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. 2020 Jan 17;2020:5407936. doi: 10.1155/2020/5407936

Table 4.

Primary and secondary outcomes for all groups on a per-patient and per-segment level.

Parameter Group BW Group LBW Group CO p value BW vs. LBW p value BW vs. CO p value LBW vs. CO
No. of patients n = 112 n = 108 n = 107
Image quality parameters per patient
Attenuation (HU) 423 ± 60 404 ± 61 413 ± 63 0.024 0.211 0.333
Scans 325–500HU (%) 83.9 84.3 86.9 0.947 0.532 0.579
Scans ≥325HU (%) 95.5 89.8 95.3 0.102 0.941 0.124
Noise 39 ± 8 39 ± 8 40 ± 9 0.844 0.332 0.451
CNR 14 ± 3 14 ± 3 14 ± 3 0.313 0.094 0.530
SNR 12 ± 3 11 ± 3 12 ± 5 0.117 0.970 0.265
Good-excellent image quality (%) 94.6 86.1 90.7 0.031 0.257 0.299

No. of segments n = 1.599 n = 1.556 n = 1.523
Image quality parameters per segment
Scans 325–500HU (%) 67.4 67.4 66.5 1.000 0.618 0.621
Scans ≥325HU (%) 90.7 87.2 88.6 0.002 0.061 0.224
Good-excellent image quality (%) 82.9 75.1 78.6 <0.001 0.003 0.023

Note. Values are presented as mean ± standard deviation. BW = body weight; LBW = lean body weight; CO = cardiac output; HU= Hounsfield units; CNR = contrast-to-noise ratio; SNR = signal-to-noise ratio. A significant difference was found between group BW and group LBW. A significant difference was found between group BW and group CO. A significant difference was found between group LBW and group CO.