STR MOCK FINAL EXAM 2024.
If a linear accelerator is properly calibrated, the field size indicated at
the control console will correspond to the size of the field at the: -
CORRECT ANSWERS-Mechanical Isocenter
A patient is treated with parallel-opposed mantle and paraortic fields of
lengths 30 cm and 15 cm respectively. Calculate the gap required on
the surace for the beams to intersect at the midline depth of 10 cm,
SSD 100 - CORRECT ANSWERS-2.25 cm
(30/2 X 100/10)+(15/2 X 100/10)
While treating a patient on a linear accelerator. an equipment
malfunction causes the main circuit breaker to be tripped. The
therapist should do all fo the following EXCEPT:
A: immediately remove the patient from the treatment room
B: Record treatment dosage recieved on the mechanical counter
C: Resent circuit breaker and continue treating
D. Calculate required remaining doseage - CORRECT ANSWERS-
immediately remove the patient from the treatment room
While the frequency of acquiring digital or hard copy portal images
varies, they should all be aquired - CORRECT ANSWERS-prior to or
on the first day of treatment
The approximate 5 year survival rate for stage II (T4 N0 M0) colorectal
cancer is - CORRECT ANSWERS-60-85%
The TD 5/5 for the rectum is - CORRECT ANSWERS-6000 cGy
Gadolinium is a common contrast agent utilized for which diagnostic
study? - CORRECT ANSWERS-6000 cGy
Which of the following is not an item checked during daily warm-up of
the linear accelerator? - CORRECT ANSWERS-MRI
,If a patient has been prescribed 120 cGy/fraction b.i.d. to a total dose
of 6000 cGy. How many fractions remain after delivering 1800 cGy? -
CORRECT ANSWERS-35
Wedge angle refers to: - CORRECT ANSWERS-angle through which
an isodose curve is tilted at the central axis at a specific depth
The normal prostate is located:
anterior to rectum
inferior to bladder
posterior to the symmphysis - CORRECT ANSWERS-all
The greatest occurrence of salivary neoplasms are found in the -
CORRECT ANSWERS-parotid gland
As identified in the treatment plan, which volume is the largest? -
CORRECT ANSWERS-Irradiated Volume
IF a patient begins to cough vigorously during treatment delivery, the
RT should - CORRECT ANSWERS-stop the treatment and check on
the patient and portal alignment
Radiographyically, which primary lesion can be described as having a
sunburst appearance? - CORRECT ANSWERS-Osteosarcoma
The most frequent site of a soft tissue sarcoma metastases is -
CORRECT ANSWERS-lung
Which of the following is not a pathogen?
A: viruses
B: protozoans
C: fungi
D: fomites - CORRECT ANSWERS-D
The Philadelphia chromosome is associated with which leukemia? -
CORRECT ANSWERS-CML
, The intersection point of the axis of rotation of the collimator and the
axis of rotation of the gantry defines what? - CORRECT ANSWERS-
Mechanical isocenter
The first sign of the acute radiation syndrome following a large
exposure of radiation is usually - CORRECT ANSWERS-Nausea
This is a common oncologic emergency associated with cancer.
