Sentence examples for mean attenuation of from inspiring English sources

(a) 120-kVp routine-diagnostic (conventional) CT image through the upper abdomen shows a well-defined hypoattenuating lesion in the left kidney (arrow), which has a mean attenuation of 49.5 HU, which is too high for a simple cyst.

The Bland-Altman plots also demonstrate a better agreement between the mean attenuation of the brain parenchyma in the standard LD and the HYPR-LR post-processed ULD images compared to LD and ULD.

The software then automatically calculates the area enclosed by the perimeter and the mean attenuation of this area in HU.

Mean attenuation of the entire residual masses was assessed by direct measurements of Hounsfield units within the VOI.

Three types of plaques were determined using the following classification proposed by Ballotta et al. [ 9]: (1) noncalcified plaques, i.e., plaques with a density <50 HU; (2) calcified plaques, i.e., plaques with a mean attenuation of 130 HU or greater; and (3) mixed plaques, i.e., plaques with a mean attenuation of 50-129 HU.

A combined T/L SUVmax ratio of >3.1 and a mean attenuation of >10 HU had a sensitivity of 97.3 % and a specificity of 86.2 %, a combined T/L SUVmax ratio of >1.0 and a mean attenuation of >10 HU had a sensitivity of 97.3 % and a specificity of 74.1 %.

In this study, the mean attenuations of type 1 and 2 PRCCs were similar in unenhanced phase (38.9 ± 6.3 versus 40.2 ± 6.8 HU, P = 0.44), which was consistent with previous studies [ 16].

There were no significant differences among the mean attenuations of pleomorphic adenomas, Warthin's tumours and malignant tumours on non-enhanced CT (P = 0.047) and the fourth CT (P = 0.21).

Then, the tumour attenuation assessments of all lesions were combined and a mean attenuation on CT was computed for each patient.

ROIo is the mean attenuation for the organ of interest, ROIsf is the mean attenuation for the subcutaneous fat, and SDn is the mean image noise.

The use of sharper convolution filters produces an increase in the mean attenuation value of the calcified component of plaque.