MDCB Practice Set 2 - Test 5 - Exam
Questions With 100% Verified Answers
1. A computer network that is limited to a single division or small
group in one geographical
location is called a:
A. Wide Area Network
B. Distributed Switch Network
C. Local Area Network
D. Discrete Network -
correct answer ✅C
2. From the techniques listed below, select the least desirable
method for treating a 3cm non-
secreting pituitary adenoma.
A. opposed lateral fields
B. opposed laterals plus a vertex field
C. non-coplanar fields
D. stereotactic radiosurgery -
correct answer ✅A
3. The five year cure rate for a prostate cancer tumor treated with
primary radiation is:
,MDCB Practice Set 2 - Test 5 - Exam
Questions With 100% Verified Answers
A. 5 - 10%
B. 25 - 30%
C. 50 - 70%
D. 75 - 95% -
correct answer ✅D
4. A lung tumor is to be treated utilizing a 90 degree arc. For a
target volume centered 6.0 cm
below the skin surface, how far below the skin surface should the
isocenter be placed?
A. 2.5 cm
B. 6.0 cm
C. 9.0 cm
D. 12.0 cm -
correct answer ✅C
5. A patient is normally treated with 18 MV photons on a linear
accelerator that has a target-to-
tray distance of 61.4 cm. The machine breaks down and the patient
is moved to a 6 MV linear
, MDCB Practice Set 2 - Test 5 - Exam
Questions With 100% Verified Answers
accelerator that has a target-to-tray distance of 57.8 cm. To ensure
that the patient is properly
treated, the medical dosimetrist should consider doing which of the
following?
A. recalculating the monitor units
B. use the same isodose distribution
C. use the original customized field-defining blocks
D. using new field sizes if the treatment source-to-surface distance
(SSD) is the same -
correct answer ✅A
6. Very accurate specification of dose at depth in a wedged field
necessitates that the medical
dosimetrist accounts for which of the following factors?
A. same central axis percent depth dose that occurs in a wedged
field
B. wedge transmission factor is measured in air or in tissue
C. no variations of the wedge transmission factor with field size
D. reduction in collimator scatter that is reaching the patient -
correct answer ✅B
Questions With 100% Verified Answers
1. A computer network that is limited to a single division or small
group in one geographical
location is called a:
A. Wide Area Network
B. Distributed Switch Network
C. Local Area Network
D. Discrete Network -
correct answer ✅C
2. From the techniques listed below, select the least desirable
method for treating a 3cm non-
secreting pituitary adenoma.
A. opposed lateral fields
B. opposed laterals plus a vertex field
C. non-coplanar fields
D. stereotactic radiosurgery -
correct answer ✅A
3. The five year cure rate for a prostate cancer tumor treated with
primary radiation is:
,MDCB Practice Set 2 - Test 5 - Exam
Questions With 100% Verified Answers
A. 5 - 10%
B. 25 - 30%
C. 50 - 70%
D. 75 - 95% -
correct answer ✅D
4. A lung tumor is to be treated utilizing a 90 degree arc. For a
target volume centered 6.0 cm
below the skin surface, how far below the skin surface should the
isocenter be placed?
A. 2.5 cm
B. 6.0 cm
C. 9.0 cm
D. 12.0 cm -
correct answer ✅C
5. A patient is normally treated with 18 MV photons on a linear
accelerator that has a target-to-
tray distance of 61.4 cm. The machine breaks down and the patient
is moved to a 6 MV linear
, MDCB Practice Set 2 - Test 5 - Exam
Questions With 100% Verified Answers
accelerator that has a target-to-tray distance of 57.8 cm. To ensure
that the patient is properly
treated, the medical dosimetrist should consider doing which of the
following?
A. recalculating the monitor units
B. use the same isodose distribution
C. use the original customized field-defining blocks
D. using new field sizes if the treatment source-to-surface distance
(SSD) is the same -
correct answer ✅A
6. Very accurate specification of dose at depth in a wedged field
necessitates that the medical
dosimetrist accounts for which of the following factors?
A. same central axis percent depth dose that occurs in a wedged
field
B. wedge transmission factor is measured in air or in tissue
C. no variations of the wedge transmission factor with field size
D. reduction in collimator scatter that is reaching the patient -
correct answer ✅B
