Purpose & Method
  Method 
  Serial two-dimensional imaging using a medical and industrial
  X-ray CT scanner 
  Reconstruction of three-dimensional shape of cavities
  from two-dimensional CT images 
  Visualization, size calculation, and fitting ellipsoids
  to reconstructed cavities by computer programs
  
  Purpose 
  to clarify meso- and microscopic structures of pores
  and fractures in the geothermal reservoir