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

BMC Medical Imaging

Table 3 Measurements of the longest diameter of solid nodules and GGNs under different scanning combinations

Tube voltage	Tube current	8 mm	10 mm	12 mm	8 mm	10 mm	12 mm	10 mm	12 mm
Tube voltage	Tube current	100HU	100HU	100HU	-630HU	-630HU	-630HU	-800HU	-800HU
80 kVp		7.97	9.75	12.05	7.84	9.63	11.84	9.63	11.59
100 kVp	100 mA	7.86	10.39	12.02	7.93	9.67	12.03	9.69	11.53
120 kVp		8.01	9.98	12.45	8.41	9.61	11.4	9.19	11.3
80 kVp		7.81	10	12.01	8.48	9.6	11.35	10.01	12.16
100 kVp	140 mA	7.98	10.49	11.43	8.22	8.95	11.24	9.49	11.93
120 kVp		7.46	10.12	12.4	8.07	9.05	10.77	10.2	11.47
80 kVp		7.92	9.9	12.21	8.12	9.7	11.93	9.23	11.73
100 kVp	200 mA	8.09	10.34	11.66	8.41	9.8	11.84	9.82	12.5
120 kVp		8.43	10.02	11.56	8.1	9.46	11.56	9.56	11.27

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

ISSN: 1471-2342