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Radiation Therapy Exam A+ Pass Verified New Update

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Radiation Therapy Exam A+ Pass Verified New Update _______ _% of cancer pt's receive rad. Therapy. - Answer- 70 - 75 What is the purpose of rad therapy? - Answer- Treat cancerous cells w/ radiation. What is Erythema? - Answer- skin reddening What is the term for hair loss? - Answer- Epilation What is protracted radiation? - Answer- radiation dose given all at once What is Fractionated radiation? - Answer- Small amounts of radiation over long period of time. 1st Reported Successful Rad therapy Treatment was performed by? - Answer- Clarence E. Skinner Why are High energy x-rays used vs alpha particles in rad therapy? - Answer- Alpha particles are not strong enough, skin takes the hit. High energy x-rays can penetrate through skin to tumor spot. Law of Bergonie' & Tribondeau states - Answer- Stem cells are radiosensitive. The higher the metabolic rate, the more radiosensitive the cells are. As proliferation rate increases, so does the radio sensitivity What is "target" theory? - Answer- DNA molecule is primary target of ionizing radiation What is a carcinogen? - Answer- chemical inducing cancer Therapeutic Ratio Must have a ratio greater than ____ to be successful. - Answer- 1 What is the Skin Sparing Effect? - Answer- Greater energy x-rays are able to penetrate deeper & deposit its energy (sparing the skin). What is Brachytherapy? - Answer- implanted radioactive "seeds" within the tissue or organ

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Radiation Therapy Exam A+ Pass
Verified New Update
_______ _% of cancer pt's receive rad. Therapy. - Answer- 70 - 75

What is the purpose of rad therapy? - Answer- Treat cancerous cells w/ radiation.

What is Erythema? - Answer- skin reddening

What is the term for hair loss? - Answer- Epilation

What is protracted radiation? - Answer- radiation dose given all at once

What is Fractionated radiation? - Answer- Small amounts of radiation over long period
of time.

1st Reported Successful Rad therapy Treatment was performed by? - Answer-
Clarence E. Skinner

Why are High energy x-rays used vs alpha particles in rad therapy? - Answer- Alpha
particles are not strong enough, skin takes the hit.
High energy x-rays can penetrate through skin to tumor spot.

Law of Bergonie' & Tribondeau states - Answer- Stem cells are radiosensitive.
The higher the metabolic rate, the more radiosensitive the cells are.
As proliferation rate increases, so does the radio sensitivity

What is "target" theory? - Answer- DNA molecule is primary target of ionizing radiation

What is a carcinogen? - Answer- chemical inducing cancer

Therapeutic Ratio Must have a ratio greater than ____ to be successful. - Answer- 1

What is the Skin Sparing Effect? - Answer- Greater energy x-rays are able to penetrate
deeper & deposit its energy (sparing the skin).

What is Brachytherapy? - Answer- implanted radioactive "seeds" within the tissue or
organ

Superficial x-rays (____ keV) - Answer- 120

Orthovoltage x-rays (____ keV) - Answer- 250

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