Table 1.

CT image acquisition parameter distribution over the training set and test set.

	Training set	Test set
Patients	77	76
Scanner
GE	6	4
Siemens	43	45
Philips	23	21
Toshiba	5	6
Thickness
1	1	2
1.5	2	0
2	10	12
2.5	0	2
3	10	11
3.2	2	0
5	42	49
Kernel
GE Med
Standard	6	4
Siemens
B20f	1	2
B30f	0	0
B35f	5	7
B35s	0	0
B40f	13	10
B41f	0	0
B50f	10	7
B60f	3	1
B70f	14	18
Philips
A	0	0
B	0	0
C	11	8
D	12	13
E	0	0
L	0	0
Toshiba
FC02	0	0
FC08	5	6
FC10	0	0
kVp
100	34	31
110	23	27
120	20	18