Anatomy and Medical Technology

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Anatomy and Technology

• M.R.I
• P.E.T. Scan
• CT Scan
• Underlined Points is material you'll need
  to discuss on Test.
• Anatomy Standards NSTA Science and Technology
• Keith Tucker
• West Forsyth H.S.

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P.E.T. Scan Positron Emission Tomography

• Use Radioisotopes to detect cellular function of
  tissues.
• Commonly used is Tagged glucose I.V ...levels
  of glucose use (health) in study tissue can be
  detected by amount of radiation emitted.
• -Soft Tissue Targets Brain, Liver, heart,
  Tumors
• Radioisotopes radioactively decaying elements
• Radioisotope- unstable element that emits
  radiation as it decays.
• Ex. Iodine-131 used in thyroid function scans.

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Brain activity during depression (left) or normal
brain activity (right). Decreased areas of bright
white/yellow shows decreased brain activity due
to depression.
http//www.mayoclinic.com/health/medical/IM00357
http//www.riversideonline.com/health_reference/Ar
ticles/CA00052.cfm
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P.E.T. Scan Positron Emission Tomography
Tumor fluoresces much more than surrounding
tissue. Fast growing cancer cells use more
tagged glucose than other tissue.
http//www.aboutcancer.com/pet_scan.htm
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MRI- Magnetic Resonance Imaging

• No radiation Computers analyze body structure
  with use of a Magnetic field
• Most detailed
• FYI...Magnetic Field induces alignment of poles
  in molecules of tissues Differing tissues will
  have different strength and rate of return to
  original state....allowing great contrast of all
  tissue types.

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MRI - Magnetic Resonance Imaging
http//en.wikipedia.org/wiki/Magnetic_resonance_im
aging
http//www.photosfan.com/mri/
http//www.ct-scan-info.com/head-ct.html
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CT Scan (or CAT Scan)
http//www.radiologyinfo.org/en/photocat/gallery3.
cfm?pid1imagephilip25.jpgpgbodyct
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...aka...CT Computer Tomography
X-rays combined w/computers (computer enhances
image...better than plain x-ray film and can see
tissue/organs Inexpensive Quickly
Scan...minutes Good in emergency
situations! Radioactive dye(contrast) can be
used..see blood vessels.... When may this be
useful? What emergency occurrence?
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CT Scan (Computer Tomography)
http//www.ct-scan-info.com/head-ct.html
http//hybrid-medical.com/default.aspx