K-space trajectories
   
K-space trajectories
   
K空间轨迹
   
K-Raum Trajektorie
  Attenuation coefficient
When a beam of ionising radiation is incident on a material, a number of interaction processes can occur that remove energy from the beam (attenuation).  The fraction of energy removed can be related to the distance or length travelled through the material, the mass or density of the material, or the atomic density of the material.  The terms used to describe this lost fraction are, respectively, the linear attenuation coefficient, mass attenuation coefficient, and atomic attenuation coefficient...
 
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