The Usage of Computer Science in Medical Science

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The Usage of Computer Science in Medical Science

• Especially in Radiography, and file management

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Main points

• Digitalizing
• Analyzing
• Copying
• Storing
• Sharing

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Digitalizing

• A computer helps doctors to digitalize many
  useful data.
• Examples X-Ray , Case History

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Output of the Traditional X-ray Machine

• Use film with silver bromide
• The silver cation in the film are sensitive to
  the X-ray, if those particles get sensitization
  of X-ray, they will be deoxidize to silver
  particles.

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• Those silver particles will condense in the film,
  and display as black in color
• And else silver bromide will be wash away from
  the film, then the film will have its own color,
  which is basic transparent.
• Then the final output formed.

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First X-ray picture (radiograph), taken by
Wilhelm Röntgen, of Albert von Kölliker's hand.
A typical x-ray picture of a chest
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Digitalizing the X-ray Radiography

• Direct Digital Radiography (DDR)
• Computed Radiography (CR)

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Direct Digital Radiography (DDR)

• Use a flat-panel detector as a medium to transfer
  the x-ray signals to the electrical digital
  signals
• Or use the Multi-wire proportional chamber X-ray
  projectional scanning system. Every wire in the
  chamber has a great proportion signal of x-ray,
  the signals have been A/D transferred and then
  send to the CPU to process into the digital image
  .

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Computed Radiography (CR)

• The early CR was developed by Fuji Film, they
  used Imaging Plate (IP) to instead the normal
  film.
• After the IP is exposed by x-ray, they computed
  the picture to digital image.
• This is the most popular way of CR

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A digitalized x-ray image of a head.
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Digitalizing the case history

• It is easy to digitalizing the case history.
• The Word and Excel program in the computers can
  help staffs in a hospital to set up files easily.
• For those old cases, they also could use a
  scanner to digitalize.

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Advantages of digital case history

• Save spaces
• Save natural sources
• Easy to find
• Easy to manage
• Easy to share

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Analyzing

• After the image have been stored, there are some
  particular programs that can help doctors to
  analyze the image.
• Before the usage of computer in the clinic,
  doctors used to use rulers to measure the
  distance of a tumor or other strange things.

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An application of analyzing

• There are examples of the analyzing application
  of computer science in radiography, you can visit
  our webpage for more information about computed
  Tomography (CT) etc.
• http//www.ugrad.cs.ubc.ca/r3s5/page1.html

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Storing Copying

• Once the image have been digitalized, it could be
  stored in the computer.
• It also could be copied for infinite times.
  However, for the traditional film, doctors cannot
  copy them easily.

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Situation without computer

• Before the computer science is used in the
  medical field, once the doctor in a hospital
  cannot solve a problem, he/she has to invite
  other doctors to come over to the hospital from
  other places.
• It takes time and not really efficient.

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Now, we can share easily

• Doctors could send images such as x-ray photos,
  CT photos, case history through the internet.
• For an emergency case, this is really important
  to save a life.
• We save time for both doctors and patients.

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Future.

• Our case history will be displaced by a chip
  which could store our health history from birth
  to death
• A doctor cannot be a qualified doctor without
  computer skills.

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Still, not enough

• There should be more and more specific programs
  written for supporting medical field, such as
  build up models for some specific diseases.
• And so on

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Resources

• www.vghks.gov.tw/ cm/new_page_11.htm
• http//zh.wikipedia.org/wiki/XE5B084E7B79A
• http//www.cqvip.com/asp/qkdh.asp
• www2.cmu.edu.tw/ cmudh/teacher.htm
• Back to Shous homepage
• Back to Siwens homepage