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Radiation Therapy Review-Practice Test 6 Exam Questions with Correct Answers
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Tuberculosis is an example of an infection by which route? - Answer-Airborne Which of the following has the longest wavelength? - Answer-A) UV Rays B) Visible Rays C) Microwaves-CORRECT D) Gamma Rays A stage II skin reaction is depicted by: - Answer-Dry desquamation The unit used to mea...

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  • October 7, 2024
  • 7
  • 2024/2025
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  • tuberculosis is an example of an infection by whic

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Radiation Therapy Review-Practice Test
6 Exam Questions with Correct Answers
Tuberculosis is an example of an infection by which route? - Answer-Airborne

Which of the following has the longest wavelength? - Answer-A) UV Rays
B) Visible Rays
C) Microwaves-CORRECT
D) Gamma Rays

A stage II skin reaction is depicted by: - Answer-Dry desquamation

The unit used to measure the wavelength associated with x-ray energy is the: - Answer-
Angstrom

________ interactions result in the highest exposure to the patient. - Answer-Compton
and Photoelectric

When using thermoplastic masks for immobilization, the patient skin dose must be
considered. The skin dose will depend on: - Answer-The beam energy and the
thickness of the mask

What photon interaction dominates at 50 MeV? - Answer-Pair Production

A doctor indicates that the patient should be treated 2 cm superior to the bifurcation of
the common iliac nodes, due to the patient's advanced bladder cancer. Where would
the anatomical landmark for the bifurcation be found? - Answer-L4

A tumor assigned a grade of G4 indicates the tumor is: - Answer-undifferentiated

The annual occupational effective dose limits recommended by NCRP is ________. -
Answer-50 mSv

Image verification used to identify hidden anatomy relative to observable or surface
landmarks reproduce treatment _________. - Answer-localization

The chain of infection follows which cycle? - Answer-Host-infectious microorganism-
reservoir-mode of transmission

Permanent alopecia is seen in radiation doses that reach ___ Gy - Answer-45 Gy

A measure of machine output from a linear accelerator is defined as a: - Answer-
monitor unit

, When the x-ray photon strikes an atom within the tissue being imaged and loses all its
energy to an inner shell electron of that atom, the photon is said to have been ________
and undergone the ________. - Answer-absorbed; photoelectric interaction

What tumor originates from smooth muscle? - Answer-Leiomysosarcoma

The amount of shielding for brachytherapy sources depends on which of the following?
Please select all that apply. - Answer-1) type of source
2) amount of radioactive material

Patients taking metformin should stop taking the medication ______ hours before
having contrast administration for a CT simulation. - Answer-48 hours

Mechanical tolerance for stereotactic radiation therapy treatment delivery should be
within ________. - Answer-± 2 mm

Half value layer can be calculated with which of the following equations? - Answer-
0.693/μ

The anatomical location of the hilum of the kidneys is located at: - Answer-T12-L2

The interaction that takes place between the incident x-ray photon and an inner shell
electron is called: - Answer-photoelectric absorption

MOST importantly, a patient being treated for Hodgkin's disease must be monitored for:
- Answer-Myelosuppression
-a large quantity of bone marrow is irradiated in the treatment field of these patients
which can lower immunity

Seminoma of the testes arises from: - Answer-Germ cells

The carina is generally located at which of the following vertebra? - Answer-T5

Verification of the correct treatment field placement to the treatment plan isocenter
relative to patient anatomy is BEST performed by using _________ images. - Answer-
beams eye view images

The MOST common metastatic site for prostate cancer is the: - Answer-Bone

The biologic effectiveness of low-dose rate treatments can be reproduced using remote
after loading with ____________ brachytherapy. - Answer-pulsed-dose rate

Calculate the hinge angle between two fields if a patient is being treated with 30-degree
wedges. - Answer-120
-HA= 180-(2 x wedge angle)

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