Deck 30: Radiation Oncology

Question 1

The technique that uses radioactive material placed within the patient is called:

A) brachytherapy.
B) simulation.
C) dosimetry.
D) linear energy transfer.

Answer 1

brachytherapy.

Question 2

Which member of the radiation therapy team is responsible for developing the treatment plan to irradiate the tumor while protecting surrounding normal tissues?

A) Medical dosimetrist
B) Medical physicist
C) Radiation therapist
D) Radiation oncologist

Answer 2

Medical dosimetrist

Question 3

Radiation has more effect on cancer cells because _____ than normal cells.

A) they are more highly differentiated
B) a greater percentage of these cells are undergoing mitosis
C) cancer cells undergo more direct interactions
D) it interacts more readily with cancer cells

Answer 3

a greater percentage of these cells are undergoing mitosis

Question 4

The most common machine used to deliver external-beam therapy is the:

A) linear accelerator.
B) betatron.
C) cobalt-60 unit.
D) orthovoltage.

Question 5

The basic principle of cancer treatment with radiation is that radiation:

A) stimulates cancer cells to grow.
B) damages cancer cells but stimulates normal cells.
C) damages cancer cells and normal cells equally.
D) usually damages cancer cells more than normal cells.

Question 6

The goal of radiation oncology is to:

A) destroy all tissue in the portion of the body where the cancer is located.
B) deliver a cancericidal dose to the tumor but limit the dose to normal tissue.
C) limit dose to the cancer and normal tissue to avoid toxicity.
D) deliver a large dose all at once to the cancer.

Question 7

_____ is done to relieve symptoms,not to cure.

A) Fractionation
B) Differentiation
C) Palliation
D) Conformal radiation

Question 8

One way to treat cancer but minimize the toxic effects of radiation is to use:

A) fractionation.
B) differentiation.
C) palliation.
D) conformal radiation.

Question 9

The linac can produce a beam of electrons of varying energies when:

A) filtration is changed.
B) the target is removed.
C) IMRT is used.
D) simulation is required.

Question 10

Gamma knife is primarily used to treat small benign or malignant lesions located in the:

A) abdomen.
B) breast.
C) brain.
D) prostate.

Question 11

The accurate calculation and measurement of radiation dose for treatment of a therapy patient is referred to as:

A) brachytherapy.
B) simulation.
C) dosimetry.
D) linear energy transfer.

Question 12

The retractable imaging device used to produce a digital image that is displayed immediately is called:

A) CyberKnife.
B) image-guided radiation therapy (IGRT).
C) electronic portal imaging devices (EPIDs).
D) tomotherapy.

Question 13

The majority of cancers arise from the epithelium and are classified as:

A) sarcomas.
B) lymphomas.
C) myelomas.
D) carcinomas.

Question 14

Treatment that is designed to deliver radiation to the exact target volume is called:

A) fractionation.
B) differentiation.
C) palliation.
D) conformal radiation.

Question 15

The spread of cancer is termed:

A) differentiation.
B) palliation.
C) metastasis.
D) prophylaxis.

Question 16

The method that is used to determine the volume of tissue that must be included in the radiation field is called:

A) brachytherapy.
B) simulation.
C) dosimetry.
D) linear energy transfer.

Question 17

Intensity-modulated radiation therapy (IMRT)uses:

A) radioactive isotopes.
B) multileaf collimators.
C) cerrobend blocks.
D) permanent implants.