What does houndsfield mean?

Houndsfield is a person's last name. You may be talking about the British scientist G. Houndsfield, who won the Nobel Prize in Physics in 1979 and is the inventor of the CT scanner which is widely used in the medical field all over the world.

Hounsfield is also the density unit of CT scanning images.

Using computer image reconstruction technology, CT machine displays the material information with different densities on a specific layer as a high-resolution digital image.

Professor Hounsfield, the inventor of CT machine, gave the concept of CT number, and the unit name of CT number was Hu (Hounsfield unit). 1000 is the scale factor of HU. According to this definition, the CT number of air is-1000(HU), and that of pure water is 0(HU). The CT value of a substance essentially reflects the density of the substance, that is, the higher the CT value of the substance, the higher the density.

brief introduction

CT is "computed tomography" or "computed tomography". The abbreviation of CT is the biggest breakthrough of X-ray diagnosis since Roentgen discovered X-ray in 1895, which is the product of the combination of computer control technology and X-ray inspection photography technology.

CT was successfully developed by British physicist hounsfield in 197 1 year. It was first used for the diagnosis of brain diseases, and then extended to general examination in 1976. This is a great revolution of X-ray in radiology. China also introduced this new technology in the late 1970s. In a short period of 30 years, thousands of various types of CT machines have been installed in hospitals all over the country and even in counties and townships, and CT examination has quickly spread all over the country, becoming an indispensable equipment for medical diagnosis.