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Medical Computing


MRI, medical diagnostic technique that creates images of the body using the ... [8] Medical Dictionary: Magnetic resonance imaging. Retrieved March 31, 2006 ... – PowerPoint PPT presentation

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Title: Medical Computing

Medical Computing
  • By Tuyen T Nguyen
  • University of Wisconsin-Platteville
  • Spring 2006

  • Medical Computing in the US in the past 30 years.
  • Remarkable revolution
  • Result obtained from technology evolution are
  • No surgery on every case
  • Noninvasive procedures
  • Required less time
  • More accurate results
  • Cost less

  • The use of computer technology such as
  • CAT
  • Ultrasound
  • MRI
  • Pacemaker
  • Photoshop CS2
  • Nuclear magnetic

History of Computer Imaging
  • Early computer graphics (1960s-1970s) were
    based on devices that drew vectors (straight
    lines) and that was all.
  • Perhaps the most important advantage relevant to
    medical applications is that the interior of the
    objects are accessible to the viewer
  • Given surgeon a much better view

AbioCor Artificial Heart
  • The AbioCor Implant able replacement heart is the
    first completely self-contained artificial heart
  • It is expected to at least double the life
    expectancy of heart patients compare without a
    heart implant
  • On July 2, 2001 Dr. William Devries at Jewish
    Hospital in Louisville, Kentucky performed a
    first artificial heart transplant.

Jarvik Artificial Heart
  • Dr. William Devries implanted the Jarvik-7 into
    several patients.
  • One patient implanted Jarvik-7 survived 620 days.
  • Artificial hearts are used only on a temporary
    basis until a human heart becomes available.

Artificial Heart Continue
  • Internal Controller Unit This small electronic
    device is implanted in the patients abdominal
    wall. It monitors and controls the pumping speed
    of the heart.

Sensorized Artificial Heart
  • Next Generation Artificial Heart
  • With noninvasive sensors to realize the safety
    treatment and effective control for the patients.

Sensorized Artificial Heart
  • Tsukuba Bio-Telemetry System
  • Observe the condition of the patients
  • Driving condition of artificial heart from a
    remote place on-line.

  • A basic ultrasound machine has the following
  • - transducer probe
  • - central processing unit (CPU)
  • - transducer pulse controls
  • - display
  • - keyboard/cursor
  • - disk storage device
  • - printer

  • Central processing unit (CPU)- computer that does
    all of the calculations and contains the
    electrical power supplies for itself and the
    transducer probe.
  • The CPU is the brain of the ultrasound machine.
    It is a computer that contains the
    microprocessor, memory, amplifiers and power
    supplies for the microprocessor and transducer

  • The machine calculates the distance from the
    probe to the tissue or organ (boundaries) using
    the speed of sound in tissue and the time of each
    echos return.

  • Ultrasound is use to check on the developing baby
    or determine the due date.
  • If one is having problems with blood circulation
    in a limb or heart, a Doppler ultrasound can
    check on the blood flow.
  • Ultrasound has been a popular medical imaging
    technique for many years.

3D Ultrasound Imaging
  • Ultrasound machines capable of three-dimensional
    imaging have been developed.
  • In these machines, several two-dimensional
    images are acquired by moving the probes across
    the body surface or rotating inserted probes.
  • The two-dimensional scans are then combined by
    specialized computer software to form 3D images.

  • X-rays are basically the same thing as visible
    light rays. Both are wavelike forms of
    electromagnetic energy carried by particles
    called photons.
  • The difference between X-rays and visible light
    rays is the energy level of the individual

X-rays Continue
  • X-rays let doctors peer inside a patient without
    any surgery at all.
  • Computer aided detection, or CAD, takes either an
    x-ray or digital mammogram image and with the
    press of a button marks areas of concern like
    calcifications subtle abnormalities that a
    radiologist may have missed.

Computerized Axial Topography Scan
  • CAT scan takes the idea of conventional x-ray
    imaging to a new level. Instead of finding the
    outline of bones and organs, a CAT scan machine
    forms a full three-dimensional computer model of
    a patients insides.
  • Doctors can even examine the body one narrow
    slice at a time to pinpoint specific areas.

CAT Continue
  • In a CAT scan machine, the x-ray beam moves all
    around the patient, scanning from hundreds of
    different angles.
  • The computer takes all this information and
    puts together a 3-D image of the body.

CAT Continue
  • This figure shows a scanned liver slice.
  • Since they examine the body slice by slice, from
    all angles, CAT scans are much more comprehensive
    than conventional x-rays.

Magnetic Resonance Image (MRI) Scan
  • MRI, medical diagnostic technique that creates
    images of the body using the principles of
    nuclear magnetic resonance.
  • MRI can generate thin-section images of any part
    of the body including the heart, arteries, and
    veins from any angle and direction, without
    surgical invasion and in a relatively short
    period of time.

MRI Scan
  • The main magnet immerses the patient in a stable
    and very intense magnetic field, and the gradient
    magnets create a variable field.
  • The rest of an MRI system consists of a very
    powerful computer system, some equipment that
    allows us to transmit RF (radio frequency) pulses
    into the patients body while they are in the
    scanner, and many order secondary components.

  • This image set is comparing a young individual
    (left) with an athletic male in his 80s (center)
    and with a person of similar age having
    Alzheimers disease (right), all imaged at the
    same level.

Computer Technology in Endoscopy
  • The endoscope has revolutionized the field of
    gastroenterology. Through it, doctor can
    directly examine almost any part of the
    intestinal tract.
  • Biopsies can also be obtained
  • Here is the picture of the normal stomach.

