system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Hounsfield units depends on -
assistant
The correct answer is  Hounsfield units are used to measure the X ray attenuation in CT scan. Depends on absorption/attenuation coefficient. Water is assigned a HU value of 0.