Radiology In computed tomography (CT) the attenuation value are measured in hounsefield units (HU). An attenuation value of ‘0’ (zero) HV corresponds to – A Water B Very dense bone structure C AIR D Fat 💡 Explanation In computed tomography (CT) the attenuation value are measured in hounsefield units (HU). An attenuation value of '0' (zero) HV corresponds to - ✓ Correct Answer: A. Water