of whether or not solute movement is by diffusion by asking: “Do the data fit the shape of the theoretical curve?” and “Is the value calculated for the diffusion constant the same for different times?”
12 lis 2013 · Diffusion abnormalities seen on diffusion-weighted MRI can play an important role in the diagnosis and follow-up of a broad spectrum of neurological diseases. A thorough understanding of the appearance and significance of these abnormalities is critical in patient management.
1 cze 2003 · During diffusion times of about 50 ms, water molecules move in the brain over distances of around 10 μm on average, bouncing off, crossing or interacting with many tissue components, such as...
10 lip 2024 · Cerebral edema refers to a number of interconnected processes which result in abnormal shifts of water across various compartments of the brain parenchyma. It is observed in the majority of injuries involving the central nervous system 5. It has traditionally been broadly divided into vasogenic cerebral edema and cytotoxic cerebral edema, the ...
20 mar 2023 · The fundamental idea behind diffusion-weighted imaging is the attenuation of T2* signal based on how easily water molecules are able to diffuse in that region. The more easily water can diffuse (i.e. the further a water molecule can move around during the sequence) the less initial T2* signal will remain.
16 wrz 2021 · We developed a lumped parameter model which includes a representation of cerebral ISF flow within brain tissue and its interactions with CSF flow and cerebral blood flow (CBF).
