Assessing the effect of scanning parameter on the size and density of pulmonary nodules: a phantom study

BMC Medical Imaging

Table 4 Measured mean HU value and standard deviation of solid nodules (Mean ± SD)

Tube voltage	Tube current	8 mm	10 mm	12 mm
Tube voltage	Tube current	100HU	100HU	100HU
80 kVp		110.27 ± 39.53	109.50 ± 28.25	112.19 ± 22.99
100 kVp	100 mA	88.76 ± 13.97	97.61 ± 21.34	101.68 ± 18.02
120 kVp		95.23 ± 9.93	87.67 ± 15.59	93.60 ± 13.96
80 kVp		107.84 ± 26.47	106.94 ± 26.42	107.83 ± 22.63
100 kVp	140 mA	100.00 ± 12.55	93.16 ± 15.71	101.13 ± 14.90
120 kVp		95.48 ± 9.39	86.35 ± 14.75	94.41 ± 11.09
80 kVp		110.24 ± 16.85	101.42 ± 23.19	111.86 ± 17.18
100 kVp	200 mA	96.50 ± 10.69	94.97 ± 12.45	99.83 ± 13.41
120 kVp		95.57 ± 5.29	84.95 ± 12.86	92.82 ± 10.58

Note: Bolded values indicate that the nodule CT value of the measured image for that scan condition is closest to the nodule CT value set by the model

ISSN: 1471-2342