MDCB Review |200 questions with verified answers
_______ complex immobilization devices, such as thermal plastic
Immobilization devices and foaming agent devices, to the treatment
couch will provide for tighter tolerance settings.
A: Indexing
B: Radiographing
C: Taping
D: Recycling Ans✓✓✓ A: Indexing
_______ is the degree to which the design of a particular user interface
takes into account how that piece of software fits into the overall
patient visit and the logic that is required by the user to figure out how
to use it.
A: Usability
B: User interface
C: Standards based interface
D: Proprietary interface Ans✓✓✓ A: Usability
________ is a type of shock that is caused by internal or external
bleeding.
A: Cardiogenic
B: Septic
C: Hypoglycemic
D: Hypovolemic Ans✓✓✓ D: Hypovolemic
,________ takes into consideration how much a machine will run in a
normal week.
A: Workload
B: Occupancy factor
C: Use factor
D: Barrier factor Ans✓✓✓ A: Workload
A craniospinal patient is being treated on the 6 MV Machine with a 100
SAD with the following field sizes: x=22 y1(inferior)=0 y2(superior)=17
The patient has a separation of 16 and is being treated midplane. What
is the angle needed to eliminate divergence from this field?
A: 10° on the brain field
B: 10° on the spine field
C: no collimation needed
D: 7° on the brain field Ans✓✓✓ C: No collimation needed
A diabetic patient who has taken his insulin and has been fasting for a
small bowel examination may begin to experience which of the
following symptoms?
A: Shaking, nervousness
B:: Cold, clammy skin
C: Warm, flushed, dry skin
,D: A and B
E: A and C Ans✓✓✓ D: A and B
Shaking, nervousness, cold and clammy skin
A door interlock system has been found to be in operable. This unit can
be operated only If:
A: The patient has been set up
B: The switch is not repairable
C: The radiation safety officer is present
D: None of the above Ans✓✓✓ D: None of the above
A dose of 3000 cGy is to be delivered at a depth of 8 cm at a PDD of 76.
What is the dose to an underlying organ at 14 cm at a PDD of 58?
A: 2289 cGy
B: 3947 cGy
C: 4231 cGy
D: 5172 cGy Ans✓✓✓ 2289 cGy
A dose of 5000 cGy is prescribed at axis in 25 fractions using a cobalt 60
unit at an 80 cm SAD. If a readout error resulted in a 75 cm SAD, the
actual delivered dose per fraction was:
A: 197 cGy
B: 228 cGy
, C: 243 cGy
D: 269 cGy Ans✓✓✓ B: 228 cGy
5000/25=200
I1/I2= (d2/d1)^2
x/200= (80/75)^2
A field of 75x50 cm (on skin) is required to treat a hemi-body patient.
The maximum CSF is 40x40 cm. The patient must be placed at a
minimum of ____ cm SSD. (Standard SSD on this machine is 100 cm).
A: 53.3
B: 155.6
C: 164.5
D: 187.5
E: 210.0 Ans✓✓✓ D: 187.5
Direct proportion equation
A more widely excepted procedure for assessing axillary node status
once the primary breast tumor has been identified is:
A: Specificity testing
B: Predictive value testing
C: Sentinel lymph node
D: Axillary node surgery Ans✓✓✓ D: Sentinel lymph node
_______ complex immobilization devices, such as thermal plastic
Immobilization devices and foaming agent devices, to the treatment
couch will provide for tighter tolerance settings.
A: Indexing
B: Radiographing
C: Taping
D: Recycling Ans✓✓✓ A: Indexing
_______ is the degree to which the design of a particular user interface
takes into account how that piece of software fits into the overall
patient visit and the logic that is required by the user to figure out how
to use it.
A: Usability
B: User interface
C: Standards based interface
D: Proprietary interface Ans✓✓✓ A: Usability
________ is a type of shock that is caused by internal or external
bleeding.
A: Cardiogenic
B: Septic
C: Hypoglycemic
D: Hypovolemic Ans✓✓✓ D: Hypovolemic
,________ takes into consideration how much a machine will run in a
normal week.
A: Workload
B: Occupancy factor
C: Use factor
D: Barrier factor Ans✓✓✓ A: Workload
A craniospinal patient is being treated on the 6 MV Machine with a 100
SAD with the following field sizes: x=22 y1(inferior)=0 y2(superior)=17
The patient has a separation of 16 and is being treated midplane. What
is the angle needed to eliminate divergence from this field?
A: 10° on the brain field
B: 10° on the spine field
C: no collimation needed
D: 7° on the brain field Ans✓✓✓ C: No collimation needed
A diabetic patient who has taken his insulin and has been fasting for a
small bowel examination may begin to experience which of the
following symptoms?
A: Shaking, nervousness
B:: Cold, clammy skin
C: Warm, flushed, dry skin
,D: A and B
E: A and C Ans✓✓✓ D: A and B
Shaking, nervousness, cold and clammy skin
A door interlock system has been found to be in operable. This unit can
be operated only If:
A: The patient has been set up
B: The switch is not repairable
C: The radiation safety officer is present
D: None of the above Ans✓✓✓ D: None of the above
A dose of 3000 cGy is to be delivered at a depth of 8 cm at a PDD of 76.
What is the dose to an underlying organ at 14 cm at a PDD of 58?
A: 2289 cGy
B: 3947 cGy
C: 4231 cGy
D: 5172 cGy Ans✓✓✓ 2289 cGy
A dose of 5000 cGy is prescribed at axis in 25 fractions using a cobalt 60
unit at an 80 cm SAD. If a readout error resulted in a 75 cm SAD, the
actual delivered dose per fraction was:
A: 197 cGy
B: 228 cGy
, C: 243 cGy
D: 269 cGy Ans✓✓✓ B: 228 cGy
5000/25=200
I1/I2= (d2/d1)^2
x/200= (80/75)^2
A field of 75x50 cm (on skin) is required to treat a hemi-body patient.
The maximum CSF is 40x40 cm. The patient must be placed at a
minimum of ____ cm SSD. (Standard SSD on this machine is 100 cm).
A: 53.3
B: 155.6
C: 164.5
D: 187.5
E: 210.0 Ans✓✓✓ D: 187.5
Direct proportion equation
A more widely excepted procedure for assessing axillary node status
once the primary breast tumor has been identified is:
A: Specificity testing
B: Predictive value testing
C: Sentinel lymph node
D: Axillary node surgery Ans✓✓✓ D: Sentinel lymph node
