Deck 44: Radiation Therapy

Question 1

Radiotherapy treatment plans require

A)an informed consent.
B)a psychological examination.
C)an assessment by a physical therapist.
D)the patient to take a leave of absence from work.

Answer 1

an informed consent.

Question 2

Typical radiotherapy treatment sessions require the rotation of the therapy unit around the patient.The precision necessary to ensure rotational accuracy mandates that the therapy unit

A)rotate using laser precision.
B)rotate around the isocenter of the unit.
C)be checked daily for rotational precision.
D)all of the above

Answer 2

all of the above

Question 3

The treatment planning process is typically completed

A)using a linear accelerator.
B)using a Cobalt radiotherapy unit.
C)using a simulator.
D)using an MR simulator.

Answer 3

using a simulator.

Question 4

Each of the following are essential to the calculation of irradiated tissue volume EXCEPT

A)dimensional target volume (DTV).
B)clinical target volume (CTV).
C)planning target volume (PTV).
D)gross target volume (GTV).

Question 5

The radiotherapy prescription includes
1)treatment field angles
2)protraction period
3)radiotherapist designated to deliver treatments
4)total dose administered
5)fractionalized dosages
6)patient's mental altitude
7)treatment techniques
8)treatment fields and dimensions
9)patient side effects

A)1, 3, 4, 5, 7, and 8
B)1, 2 4, 6, 8, and 9
C)1, 2, 4, 5, 7, and 8
D)2, 4, 5, 7, 8, and 9

Question 6

Radiotherapy treatments

A)are treated as prescriptions.
B)require a physician's order.
C)start with a consultation.
D)all of the above

Question 7

Radiotherapy of the prostate is particularly difficult due to its

A)small size.
B)anatomical position between the rectum and bladder.
C)radioresistance to high energy x-rays.
D)inability to be visualized using IGRT.

Question 8

Imaging gives the radiation therapist and oncologist

A)a perspective of the shrinkage of the tumor as radiation is being administered.
B)an opportunity to see if the patient's vital structures are being damaged during treatment sessions.
C)the ability to compare the planned treatment field with the anatomy of the patient.
D)the flexibility to adjust dosages during treatment sessions.

Question 9

All of the following are related EXCEPT:

A)Spare healthy tissues.
B)Preserve surrounding tissue function.
C)Eradicate the malignancy.
D)Prolong side effects as tissues recover.

Question 10

Radiotherapy treatment plans

A)are carried out by the radiotherapists.
B)require the patient to suspend respiration for the duration of the treatment.
C)require that laser lines are superficially and painlessly burned into the patient's skin.
D)allow patients to readjust their position after a period of time.

Question 11

The total tissue volume irradiated takes into account the

A)patient's body motions, such as respiration.
B)the zone of tissue surrounding the malignant mass.
C)size and dimension of the malignant mass.
D)all of the above

Question 12

The therapy treatment fields are measured in

A)milli-ampere seconds (mAs).
B)Compton scatter ratios (C/R).
C)monitor units (MU).
D)Roentgens (R).

Question 13

IGRT is an important part of a successful radiotherapy program because of its

A)ability to create images.
B)capability for gated treatment fields.
C)technology for optical tracking of tumor location and size.
D)all of the above

Question 14

PET/CTs are considered

A)hybrid machines.
B)essential to fusion imaging.
C)integral to treatment planning and staging.
D)all of the above

Question 15

The very first successful use of radiation energy to treat and cure a disease process was with a case of

A)acne.
B)psoriasis.
C)retinoblastoma.
D)melanoma.

Question 16

Palliative treatment plans

A)are intended to cure the patient's cancer condition.
B)are administered in a single massive dosage.
C)require fewer treatment sessions than curative plans.
D)do not consider exposure reproducibility.

Question 17

Radiotherapy treatment plans

A)are the responsibility of the radiotherapist.
B)are the same for all patients.
C)are prescribed by a radiation oncologist.
D)all of the above

Question 18

Image guided radiation therapy (IGRT)

A)permits the placement of internal radiotherapy sources.
B)provides CT images of the therapy patient.
C)allows the radiotherapist to take x-ray images of the patient.
D)is considered an obsolete technology and being replaced by intensity modulated therapy.

Question 19

When radiographic images are produced during portal imaging using megavoltages,

A)high contrast images are produced due to the number of photoelectric interactions.
B)pair production and Compton interactions predominate.
C)very low contrast images are produced.
D)both b and c

Question 20

X-rays used for radiotherapy

A)are in the megavoltage range of energies.
B)are produced by a Cobalt-60 source.
C)are monoenergetic.
D)do not need filtration due to their high energies.

Question 21

Match the following choices with the correct statement as each relates to radiation therapy.
physician specializing in radiation therapy

A)Clarence Dally
B)isocenter
C)isodose curve
D)simulation
E)contouring
F)Emil Grubbe
G)radiotherapist
H)palliative
I)fusion imaging
J)IGRT
K)curative
L)beam angles
M)radiation oncologist
N)cone beam CT

Question 22

Stereotactic radiosurgery (SRS) is most effective with

A)breast lesions.
B)surgically inaccessible lesions.
C)superficial tumors.
D)colon cancers.

