#tomography__imaging  (medicine) obtaining pictures of the interior of the body
  supertype:  #pictorial_representation__pictorialrepresentation__picturing  visual representation as by photography or painting
  subtype:  #X-raying__X-radiation  obtaining images by the use of X rays
     subtype:  #computed_tomography__CT__computerized_axial_tomography__computed_axial_tomography__CAT  a method of examining body organs by scanning them with X rays and using a computer to construct an image
  subtype:  #sonography__ultrasonography  using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth
  subtype:  #positron_emission_tomography__PET  using a computerized radiographic technique to examine the metabolic activity in various tissues (especially in the brain)
  subtype:  #magnetic_resonance_imaging__MRI  the use of nuclear magnetic resonance of protons to produce proton density images
     subtype:  #functional_magnetic_resonance_imaging__fMRI  a form of magnetic resonance imaging of the brain that registers blood flow to functioning areas of the brain
  subtype:  #radioscopy__radiology  examination of the inner structure of opaque objects using X rays or other penetrating radiation
     subtype:  #fluoroscopy  examination of body structures using a fluoroscope

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