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19 Cards in this Set
- Front
- Back
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What types of cancer are treated with radiation therapy?
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Lung Cancer
Prostate Breast Skin |
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What do you do for lung cancer?
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5000-6000 cGy, 10 mEv photons with AP, PA, and off cord obliques
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What do you do for Prostate cancer?
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Surgical removal, four field technique AP, PA, Rt/Lt Lat 7000 cCy of 10 MeV
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Two tangential fields to chest wall, 5000 cGy in 5 weeks. An electron boost to the site of lumpectomy adds 1000 cGy. Chemotherapy may also be used
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Breast Cancer
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What do you do for skin cancer?
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5000 cGy in a 4 week period
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Amount of ionizing radiation absorbed per unit of mass of irradiated material.
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absorbed dose
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Four independent x-ray collimators that are used to define the radiation treatment field.
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assymetric jaws
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Placement of radioactive nuclides in or on a neoplasm to deliver a cancericidal dose.
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brachytherapy
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A 5- year period after completion of treatment during which time the patient exhibits no evidence of disease.
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Cure
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measurement of radiation dose in an absorbing medium
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dosimetry
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Division of total planned dose into a number of smaller doses to be given over a longer period of time.
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Fractionation
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International unit for the quantity of radiation received by the patient
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gray
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energy emitted and transferred through matter that results in the removal of orbital electrons
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ionizing
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Device for accelerating charged particles, such as electrons, to produce high-energy electron or photon beams.
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linear accelerator
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Transmission of cells or groups of cells from primary tumor to site elsewhere in the body.
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metastasis
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to relieve symptoms, not for the cure
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palliation
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succeptibility of neoplastic cells to cure by ionizing radiation
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radiocurable
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A diagnostic x-ray machine that has the same geometric and physical characteristics as a radiation therapy treatment unit
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Simulator
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In megavoltage beam therapy, reduced skin injury per centigray exposure because electron equilibrium occurs below skin
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skin sparing
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