Question 23

Match the following choices with the correct statement as each relates to radiation therapy.
treatment plan intended to eradicate malignancy

A)Clarence Dally
B)isocenter
C)isodose curve
D)simulation
E)contouring
F)Emil Grubbe
G)radiotherapist
H)palliative
I)fusion imaging
J)IGRT
K)curative
L)beam angles
M)radiation oncologist
N)cone beam CT

Question 24

Proton radiotherapy is particularly beneficial because of

A)protons depositing their total energy within the target tissue.
B)the positive charge of protons.
C)the minimal scatter radiation produced with protons.
D)all of the above

Question 25

Match the following choices with the correct statement as each relates to radiation therapy.
integrating structural images, MRI or CT, with functional images, PET or SPECT

A)Clarence Dally
B)isocenter
C)isodose curve
D)simulation
E)contouring
F)Emil Grubbe
G)radiotherapist
H)palliative
I)fusion imaging
J)IGRT
K)curative
L)beam angles
M)radiation oncologist
N)cone beam CT

Question 26

Match the following choices with the correct statement as each relates to radiation therapy.
first person to use lead as a patient protection material

A)Clarence Dally
B)isocenter
C)isodose curve
D)simulation
E)contouring
F)Emil Grubbe
G)radiotherapist
H)palliative
I)fusion imaging
J)IGRT
K)curative
L)beam angles
M)radiation oncologist
N)cone beam CT

Question 27

Match the following choices with the correct statement as each relates to radiation therapy.
achieved by moving the gantry and/or couch

A)Clarence Dally
B)isocenter
C)isodose curve
D)simulation
E)contouring
F)Emil Grubbe
G)radiotherapist
H)palliative
I)fusion imaging
J)IGRT
K)curative
L)beam angles
M)radiation oncologist
N)cone beam CT

Question 28

All of the following are components of a typical linear accelerator EXCEPT

A)gantry and collimator assembly.
B)simulator.
C)treatment couch.
D)control console and modulator cabinet.

Question 29

Match the following choices with the correct statement as each relates to radiation therapy.
carries out treatment plans on patients

A)Clarence Dally
B)isocenter
C)isodose curve
D)simulation
E)contouring
F)Emil Grubbe
G)radiotherapist
H)palliative
I)fusion imaging
J)IGRT
K)curative
L)beam angles
M)radiation oncologist
N)cone beam CT

Question 30

Match the following choices with the correct statement as each relates to radiation therapy.
graphic representation of radiation intensity in spacial distribution

A)Clarence Dally
B)isocenter
C)isodose curve
D)simulation
E)contouring
F)Emil Grubbe
G)radiotherapist
H)palliative
I)fusion imaging
J)IGRT
K)curative
L)beam angles
M)radiation oncologist
N)cone beam CT

Question 31

The most common therapy unit is the

A)Cobalt-60 gamma unit.
B)CT simulator.
C)tomotherapy unit.
D)linear accelerator.

Question 32

Linear accelerators are capable of

A)360-degree rotation.
B)x-ray and electron therapy.
C)measuring dose rate in real time.
D)all of the above

Question 33

Match the following choices with the correct statement as each relates to radiation therapy.
tracing of the shape of the tumor volume as well as structures near the tumor volume that the radiation dose will affect

A)Clarence Dally
B)isocenter
C)isodose curve
D)simulation
E)contouring
F)Emil Grubbe
G)radiotherapist
H)palliative
I)fusion imaging
J)IGRT
K)curative
L)beam angles
M)radiation oncologist
N)cone beam CT

Question 34

Match the following choices with the correct statement as each relates to radiation therapy.
intended to extend life and/or improve quality of life in terminal patient

A)Clarence Dally
B)isocenter
C)isodose curve
D)simulation
E)contouring
F)Emil Grubbe
G)radiotherapist
H)palliative
I)fusion imaging
J)IGRT
K)curative
L)beam angles
M)radiation oncologist
N)cone beam CT

Question 35

Match the following choices with the correct statement as each relates to radiation therapy.
creates 3-D images that pinpoint the exact size, location, and coordinates of the treatment isocenter

A)Clarence Dally
B)isocenter
C)isodose curve
D)simulation
E)contouring
F)Emil Grubbe
G)radiotherapist
H)palliative
I)fusion imaging
J)IGRT
K)curative
L)beam angles
M)radiation oncologist
N)cone beam CT

Question 36

Match the following choices with the correct statement as each relates to radiation therapy.
the point where all three rotational axes intersect from the simulator and for the treatment machine

A)Clarence Dally
B)isocenter
C)isodose curve
D)simulation
E)contouring
F)Emil Grubbe
G)radiotherapist
H)palliative
I)fusion imaging
J)IGRT
K)curative
L)beam angles
M)radiation oncologist
N)cone beam CT

Question 37

Match the following choices with the correct statement as each relates to radiation therapy.
first step in the treatment planning process

A)Clarence Dally
B)isocenter
C)isodose curve
D)simulation
E)contouring
F)Emil Grubbe
G)radiotherapist
H)palliative
I)fusion imaging
J)IGRT
K)curative
L)beam angles
M)radiation oncologist
N)cone beam CT