18 апр. 2020 г. · Attenuation generally refers to the process whereby the intensity of a radiation field is reduced due to shielding. What does low attenuation mean? What does 'low attenuation foci' mean in relation to ... Другие результаты с сайта www.quora.com

5 сент. 2024 г. · The amount of attenuation is determined by the density of the imaged tissue, and they are individually assigned a Hounsfield Unit or CT Number.

1 июл. 2024 г. · Attenuation determines what appears bright and dark on a CT image. CT images are shown in a range of grey scale values from black and shades of grey to white.

The CT attenuation value is defined as the radiodensity of each material and is expressed in HUs, in which the radiodensity of distilled water at the standard ...

The attenuated sum (E:) occurs after the initial ray No passes through a set of voxels which in turn becomes No and can written as E: ...

Another descriptive term that we commonly use in CT reports refers to the attenuation of tissues, which is basically the same thing as density – dense ...

Areas of high attenuation (visually as opaque as bony structures) in an abnormality on CT scans can be an important clue to the correct diagnosis.

The combination of SPECT and CT provides the capability for accurate attenuation correction of measured radiopharmaceutical distributions.

The density of the tissue is in proportion to the attenuation of the x-rays which pass through. Tissues like air and water have little attenuation and are ...