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Hounsfield Units for Relative Densities of Various Substances

Created: 11/9/2006
Updated: 11/9/2006

 
Hounsfield Units for Relative Densities of Various Substances

Substance                      Hounsfield Unit
Air                                 -1000
Fat                                 -50
Water                              0
Soft tissue (eg muscle)    +40
Calculus                         +100 to +400
Bone                              +1000

Hounsfield units = units of x-ray attenuation used in computed tomographic scanning. Each pixel is assigned a value on a scale from -1,000 to +1,000
ArticleDate:20060911
SiteSection: Article
 
   
    
                                            



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