Radiation Therapy Quiz

10 Questions | By Mabecorp | Last updated: Oct 26, 2022 | Total Attempts: 1127

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Do you know enough about radiation therapy? Can you score high on this radiation therapy quiz? Radiation therapy or radiotherapy, which is often abbreviated as RT, RTx, or XRT, is known as a therapy that uses ionizing radiation. It is generally provided as a part of cancer treatment to kill malignant cells. It is normally delivered by a linear accelerator. It has an important role in medical field. Take some questions on the same, and let's see what you know.

Questions and Answers

1.

A patient is simulated to receive a treatment to cover a tumor volume plus 1 cm on each side. The tumor is 3.5 cm wide and has a depth of 4 cm. What will be the necessary field width at the skin surface, using a linear accelerator with the isocentric setup?
- A.
  
  5.28 CM
- B.
  
  6.31 CM
- C.
  
  6.67 CM
- D.
  
  8.0 CM
2.

What is the field size on a film if the collimator setting is 7X19 CM and the magnification factor is 1.33X?Choose the closest answer.
- A.
  
  8x15 cm
- B.
  
  10x10 cm
- C.
  
  9x25 cm
- D.
  
  8.99x26 cm
3.

The dose rate on a linac machine is 102.4 cGy/Min at 100 cm. What is the dose rate at 85.5 cm
- A.
  
  120
- B.
  
  125
- C.
  
  140
- D.
  
  160
4.

The film for SSD treatment on a linear accelerator is taken at 133 cm. What is the magnification factor?
- A.
  
  1.11 cm
- B.
  
  1.21 cm
- C.
  
  1.33 cm
- D.
  
  1.43 cm
5.

A tumor is to receive 6300 cGy in 42 fractions. What is the dose per fraction?______cGy/Fraction
- A.
  
  150
- B.
  
  168
- C.
  
  170
- D.
  
  180
6.

A patient is treated with the parallel opposed portal. The isocenter is it midline. The fields are equally weighted. The total dose is 5760 cGy, and the daily dose per port is 90 cGy. How many daily treatments will the patient receive?
- A.
  
  27
- B.
  
  32
- C.
  
  35
- D.
  
  49
7.

The dose at the isocenter for a field is 75 cGy per fraction. At a depth of 6 CM, using a 6 MeV beam, 10X10 CM collimator, the TMR is 0.899. The dose at a depth of maximum build-up is 83.4 cGy each time the isocenter gets 75 cGy. If the patient is to get 2625 cGy from this field, what is the total dose at d/max?
- A.
  
  2919
- B.
  
  2681
- C.
  
  2891
- D.
  
  3029
8.

What is the process by which a magnetic field and radiofrequency you used to create sectional images of the body?
- A.
  
  RRM
- B.
  
  MMR
- C.
  
  KRI
- D.
  
  MRI
9.

A term that describes the determination of the cause and effect of a situation or work
- A.
  
  Case study
- B.
  
  Analysis
- C.
  
  Evaluation
- D.
  
  None of these
10.

A term that describes the judgment or determination of the quality of work or creation
- A.
  
  Case study
- B.
  
  Analysis
- C.
  
  Evaluation
- D.
  
  None of these