  • A thin, flexible, lighted tube called an
    endoscope will insert through the mouth or
  • The endoscope transmits an image of the inside
    of the esophagus, stomach, and duodenum, so the
    physician can examine the lining of these organs.

  • The scope also blows air into the stomach this
    expands the folds of tissue and makes it easier
    for the physician to examine the stomach.
  • The physician can see abnormalities, like
    inflammation or bleeding, through the endoscope
    that dont show up well on X-rays.
  • The physician can also insert instruments into
    the scope to treat bleeding abnormalities or
    remove samples of tissue (biopsy) for further

  • Pacemakers are prescribed for people of all ages
    whose hearts beat too slowly.
  • Pacemakers detect the slow heart rate and send
    electrical impulses to the heart to stimulate the
    heart muscle to beat faster.
  • Well over 2 million pacemakers have been
    implanted worldwide since 1960.

System for Programming and Monitoring Implanted
  • This specialized computer system is used to
    communicate with implanted devices such as
    pacemakers and defibrillators through the skin.
  • Using this computer, the doctor can read
    information from the devices memory to determine
    if abnormal cardiac episodes occurred, such as
    cardiac arrest.

Monitoring Implanted Devices
  • To interact with a pacemaker or defibulator
    device, a doctor places a magnetic wand over the
    device. This allow the system to
  • - Receive information from the device.
    Based on this information, the doctor or nurse
    may want to change the therapy.
  • - Send instructions to the device. When the
    therapy needs to change, the doctor can send the
    new instructions to the device without any

Monitoring Implanted Devices
  • The use of the computer system represents a big
    step in using remote and internet-based
    technology in the management of cardiac patients.
  • The remote viewing capability allows clinicians
    to access real-time clinical expertise at a
    different location quickly over standard
    telephone lines.
  • The clinical experts are able to see the exact
    data being seen on the computer, thus increasing
    efficiency and facilitating improved consulting
    and troubleshooting sessions.

Nuclear magnetic resonance technology
  • Was first described by Felix Bloch and Edward
    Mills Purcell in 1946. Both shared the Nobel
    Prize in physics in 1952 for their discovery.
  • Uses high magnetic fields and ratio-frequency
    pulses to manipulate the spin states of nuclei,
    and reflect the position of nucleic within the

Nuclear Magnetic Continue
  • Most famous use is in magnetic resonance imaging
    for medical diagnosis.
  • Provides anatomical definition of normal and
    abnormal tissues.
  • Also use to diagnostic imaging of the breast and
    regions of the abdomen.

Nuclear Magnetic Continue
  • In several respects, NMR spectroscopy offers a
    technique complementary to X-ray crystallography
    and neutron diffraction.
  • An important consideration is that NMR structures
    typically are obtained from proteins in solution,
    with no requirement that the protein be

Adobe Photoshop CS2
  • What is Adobe Photoshop CS2?
  • The professional image-editing
  • Can achieve an amazing result

Adobe Photoshop CS2
  • System requirement
  • Intel Xeon
  • Intel Centino
  • Pentium III or 4 processor
  • 320 MB of RAM
  • 650 of available hard-disk space

Adobe Photoshop CS2
  • Who need this?
  • Anyone who want a professional result when
    creating, editing, and retouching a processing
    digital images
  • Wisely use in plastic surgery image!

Adobe Photoshop CS2
  • Who want to look 10 years younger virtually? May
    be 5 years?
  • You can use Adobe Photoshop to make you look good
    AND feel good!

Adobe Photoshop CS2
  • Limitation
  • Only in 2D for graphics and photos
  • Can be in 3D with text
  • Can do many real cool things

  • Computer technology has penetrates all aspect of
    human life internet access to medical to
    military control defense system.
  • Advance technology from networking to computer
    image provide the great tools for medical field.
  • Offer great support in the diagnostic stage and
    draw conclusion in a short period of time
  • It truly contributes a quality decision analysis
    in healthcare system.

  • 1Andrew Millman, Nicholas Lee, Andrew Brooke.
    BMJ 1995 311800-802(23
  • September). ABC of Medical Computing Computers
    in General Practices. Retrieved March 31, 2006,
  • http//
  • 2 Advantech- ePlatform Services in Medical
    Computing. Retrieved April 1, 2006 from
  • 3 Hadjiyski, L. Ph.D., Sahiner, B. Ph.D., Chan,
    H. Ph.D., Bogot, N. M.D., Cascade, P. M.D.,
    Kazerooni, E. M.D. (2004, November 29). New
    computer-aided diagnosis (CAD) methods for
    cancer. News-Medical.Net. Retrieved April 1,
    2006, from
  • http//
  • 4 Photoshop Tutorials Absolute Cross.
    Retrieved April 1, 2006 from
  • http//
  • 5 Nuclear magnetic resonance Wikipedia, the
    free encyclopeda. Retrieved April 1, 2006 from
  • 6 Nuclear Magnetic Resonance. Retrieved April
    1, 2006 from
  • http//

  • 8 Medical Dictionary Magnetic resonance
    imaging. Retrieved March 31, 2006
  • http//
  • 9 Article Coronary Artery Disease Screening
    Tests. Retrieved April 1, 2006
  • http//
  • 10 Andy Anderson. Steve Johnson. Perspection.
    Inc. Adobe Photoshop CS
  • 11 McGraw-Hill - Concise Encyclopedia of
  • 12 Eric J. Light President. The Internal
    Medical Spa Association. Retrieved April 1, 2006
  • 13 How stuff works. Retrieved April 2, 2006

Thank you for listening
  • Any Questions?