Final answer:
The linear attenuation coefficient of water in CT scanning is a property of water and is independent of the scanning parameters such as mAs.
Step-by-step explanation:
The linear attenuation coefficient of water in CT scanning is a measure of how much the intensity of the X-ray beam decreases as it passes through water. This coefficient is a physical property of the material being scanned and is therefore independent of the scanning parameters such as milliampere-seconds (mAs), which determine the amount of X-ray dose used in the scan. In essence, the linear attenuation coefficient depends on the density and composition of the material, not on the X-ray exposure settings.