Sentence examples for mean attenuation in from inspiring English sources

The standard deviation of the mean attenuation in the ROI served as an objective measure of noise [34].

CCO was calculated as the ratio of mean attenuation in the coronary ROI over the aorta ROI.

Corrected contrast opacification (CCO) is calculated as the ratio of mean attenuation in the coronary ROI over the ROI in the descending aorta (large white circles).

In each structure, efforts were made to place the ROI in as homogeneous an area as possible, away from blood vessels, fat planes, etc. Mean attenuation in HU and standard deviation of the mean attenuation in the ROI were recorded on CD-CT and LD-CT images reconstructed with FBP, ASiR-40, ASiR-70 and ASiR-90 including 2 mm, 5 mm and 5 mm MIP reformats.

Mean attenuation in pulmonary arteries did not differ significantly among the three protocols performed, however the mean attenuation was 40 50 HU higher for group C compared with A and B. Since group C did not perform a respiratory effort, it could be suggested that lack of deep inspiration and its Valsalva-like hemodynamic consequences are responsible for this greater attenuation.

Inside the ROI, placed in the coronal slice on the case study patient with inversion in only one leg (Figure 2 E,F,G), the mean attenuation value in the Dixon image was 10% lower in the inverted leg ROI (μ = 0.09 versus 0.1 cm−1) while the CT had the same attenuation value in both ROIs (μ = 0.099 cm−1).

The mean attenuation value in the sarcomas was 2-82-8%gher in DWFS (μ = 0.1 cm-1) compared to FullCT (μ = 0.0926-0.098 cm-1) for the voxels not considered bone.

We report the mean attenuation value in the sarcoma and the relative difference of a ROI (30% of max isocontour in the sarcoma) activity values for (A -(B) in reference to (C).

Pearson correlation coefficients were calculated to assess the correlations within all ROIs between the mean attenuation values in the original and the post-processed datasets (LD vs. LD +HYPR, ULD vs. ULD+HYPR), between those in the LD and the ULD+HYPR datasets as well as between those in the LD and the ULD datasets.

Disparity in methodologies limits direct comparison of mean attenuation values reported in different papers.

The AMIDE-dedicated tool was used to obtain the total number of counts and, when needed, the total number of pixels in an ROI on a SPECT image or the mean attenuation coefficient value in an ROI on a CT image.