Treatment planning Chapter 14 (misc treatments)

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jaxkaty5437
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244771
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Treatment planning Chapter 14 (misc treatments)
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2013-11-03 20:48:44
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Treatment planning Chapter 14 (misc treatments)
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  1. The 10 yr survival rate for patients with all stages of Hodgkin's disease is approximately____%?
    The 10 yr survival rate for patients with all stages of Hodgkin's disease is approximately 80%.
  2. The patient position for the treatment of a mantle field in Hodgkin's disease is usually_______?
    The patient position for the treatment of a mantle field in Hodgkin's disease is usually in the supine position with the chin extended and the arms raised above the head.
  3. Patients with Hodgkin's being treated with parallel opposed AP/PA fields to mantle and para-aortic and spleen fields are best positioned in the ____position when ______ fields are treated.
    • Patients with Hodgkin's being treated with parallel opposed AP/PA fieldsto mantle and para-aortic and spleen fields are best positioned in the
    • supine position when all fields are treated.
  4. It is important to align the patient to the sagittal laser every day because if it is not, the field is _____with respect to the patient's body.?
    • It is important to align the patient to the sagittal laser every day because if it is not, the field is rotated with respect to the patient's
    • body.
  5. To assure inclusion of palpable lymph nodes within the radiation field, the lymph nodes should be indicated by _____ ____ during the ______.
    To assure inclusion of palpable lymph nodes within the radiation field, the lymph nodes should be indicated by radiopaque markers during the simulation.
  6. The gap between the mantle and para-aortic fields, assuming the same field length and SAD, is calculated and set correctly if the patient is in the same position and the ____margin of the _____ ______ field coincides with the marker indicating the _____ margin of the _____  _______field.
    • The gap between the mantle and para-aortic fields, assuming the same field length and SAD, is calculated and set correctly if the patient is in the same position and the cephalad margin of the posterior para-aortic field coincides with the marker indicating the caudal margin of the anterior
    • mantle field.
  7. Tattoos made on the patient's skin indicating irradiated areas(can/can not) shift due to ________.
    Tattoos made on the patient's skin indicating irradiated areas can shift due to growth and weight changes.
  8. If the SAD at the central axis in two opposed mantle fields is 100 cm and the patient's thickness is 20 cm, we can find the thickness of the tabletop and the immobilization device under the patient by_______________?
    • If the SAD at the central axis in two opposed mantle fields is 100 cm
    • and the patient's thickness is 20 cm, we can find the thickness of the tabletop and the immobilization device under the patient by rotating the gantry 180 degrees and determining the SSD to the bottom of the couch, then subtracting this distance from 100 cm.
  9. In an isocentric technique using a machine with 100cm SAD, the total distance between two sources in parallel opposed fields is always______cm.
    • In an isocentric technique using a machine with 100cm SAD, the total distance between two sources in parallel opposed fields is always 200 cm.
  10. In an SSD technique using a machine with 100 cm SAD, the total distance between the two sources in POP fields can be determined by, ______________?
    • In an SSD technique using a machine with 100 cm SAD, the total distance
    • between the two sources in POP fields can be determined by, adding the patient's thickness to the AP and PA SSDs.
  11. When a soft tissue sarcoma in an extremity is treated it is important to use__________________?
    When a soft tissue sarcoma in an extremity is treated it is important to use generous tumor margins including the entire circumference of the muscle compartment and spare a small strip of tissue along the extremity.
  12. When a lower extremity is treated, it is almost necessary to.....?
    When a lower extremity is treated, it is almost necessary to reverse the patient's position on the couch with the feet towards the gantry.
  13. The advantage of intraoperative radiation therapy is.....?
    The advantage of intraoperative radiation therapy is that it provides superior normal tissue sparing and improved precision.
  14. High and low dose total body irradiation is used in the ......?
    High and low dose total body irradiation is used in the preparation of patients for a bone marrow transplant and in the treatment of chronic lymphocytic leukemia.
  15. An allogenic bone marrow transplant is one in which the bone marrow is removed ....?
    An allogenic bone marrow transplant is one in which the bone marrow is removed from a sibling who is immunologically compatible with the patient.

    *can be anyone genetically matched and can be related or unrelated to you.("allo" means other)
  16. The most serious late consequence of TBI is _________.
    radiation pneumonitis
  17. The most common position for patients receiving total-skin electron irradiation is_____.
    • Standing with the legs spread and arms raised
  18. The main goal of radiation therapy in patients with bone metastasis is to ....?
    prevent fractures and reduce pain

    *most common sites: ribs, spine, sacrum, long bones in extremities
  19. When a patient requires half-body treatment but the necessary distance cannot be achieved, one can....?
    When a patient requires half-body treatment but the necessary distance cannot be achieved, one can turn the collimator 5 degrees taking advantage of the diagonal dorection or angle the gantry a few degrees.

    • *the patient is often placed on the floor(too weak to stand) and if necessary, field can be divided into 3 parts instead of 2 parts
    • SINGLE FRACTION
    • 600 cGy (upper body)
    • 800 cGy (lower body)
    • (used for relief of wide spread bone mets)
  20. In patients treated for a spinal cord compression, the treatment field should include .....?
    In patients treated for a spinal cord compression, the treatment field should include 2 vertebral bodies in each direction beyond demonstrable disease.
  21. The 2 most common age groups that get Hodgkin's are...?
    • 1)15-40(especially in 20's)
    • 2)late adulthood (after 55)
  22. About __-___% of all cases of Hodgkin's is found in children and teens.
    About 10-15% of all cases of Hodgkin's is found in children and teens.
  23. Treatment for Hodkin's typically involves...?
    reatment for Hodkin's typically involves "total" lymphoid irradiation.

    *can also be "subtotal
  24. Hodgkin's lymph node group...?
    • ABOVE DIAPHRAGM:
    • 1)CERVICAL
    • 2)SCV
    • 3)INFRACLAVICULAR
    • 4)AXILLARY
    • 5)MEDIASTINUM
    • 6)HILAR NODES
    • GROUPS BELOW THE DIAPHRAGM
    • 1)PARA-AORTIC
    • 2)PELVIS
    • 3)INGUINAL
    • FIELDS ARE "MANTLE" a gap for matching and "PARA-AORTIC"

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