radiology

• THREE MAJOR TYPES OF IMAGING

  • Magnetic Resonance Imaging (MRI)
  • Ultrasonography
  • X-Ray Technology
• Magnetic Resonance Imaging (MRI)


  Uses a magnet to obtain images of an area of the body
• Ultrasonography


  Uses sound waves to produce a visual images of an area of the body's interior
• 1. X-Ray Technology


  Earliest form of imaging, ranges from black and white images produced by electromagnetic radiation to computer-enhanced images on a computerized axial tomography (CAT)
• Early 20th century, it was discovered and the first images of Inside of a living person were made
• 1. X-rays


  High-energy electromagnetic radiation, energy from the interior of a substance carried by a stream of electrically charged particles
• THREE TYPES OF RADIOACTIVE PARTICLES

  • Gamma Rays
  • Beta Rays
  • Alpha Rays
• Gamma Rays


  Have the most penetrating ability of the three types
• Beta Rays


  Fall somewhere in the middle in penetrating ability
• Alpha Rays


  Have the least penetrating ability
• Nuclear Medicine


  Medical specialty that uses radioactive substance to view or to treat disease
• Radiography


  Production of diagnostic images
• Cineradiography


  Allows a radiologist to view a sequence of images showing how tissues or organs works in an individual
• Imaging


  Production of visual output using x-rays, sound waves, or magnetic fields
• Diagnostic Imaging


  Use of imaging to diagnose problem in the interior of a part of the body without surgery
• Irradiated


  treated with radiation
• Malaise


  General meaning of illness
• PET scan


  Position emission tomography, a series of images that shows the distribution of substances through tissue
• Gamma rays


  Commonly used in radioactive particles with high penetrating ability
• Imaging


  Production of a visual output using x-rays, sound waves, or magnetic fields
• Intracavitary


  Branchytherapy in which the radioactive substance is placed in a cavity near a cancerous lesion
• Ion


  Positively charged particle used to ionize tissue
• Barium


  Contras medium that shows up as white on x-ray
• Brachytherapy


  Implanting of radioactive elements directly into a tumor or tissue
• Cineradiography


  Cine-movement, radiography of tissues or organs in motion
• Diagnostic imaging


  Use of imaging techniques in diagnosing illnesses
• Radiology


  Medical specialty in diagnostic imaging and radiation treatment
• Radionuclide


  Radioactive substance
• Radiopharmaceutical


  Chemical substance containing radioactive material
• Radiosensitive


  Easily affected by radiation
• Ionize


  to destroy cells by changing neutral particles to ions using x-rays
• radiation


  energy carried by a stream of particles from a substance
• fluoroscopy


  x-ray in which the images are projected onto the fluorescent screen
• gray


  unit measure equal to 100 rads
• interstitial therapy


  substance is placed within the tissue or tumor
• iodine


  substance used in radiopharmaceuticals for contrast medium and radiation therapy
• CAT scan


  computerized axial tomography, a scan that shows images as detailed slices of the body/organ
• CT scan

  computed tomography scan
• radioimmunoassay


  in vitro test to determine the amount of drugs or medications left in the body
• radiolucent


  able to easily penetrated by x-rays