The phrase "attenuation value" is correct and usable in written English.
It is typically used in scientific or technical contexts to refer to the measure of reduction in strength or intensity of a signal, wave, or beam as it travels through a medium.
Example: "The attenuation value of the fiber optic cable determines how much signal loss occurs over long distances."
Alternatives: "signal loss measurement" or "reduction factor".
Each class is then assigned a fixed attenuation value.
Acute haematoma has a higher attenuation value than renal parenchyma on unenhanced CT imaging (Fig. 4a) and a lower attenuation value on contrast-enhanced imaging (Fig. 4b).
Note the high attenuation value of the lesion compared with muscular tissue.
The transparency is computed based on the transfer-function, which assigns colour and opacity to each attenuation value.
To obtain a smaller attenuation value due to the introduction of the plastic pipe, smaller thicknesses can be used.
Referring to the frame with maximum attenuation and visualizing the attenuation value positioning exactly on the lesion marker 7.
d This 18FDG PET-CT fusion image reveals high metabolic activity in the lesion Table 4 Results of the quantitative analysis Parameters Mean value ± standard deviation Longest dimension 8.05 ± 4.3 cm Volume 210.8 ± 308 cm3 Attenuation value in the unenhanced scan 39.1 ± 5.9 HU Attenuation value in the arterial-pancreatic phase 60.6 ± 10 HU Attenuation value in the portal-venous phase 71.4 ± 8.7 HU.
Significant change in attenuation value is observed for same liquid water content due to change in temperature and accordingly a suitable relationship is obtained for the present location.
For each patient, the analysis of the coronary artery tree was undertaken only if the attenuation value within all proximal coronary segments was ≥200 HU.
The CT identified the presence of a pericardial fluid collection (approximate Hounsfield attenuation value of 40) and fat stranding within the epicardial fat.
Additionally, the mean attenuation value of a representative spherical volume-of-interest (VOI) in the right forearm (diameter: 20 mm) was determined.