Presenting symptoms include fatigue, lethargy, weakness, nausea,
dehydration, and decreased mental fuction - CORRECT ANSWERS-
Hypercalcemia
The majority of larynx tumors arise on this area - CORRECT
ANSWERS-glottis
Acute radiation effects include all of the following EXCEPT:
A: diarrhea
B: erythema
C: epilation
D: radiation pneumonitis - CORRECT ANSWERS-D
Which is the main advantage of used a split beam technique? (1/2
beam blocking) - CORRECT ANSWERS-preventing beam divergence
Which of the following would serve as the best method for protection
from a high-energy gamma source - CORRECT ANSWERS-
increasing distance from source
A radiotherapy patient has
right to confidentiality of all info regarding their care
right to refuse treatment - CORRECT ANSWERS-both
An ataxic patient is said to be - CORRECT ANSWERS-lacking
coordination
If a linear accelerator is properly calibrated, the field size indicated at
the control console will correspond to the size of the field at the: -
CORRECT ANSWERS-Mechanical Isocenter
A patient is treated with parallel-opposed mantle and paraortic fields of
lengths 30 cm and 15 cm respectively. Calculate the gap required on
the surace for the beams to intersect at the midline depth of 10 cm,
SSD 100 - CORRECT ANSWERS-2.25 cm
(30/2 X 100/10)+(15/2 X 100/10)
While treating a patient on a linear accelerator. an equipment
malfunction causes the main circuit breaker to be tripped. The
therapist should do all fo the following EXCEPT:
A: immediately remove the patient from the treatment room
B: Record treatment dosage recieved on the mechanical counter
C: Resent circuit breaker and continue treating
D. Calculate required remaining doseage - CORRECT ANSWERS-
immediately remove the patient from the treatment room
While the frequency of acquiring digital or hard copy portal images
varies, they should all be aquired - CORRECT ANSWERS-prior to or
on the first day of treatment
The approximate 5 year survival rate for stage II (T4 N0 M0) colorectal
cancer is - CORRECT ANSWERS-60-85%
The TD 5/5 for the rectum is - CORRECT ANSWERS-6000 cGy
Gadolinium is a common contrast agent utilized for which diagnostic
study? - CORRECT ANSWERS-6000 cGy
Which of the following is not an item checked during daily warm-up of
the linear accelerator? - CORRECT ANSWERS-MRI
,If a patient has been prescribed 120 cGy/fraction b.i.d. to a total dose
of 6000 cGy. How many fractions remain after delivering 1800 cGy? -
CORRECT ANSWERS-35
Wedge angle refers to: - CORRECT ANSWERS-angle through which
an isodose curve is tilted at the central axis at a specific depth
The normal prostate is located:
anterior to rectum
inferior to bladder
posterior to the symmphysis - CORRECT ANSWERS-all
The greatest occurrence of salivary neoplasms are found in the -
CORRECT ANSWERS-parotid gland
As identified in the treatment plan, which volume is the largest? -
CORRECT ANSWERS-Irradiated Volume
IF a patient begins to cough vigorously during treatment delivery, the
RT should - CORRECT ANSWERS-stop the treatment and check on
the patient and portal alignment
Radiographyically, which primary lesion can be described as having a
sunburst appearance? - CORRECT ANSWERS-Osteosarcoma
The most frequent site of a soft tissue sarcoma metastases is -
CORRECT ANSWERS-lung
Which of the following is not a pathogen?
A: viruses
B: protozoans
C: fungi
D: fomites - CORRECT ANSWERS-D
The Philadelphia chromosome is associated with which leukemia? -
CORRECT ANSWERS-CML
, The intersection point of the axis of rotation of the collimator and the
axis of rotation of the gantry defines what? - CORRECT ANSWERS-
Mechanical isocenter
The first sign of the acute radiation syndrome following a large
exposure of radiation is usually - CORRECT ANSWERS-Nausea
This is a common oncologic emergency associated with cancer.
Presenting symptoms include fatigue, lethargy, weakness, nausea,
dehydration, and decreased mental fuction - CORRECT ANSWERS-
Hypercalcemia
The majority of larynx tumors arise on this area - CORRECT
ANSWERS-glottis
Acute radiation effects include all of the following EXCEPT:
A: diarrhea
B: erythema
C: epilation
D: radiation pneumonitis - CORRECT ANSWERS-D
Which is the main advantage of used a split beam technique? (1/2
beam blocking) - CORRECT ANSWERS-preventing beam divergence
Which of the following would serve as the best method for protection
from a high-energy gamma source - CORRECT ANSWERS-
increasing distance from source
A radiotherapy patient has
right to confidentiality of all info regarding their care
right to refuse treatment - CORRECT ANSWERS-both
An ataxic patient is said to be - CORRECT ANSWERS-lacking
coordination
