Hounsfield units

**Hounsfield Units**

Hounsfield units (HU) are a quantitative scale used in computed tomography (CT) imaging to measure radiodensity. Named after Sir Godfrey Hounsfield, the pioneer of CT scanning, this unit helps differentiate various tissues based on their ability to absorb X-rays. The scale ranges from -1000 HU (representing air) to values above +1000 HU (indicating dense bone or metal). Understanding Hounsfield units is essential for accurately interpreting CT images, diagnosing medical conditions, and planning treatments. This tag covers topics related to CT imaging, radiodensity measurement, tissue characterization, and diagnostic radiology.