EEG vs. CAT, PET, and MRI Scans Emotionality and

1
EEG vs. CAT, PET, and MRI Scans

• Emotionality and Psychopathology

2
CAT Scan/CT Scan

• Computed Axial Tomography
• Computed Tomography

3

• Godfrey Newbold Hounsfield introduced the system
  to the public in 1972
• Nobel Prize in 1979
• It looks like a donut
• Made up of a series of X-ray sources and sensors
• Tomogram

4
Process and Procedure

• X-ray Axial view Computer Imaging CAT Scan
• X-ray (digital) Computer Imaging CT scan
• Provides cross-sectional views and images of body
  organs and structures
• Pixel, Radiodensity, Voxel, Windowing
• Contrast Material

5
Uses

• The Head
• Hemorrhaging, cerebrovascular accidents, trauma
• The Abdomen, Pelvis, and Chest
• Cancers, pneumonia, infection
• Barium Sulfate
• The Spine and Bones
• Vertebrae, disc, spinal cord definition, and bone
  density
• Indicator of Osteoporosis

6
Benefits

• Painless procedureother than needing great deal
  of patience
• Alternative to catheters and other guide camera
  options
• A good option for those weary of enclosed spaces
• Usually preferred over MRI, and costs less!!!
• Improved technology has lead to Spiral and
  Helical Scansfaster processes

7
Spiral and Helical Scanners

• Spiral
• Circular Path
• Constant gantry rotation and readings
• Less exposure to radiation
• Faster scan better accuracy when patient must
  hold their breath

8
Potential Risks

• Exposure to Radiation
• Reduced with Spiral Scan
• Reaction to contrast material
• Diabetics
• Isovue
• Pregnant and nursing women should not be exposed

9
Investigating Emotionality and Psychopathology

• Dementia
• Anorexia Nervosa
• Neurological Abnormalities
• Schizophrenia

10
References

• http//ajp.psychiatryonline.org/cgi/content/abstra
  ct/138/6/811
• http//en.wikipedia.org/wiki/Computed_axial_tomogr
  aphy
• http//www.imaginis.com/ct-scan/spiral2.asp
• http//www.medicinenet.com/script/main/hp.asp
• http//www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd
  RetrievedbPubMedlist_uids6146279doptAbstract
  
• http//radiologychannel.net/computerizedtomography
  
• http//www.radiologyinfo.org/en/info.cfm?pgbodyct
  bhcp1
• http//www.slackbooks.com/excerpts/36275/36275.asp