Test 3: Diagram & Table

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Author:
RadiationTherapy
ID:
266622
Filename:
Test 3: Diagram & Table
Updated:
2014-03-30 12:26:29
Tags:
radiation therapy
Folders:
mosbys
Description:
Test 3: Diagram 6-1 & Table 6-3
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  1. List the half-life, source form and applications of Cesium 137:
    • Cesium 137
    • 30 years
    • Tubes, needles
    • LDR intracavitary, interstitial
  2. List the half-life, source form and applications of Iridium 192:
    • Iridium 192
    • 74 days
    • Seeds
    • LDR interstitial, HDR interstitial & intracavitary
  3. List the half-life, source form and applications of Cobalt 60:
    • Cobalt 60
    • 5.26 years
    • Encapsulated spheres
    • HDR intracavitary
  4. List the half-life, source form and applications of Iodine 125:
    • Iodine 125
    • 60 days
    • Seeds
    • Interstitial
  5. List the half-life, source form and applications of Palladium 103:
    • Palladium 103
    • 17 days
    • Seeds
    • Interstitial
  6. List the half-life, source form and applications of Gold 198:
    • Gold 198
    • 2.7 days
    • Seeds
    • Interstitial
  7. List the half-life, source form and applications of Strontium 90:
    • Strontium 90
    • 28.9 years
    • Plaque 
    • Superficial ocular lesions (pterygium)
  8. List the half-life, source form and applications of Strontium 89:
    • Strontium 89
    • 51 days
    • IV solution
    • Diffuse bone metastases
  9. List the half-life, source form and applications of Iodine 131:
    • Iodine 131
    • 8 days
    • Capsule
    • Thyroid cancer
    • 1. Gridded electron gun
    • 2. Energy switch
    • 3. Standing wave accelerator guide
    • 4. Focal spot size
    • 5. Steering system
    • 6. Achromatic dual-plane bending magnet
    • 7. 10 port carousel w/ scattering foils/flattening filters
    • 8. Ion chamber
    • 9. Asymmetric jaws
    • Gridded Electron Gun
    • *Produces electrons
    • *Controls dose rate 
    • *Permits beam control for dynamic treatment because gun can be gated
    • *Demountable
    • Energy Switch
    • Provides energies within the full therapeutic range
    • Ensures optimal performance & spectral purity
    • Standing Wave Accelerator Guide
    • Maintains optimal bunching for different acceleration conditions, providing high dose rates, stable dosimetry, and low stray radiation.
    • Transport system minimizes power and electron source demands.
    • Focal Spot Size
    • Held constant by the bending magnet.
    • Ensures optimal image quality for portal imaging.
    • Steering System
    • Radial and transverse steering coils and a real time feedback system ensure beam symmetry to within ±2% at all gantry angles.
    • Achromatic Dual-Plane Bending Magnet
    • Ensures exact replication of the input beam for every treatment
  10. 10 Port Carousel w/ Scattering Foils & Flattening Filters

    • Flattening Filter: Introduced to the path of the photon beam to evenly distribute the energy of the photon beam.
    • Scattering Foil: Spreads the electron beam to achieve uniform electron fluence across the collimated area.
    • Ion Chamber
    • Impervious to temperature & pressure
    • Monitors beam dosimetry to within 2%
    • Asymmetric Jaws
    • Provide beam definition of symmetric or asymmetric fields
  11. The standing wave accelerator guide maintains optimal _________ for different _____________, providing high _________, stable ________, and low __________.
    • Bunching
    • Acceleration Conditions
    • high Dose Rates
    • stable Dosimetry
    • low Stray Radiation
  12. The steering system contains radial and transverse _____________ and a real time ________ system ensure ___________ to within +/- 2% at all gantry angles.
    • Steering coils
    • Feedback

    beam symmetry
  13. The flattening filter is introduced into the path of the photons to ________ distribute the _________ of the photon beam.
    • Evenly 
    • Energy
  14. scattering foil is used to ________ the electron beam & achieve uniform electron _________ across the _________ area and consists of thin metallic material, usually ________.
    • Spread
    • Fluence
    • Collimated
    • Lead

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