Diffusion-weighted magnetic resonance imaging
by water
Osmosis is specifically the movement of water molecules across a selectively permeable membrane. It is not involved in the diffusion of other substances like ions or solutes.
The apparent diffusion coefficient (ADC) is a quantitative measure that reflects the diffusion of water molecules in tissues, commonly used in diffusion-weighted magnetic resonance imaging (DWI). It provides information about tissue microstructure and cellularity by measuring how freely water molecules move within cells and extracellular space. Changes in ADC values can indicate conditions such as inflammation, ischemia, or tumor growth.
an MRI
an MRI
An image can be constructed because the protons in different tissues return to their equilibrium state at different rates. By changing the parameters on the scanner this effect is used to create contrast between different types of body tissue or between other properties, as in fMRI and diffusion MRI.
If the MRI technologist positions you with your leg going into the magnet (the MRI machine) then your head would be out of it. Call the facility where you are scheduled to have the MRI and ask to speak with the MRI technologist and they can fully explain to you exactly how you will be positioned.
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No. It is not a treatment it is a scan. An MRI is a Magnetic Resonance Imaging. MRI are used for imaging tissues.
manly in the middle of the mri
MRI can damage cells