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cerebral blood volume
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BMO_0000110 |
[Cerebral blood volume (CBV) is one of the parameters generated by perfusion techniques (CT perfusion and MR perfusion). CBV is defined as the volume of blood in a given amount of brain tissue, most commonly milliliters of blood per 100 g of brain tissue.] |
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tau deposition
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BMO_0000121 |
[Tau deposition refers to the accumulation of abnormal tau protein aggregates in the brain, which is a characteristic feature of several neurodegenerative disorders, including Alzheimer's disease (AD), frontotemporal dementia (FTD), and certain forms of Parkinson's disease (PD), among others.
In neuroimaging, techniques such as positron emission tomography (PET) using radioligands targeting tau can visualize and quantify tau deposition in the brain. These imaging methods enable researchers and clinicians to detect the presence of abnormal tau aggregates and assess their distribution and severity.] |
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Thing
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Thing |
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mean diffusivity
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BMO_0000122 |
[Mean diffusivity (MD) is a metric derived from diffusion-weighted magnetic resonance imaging (DW-MRI) data. It quantifies the average magnitude of water molecule diffusion within a particular tissue or region of interest.
MD is calculated based on the diffusion tensor, which characterizes the rate and directionality of water diffusion in tissue. Unlike fractional anisotropy (FA), which measures the degree of diffusion directionality, MD represents the overall magnitude of diffusion regardless of direction.] |
