Final answer:
The optimal CT window settings for detecting liver abnormalities is WW = 150, WL = 50, as a lower window width enhances the contrast necessary for detailed examination of soft tissues such as the liver.
Step-by-step explanation:
The question pertains to the optimal window settings for visualizing abnormalities in the liver using CT imaging. The settings of window width (WW) and window level (WL) are crucial in CT imaging for enhancing the visibility of different tissues. In this context, WW = 150, WL = 50 is the most appropriate setting for liver imaging. A lower window width allows for a more detailed examination of soft tissues by increasing contrast, which is essential for detecting liver abnormalities. Settings like WW = 2000, WL = -400 and WW = 2000, WL = 300 are typically used for looking at bones or lungs where high contrast is not as critical.