Radiation Therapy Through the Years
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Questions and Answers

Which radioactive source was used in the first teletherapy units for radiation therapy?

  • Neutron beam
  • Electron LINAC
  • Cobalt-60 (correct)
  • Betatron
  • Who designed the first electron LINAC for radiation therapy?

  • Glen Seaborg
  • Kerst
  • John Livingood
  • Harold E. Johns (correct)
  • Which unit was used for superficial treatment during the 1930s to 1950s?

  • Cobalt bomb
  • Cyclotron
  • Orthovoltage (correct)
  • Rad
  • Who constructed the betatron, a generator for radiation therapy?

    <p>Kerst</p> Signup and view all the answers

    In what year was the rad adopted as the unit of absorbed dose for any ionizing radiation?

    <p>1960</p> Signup and view all the answers

    Which term was used to describe the computed tomography method before it was known as CAT or CHAT?

    <p>Computed Reconstruction Tomography</p> Signup and view all the answers

    What is the main difference between conventional imaging and computed tomography?

    <p>Conventional imaging uses x and y axis, while computed tomography uses x, y, and z axis.</p> Signup and view all the answers

    Which inventor is credited with the invention of CT's cut/slice axial/transverse to the detector?

    <p>Watson</p> Signup and view all the answers

    What is the purpose of the rotating fan beam in computed tomography?

    <p>To create a tomographic cross-section of the body</p> Signup and view all the answers

    Where is the XRT and detector array located in computed tomography?

    <p>In the gantry</p> Signup and view all the answers

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