The phrase "attenuation of water" is correct and usable in written English.
It can be used in contexts related to environmental science, hydrology, or engineering, particularly when discussing the reduction in intensity or concentration of water, such as in filtration or treatment processes.
Example: "The attenuation of water contaminants is crucial for ensuring safe drinking water."
Alternatives: "reduction of water" or "diminution of water".
Several products were found to selectively increase the attenuation of water or SOM.
As the energy of photons increases, the linear attenuation of water decreases thus the intensity of the higher photopeak (208 keV) is less affected.
To address the first objective, we introduce a new thermal Damköhler number, DaT, which is the ratio between the median residence time of stream water and the time scale of daily amplitude attenuation of water temperature within the hyporheic zone.
A study by Ziegler et al. found that the MR-derived attenuation map of the NEMA image quality phantom, obtained from the Siemens Biograph mMR PET/MRI scanner, only captured the photon attenuation of water inside the phantom but failed to capture the plastic housing of the phantom itself, which significantly degraded both the quantitative accuracy and background variability of the PET images.
Lesions that may manifest the attenuation of water include pericardial and thymic cysts, abscesses, and lymphangiomas, as well as neurogenic and germ cell tumors.
Although the CC usually shows the attenuation of water (average ∼5 HU), the attenuation may be elevated due to increased protein content or after the injection of intravenous contrast (particularly in patients with renal failure).
The CT number characterizing each individual voxel is expressed in HU and is defined as the attenuation coefficient of the radiogram by the material being studied minus the attenuation coefficient of water divided by the attenuation coefficient of water.
In a voxel with average linear attenuation coefficient μ x, the corresponding HU value is given by: HU = 1000 × (μ x - μwater)/μwater - μair where μwater and μair are the linear attenuation coefficients of water and air; i.e., attenuation values expressed in HU are relative to the attenuation of radiation in water.
Fig. 1 Mass attenuation spectra of water and gadolinium, with a line drawn at 511 keV showing the similar mass attenuation coefficients.
where μ a (0.17 cm -1 for 140 keV) is the linear attenuation coefficient of accrylic, μ w (0.15 cm -1 for 140 keV) is the linear attenuation coefficient of water, h is the height of the column for each hole, and l is the height of the background columns.
Linear attenuation coefficients of water were assigned to the whole phantom content including phantom liquid and glass inserts, despite of higher attenuation of the glass material of the spheres.
