Radiation Therapy || Questions and Correct Detailed Answers
for their skin to become erythemic correct answers When radiation was first used to treat cancer
treatment length was based on the amount of time it took
that treatment was better tolerated and more effective when treatment consisted of smaller doses
per day over several weeks correct answers What does fractionation mean?
breast correct answers First body part to be treated?
1) to cure cancer
2) to reduce symptions and improve quality of life correct answers Rad tx is used 2 diffrent ways
To maximize the dose to the tumor while minimizing the dose to surrounding normal tissues
correct answers The Goal of radiation therapy
Therapeutic Ratio correct answers The difference between the dose for the probability of tumor
control and the dose that minimizes normal tissue damage.. is known as?
1) Rapidly dividing,
2) Poorly differentiated
3) Have a long mitotic period correct answers Describe radiosensitive cells
rapidly dividing correct answers Radiation first kills cells that are
linear accelerator correct answers Radiation delivered during external beam radiation is produced
by a machine called a
, linear accelerator correct answers This machine generates high-energy radiation by accelerating
electrons to nearly the speed of light
millions of volts correct answers The radiation produced by a linear accelerator is measured in
Megavoltage equipment
First used in 1937 correct answers --Cyclotron
--Van de Graaff generator
--Betatron
--Cobalt-60
--Linear accelerator
Describes what type of equpitment?
Megavoltage Equipment correct answers Machines that are capable of producing an x-ray beam
of at least one MV
Precursors to the linear accelerator
Electrons can be extracted from the unit and used for treatment of shallow lesions.
OR they can be directed to strike a target to produce high energy x-rays (photons) to treat deep-
seated tumors correct answers Describe linear accelerators
The point around which the gantry, collimator and table rotate correct answers What is the
isocenter
360° correct answers Linear accelerators (and cobalt) can be rotated _____ around a patient
Drive stand
for their skin to become erythemic correct answers When radiation was first used to treat cancer
treatment length was based on the amount of time it took
that treatment was better tolerated and more effective when treatment consisted of smaller doses
per day over several weeks correct answers What does fractionation mean?
breast correct answers First body part to be treated?
1) to cure cancer
2) to reduce symptions and improve quality of life correct answers Rad tx is used 2 diffrent ways
To maximize the dose to the tumor while minimizing the dose to surrounding normal tissues
correct answers The Goal of radiation therapy
Therapeutic Ratio correct answers The difference between the dose for the probability of tumor
control and the dose that minimizes normal tissue damage.. is known as?
1) Rapidly dividing,
2) Poorly differentiated
3) Have a long mitotic period correct answers Describe radiosensitive cells
rapidly dividing correct answers Radiation first kills cells that are
linear accelerator correct answers Radiation delivered during external beam radiation is produced
by a machine called a
, linear accelerator correct answers This machine generates high-energy radiation by accelerating
electrons to nearly the speed of light
millions of volts correct answers The radiation produced by a linear accelerator is measured in
Megavoltage equipment
First used in 1937 correct answers --Cyclotron
--Van de Graaff generator
--Betatron
--Cobalt-60
--Linear accelerator
Describes what type of equpitment?
Megavoltage Equipment correct answers Machines that are capable of producing an x-ray beam
of at least one MV
Precursors to the linear accelerator
Electrons can be extracted from the unit and used for treatment of shallow lesions.
OR they can be directed to strike a target to produce high energy x-rays (photons) to treat deep-
seated tumors correct answers Describe linear accelerators
The point around which the gantry, collimator and table rotate correct answers What is the
isocenter
360° correct answers Linear accelerators (and cobalt) can be rotated _____ around a patient
Drive stand
