Radiation Therapy Board Review Questions
and Answers| Latest Update
Which of the following brain tumors have the tendency to spread via the CSF?
A. Glioma
B. Astrocytoma
C. Medulloblastoma
D. Oligodendroglioma C. Medulloblastoma
Medulloblastoma, Ependymoma, pineal gland tumors have a high potential to spread through
the CSF.
Which of the following brain tumors is seen more frequently in the adult?
A. Medulloblastoma
B. Ependymoma
C. Pituitary adenoma
D. Glioma D. Glioma
The normal range for RBC's is:
A. 12.0 - 16.0 g/Dl
B. 17% - 45%
C. 3.90 - 5.40 million/mm³
D. 3.90 - 10.8 thousand/mm³
E. 150,000 - 425,000/mm³ C. 3.90 - 5.40 million/mm³
,The normal range for platelets is:
A. 12.0 - 16.0 g/Dl
B. 17% - 45%
C. 3.90 - 5.40 million/mm³
D. 3.90 - 10.8 thousand/mm³
E. 150,000 - 425,000/mm³ E. 150,000 - 425,000/mm³
The normal range for lymphocytes is:
A. 12.0 - 16.0 g/Dl
B. 17% - 45%
C. 3.90 - 5.40 million/mm³
D. 3.90 - 10.8 thousand/mm³
E. 150,000 - 425,000/mm³ B. 17% - 45%
The normal range for WBC's is:
A. 12.0 - 16.0 g/Dl
B. 17% - 45%
C. 3.90 - 5.40 million/mm³
D. 3.90 - 10.8 thousand/mm³
E. 150,000 - 425,000/mm³ D. 3.90 - 10.8 thousand/mm³
The normal range for hemoglobin is:
,A. 12.0 - 16.0 g/Dl
B. 17% - 45%
C. 3.90 - 5.40 million/mm³
D. 3.90 - 10.8 thousand/mm³
E. 150,000 - 425,000/mm³ A. 12.0 - 16.0 g/Dl
How many degrees is the target angled to dissipate heat in an X-ray tube? 7 - 20 degrees
Increasing kVp will (increase/decrease) contrast and (increase/decrease) density.
Decrease; increase
Prophylactic cranial irradiation for ALL is administered to a total dose of:
A. 1200 cGy
B. 1800 cGy
C. 3000 cGy
D. 4500 cGy
E. 6000 cGy B. 1800 cGy
The treatment time for a field requiring 350 monitor units while the linear acellerator dose rate
is 220 units/minute is:
A. .394 minutes
B. .629 minutes
C. 1.59 minutes
D. 2.52 minutes C. 1.59 minutes
, Placing marks on the central axis only is:
A. Sufficient for daily realignment and targeting
B. Sufficient when target margins are small
C. Adequate for treating small fields
D. Insufficient for daily realignment and targeting D. Insufficient for daily realignment and
targeting
*Marks should be placed on the central axis and along coordinate planes to assure the patient
and location target is accurately reproduced.
During total CNS irradiation, the patient is:
A. Supine with an extended chin
B. Supine with chin flexed
C. Prone with chin slightly extended
D. Prone with chin flexed C. Prone with chin slightly extended
Electron contamination from high energy photon beams may result from photon interactions
with the:
A. Room air
B. Collimators
C. Bolus
D. Lucite trays B. Collimators
Lucite is often used as the material for positioning devices. One major concern when this
material is in the path of the treatment beam is:
and Answers| Latest Update
Which of the following brain tumors have the tendency to spread via the CSF?
A. Glioma
B. Astrocytoma
C. Medulloblastoma
D. Oligodendroglioma C. Medulloblastoma
Medulloblastoma, Ependymoma, pineal gland tumors have a high potential to spread through
the CSF.
Which of the following brain tumors is seen more frequently in the adult?
A. Medulloblastoma
B. Ependymoma
C. Pituitary adenoma
D. Glioma D. Glioma
The normal range for RBC's is:
A. 12.0 - 16.0 g/Dl
B. 17% - 45%
C. 3.90 - 5.40 million/mm³
D. 3.90 - 10.8 thousand/mm³
E. 150,000 - 425,000/mm³ C. 3.90 - 5.40 million/mm³
,The normal range for platelets is:
A. 12.0 - 16.0 g/Dl
B. 17% - 45%
C. 3.90 - 5.40 million/mm³
D. 3.90 - 10.8 thousand/mm³
E. 150,000 - 425,000/mm³ E. 150,000 - 425,000/mm³
The normal range for lymphocytes is:
A. 12.0 - 16.0 g/Dl
B. 17% - 45%
C. 3.90 - 5.40 million/mm³
D. 3.90 - 10.8 thousand/mm³
E. 150,000 - 425,000/mm³ B. 17% - 45%
The normal range for WBC's is:
A. 12.0 - 16.0 g/Dl
B. 17% - 45%
C. 3.90 - 5.40 million/mm³
D. 3.90 - 10.8 thousand/mm³
E. 150,000 - 425,000/mm³ D. 3.90 - 10.8 thousand/mm³
The normal range for hemoglobin is:
,A. 12.0 - 16.0 g/Dl
B. 17% - 45%
C. 3.90 - 5.40 million/mm³
D. 3.90 - 10.8 thousand/mm³
E. 150,000 - 425,000/mm³ A. 12.0 - 16.0 g/Dl
How many degrees is the target angled to dissipate heat in an X-ray tube? 7 - 20 degrees
Increasing kVp will (increase/decrease) contrast and (increase/decrease) density.
Decrease; increase
Prophylactic cranial irradiation for ALL is administered to a total dose of:
A. 1200 cGy
B. 1800 cGy
C. 3000 cGy
D. 4500 cGy
E. 6000 cGy B. 1800 cGy
The treatment time for a field requiring 350 monitor units while the linear acellerator dose rate
is 220 units/minute is:
A. .394 minutes
B. .629 minutes
C. 1.59 minutes
D. 2.52 minutes C. 1.59 minutes
, Placing marks on the central axis only is:
A. Sufficient for daily realignment and targeting
B. Sufficient when target margins are small
C. Adequate for treating small fields
D. Insufficient for daily realignment and targeting D. Insufficient for daily realignment and
targeting
*Marks should be placed on the central axis and along coordinate planes to assure the patient
and location target is accurately reproduced.
During total CNS irradiation, the patient is:
A. Supine with an extended chin
B. Supine with chin flexed
C. Prone with chin slightly extended
D. Prone with chin flexed C. Prone with chin slightly extended
Electron contamination from high energy photon beams may result from photon interactions
with the:
A. Room air
B. Collimators
C. Bolus
D. Lucite trays B. Collimators
Lucite is often used as the material for positioning devices. One major concern when this
material is in the path of the treatment beam is:
