Treatment Planning Chapter 11-Thorax and Breast (Bentel)

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Treatment Planning Chapter 11-Thorax and Breast (Bentel)
2013-10-09 21:10:21

Treatment Planning Chapter 11(Bentel)
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  1. The most commonly occurring cancer in the United States is
    lung cancer
  2. When an immobilization device is needed, it is best to first determine the _______, and then________.
    first determine beam orientation THEN build the device
  3. It is important to reproduce the patient's position as it was during________.
    the simulation procedure
  4. Opposed anterior and posterior fields in the chest invariably cause a (higher/lower?) dose near the (cephalad/caudal) margin of than at the ______.
    higher dose near the cephalad margin of the CAX
  5. A lung boost is often delivered via_____
    opposed oblique fields
  6. Treatment fields in the chest should be designed with_______in mind.
    respiratory motion
  7. Tumors in the lower 2/3 of the esophagus can be boosted via_________
    A posterior and two anterior obliques
  8. Aligning two points separated by a long distance (is/is not?) a reliable method to reproduce a patient's position.
    Is a reliable method
  9. In setting up opposed oblique fields to treat a lung tumor it is important to know_______.
    The SSD for each field
  10. The number of US women who will develop breast cancer is approximately one in ______.
  11. The regional lymph nodes in breast cancer are:
    • internal mammary
    • supraclavicular
    • axillary
  12. In most breast treatment techniques, field matching is a problem between:
    • Between the internal mammary and the tangential field
    • Between the tangential and the supraclavicular fields

  13. The couch angle necessary to avoid bean divergence from the tangential fields into the SCV field depends on the(list 2 things)
    • 1)length of the tangential field in the direction of the SCV field
    • 2)distance
  14. To avoid beam divergence into the tangential fields into the SCV field the (foot/head) of the couch is turned(towards/away) from the collimator(gantry).
    foot of couch is turned AWAY from the collimator
  15. To avoid beam divergence into the lung by tangential fields the CAXs can be separated by slightly(more/less?) than _______degrees.
    separated by slightly MORE than 180 degrees

  16. Multiple adjacent electron fields to treat a chest wall recurrence should be considered ONLY if _______is available.
    proper dosimetry
  17. A boost is sometimes delivered to the tumor bed in breast cancer using
    • an electron beam or an interstitial implant
    • (also Accuboost)
  18. Cardiac toxicity from breast irradiation is __________.
    sometimes a serious problem
  19. The internal mammary nodes are sometimes treated in a separate field using an electron or photon beam or are_______;
    included in the tangential fields
  20. The most important considerations to avoid radiation-induced pneumonitis is(name 3):
    • 10total dose
    • 2)fractionation schedule
    • 3)volume of irradiated lung