Preliminary report on harmonization of features extraction process using the ComBat tool in the multi-center “Blue Sky Radiomics” study on stage III unresectable NSCLC

Insights into Imaging

Table 1 Summary of imaging acquisition parameters and values

Acquisition parameters	Value
Scanner manufacturer	Philips, Siemens, Toshiba, GE
kVp	100, 120, 130, 140
Convolution kernel	B^a,B10f^b,B20f^b,B30f^b,B31f^b, B31s^b,B40f^b, FC08^c, FC17^c, STANDARD^d
Exposure time (ms)	350, 500, 600, 698, 1000
Tube current (mA)	From 56 to 581
Contrast agents	Iobitridol, Iomeprol
Slice thickness (mm)	0.5, 1, 1.25, 1.5, 2, 2.5, 3

^aPhilips; ^bSiemens; ^cToshiba; ^dG.E; ^eNon-ionic CA, market under the trade name Xenetix (Guerbert); ^fmonomeric and water-soluble non-ionic, injectable iodinated contrast medium solution (Bracco)