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Calculation formula of each parameter.
| Parameters | Full name | Formula |
|---|---|---|
| NICAP | Normalized iodine concentration at arterial phase | IClesion/ICaorta at arterial phase |
| NICPP | Normalized iodine concentration at portal venous phase | IClesion/ICaorta at portal venous phase |
| ICD | Iodine concentration difference | IC arterial phase − IC venous phase |
| AIF | Arterial iodine fraction | IC arterial phase/IC venous phase |
| λHu | The slope of the spectral Hounsfield unit curve | (HU40kev − HU70kev)/30) at arterial phase |
