Fractionated Radiation and Dose-Rate Effect Quiz
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Questions and Answers

True or false: PLD repair occurs if cells are prevented from dividing for 4 hours or more after irradiation.

False

True or false: SLD repair occurs if radiation dose is split into three fractions separated in time.

False

True or false: Brachytherapy techniques involve implanting radioactive sources close to tumors.

True

Which type of radiation shows a significant dose-rate effect?

<p>X-rays</p> Signup and view all the answers

What is the timing for sublethal damage repair (SLD) in mammalian cells?

<p>About 1 hour</p> Signup and view all the answers

Which type of brachytherapy technique is typically replaced by HDR (high-dose-rate) brachytherapy?

<p>Intracavitary brachytherapy</p> Signup and view all the answers

Which type of radiation shows a nearly nonexistent dose-rate effect?

<p>Neutrons</p> Signup and view all the answers

What is the main mechanism behind the sublethal damage repair (SLD) phenomenon?

<p>Repair of DNA breaks</p> Signup and view all the answers

Which type of brachytherapy technique involves placing radioactive sources in body cavities near tumors?

<p>Intracavitary Brachytherapy</p> Signup and view all the answers

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