Radiation

1. The total dose of radiation used depends on tumor _______ , location and on the sensitivity of the tumor and nearby tissues.
7. The dose is always _________ than the exposure because some energy is lost as it travels to the destination.
9. Up to 70% of cancer patients will receive radiation as a part of their ________ plan.
10. Side effects of _________ therapy can be more severe and may require more frequent interventions.Combining radiation with chemotherapy involves giving chemotherapy agents that radiosensitize the tumor to enhance the radiation damage
11. The amount of radiation absorbed by the tissue
13. Try to coordinate care to limit ______directly at the radiation source.
15. Radiation cancer treatment can be delivered by external beam or internal devices called _________

2. Brachytherapy may also involve __________ of a radioactive source.An example is the use of iodine-131 (131I), used to treat some thyroid cancers.
3. Radiation therapy usually is given as a series of divided _______ (fractionation) over a set time.
4. The three factors determining the absorbed dose are the intensity of exposure, the duration of exposure, and the _________ of the radiation source to the cells.
5. Radiation therapy can result in both _______and long-term side effects.
6. Skin in the radiation path becomes photosensitive, increasing the risk for sunburn and sun damage. Advise against direct skin exposure to the sun during treatment and for at least ______ year after completion of radiation therapy.
8. Shielding is using a material such as a _______ apron to avoid exposure.
11. Changes to the skin, known as radiation ____________, are the most common side effect of radiotherapy and can range from redness/hyperpigmentation and rash to skin desquamation.
12. Absorbed radiation doses are described in units called _______(Gy)
14. The amount of radiation delivered to a tissue
16. _________ beam is radiation delivered from a source outside of the patient. The patient is not radioactive, and there is no hazard to others around the patient once the treatment is complete.