Which of the following does not ionize directly?
A. Proton
B. Neutron
C. Alpha particle
D. Electron
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B. Neutron
When treating the whole brain which drug is used to reduce radiation induced
edema?
a. antiobiotics
,b. corticosteroids
c. diuretics
d. antihistamines
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b. corticosteroids
What is the therapeutic radio if the normal tissue tolerance is 5000 cGy and the lethal
dose for the tumor is 4000?
a. .80
b. 1.25
c. 1.56
d. 2.10
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b. 1.25
To verify that the radiation field and the light field are aligned on a 10 MV linear
accelerator you could use the following:
a. tissue equivalent phantom and an ionization chamber
b. mechanical distance indicator and paper
c. a shielding block and readi-pak x-ray film
d. readi-pak x-ray film, a pen and a ruler
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, d. readi-pak x-ray film, a pen and a ruler
Which of the following is the MOST radiosensitive structure?
A. Liver
B. spine
C. brain stem
D. optic chiasm
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A. Liver
A patient is 20 cm thick. You are to give 3000 cGy to midline weighted 2:1/right to left.
The %dd for a depth of 10 cm is .641. What is the given dose to the left side?
a. 1560 cGy
b. 2340 cGy
c. 3120 cGy
d. 4680 cGy
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a. 1560 cGy
What is the technique in which a skin cancer is removed and examined one layer at a
time?
A. Curettage
, B. Cryosurgery
C. Moh's surgery
D. Dermobrasion
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C. Moh's surgery
Effects for which the severity of the effect in the individual varies with the radiation
dose, and a threshold usually exists is called:
A. Stochastic
B. Deterministic
C. Acute
D. Protracted
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B. Deterministic
If a patient received a tumor dose of 250 cGy per day at the 79.2% dd, what is the
daily maximum subcutaneous dose?
a. 198 cGy
b. 250 cGy
c. 316 cGy
d. 405 cGy
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A. Proton
B. Neutron
C. Alpha particle
D. Electron
Give this one a try later!
B. Neutron
When treating the whole brain which drug is used to reduce radiation induced
edema?
a. antiobiotics
,b. corticosteroids
c. diuretics
d. antihistamines
Give this one a try later!
b. corticosteroids
What is the therapeutic radio if the normal tissue tolerance is 5000 cGy and the lethal
dose for the tumor is 4000?
a. .80
b. 1.25
c. 1.56
d. 2.10
Give this one a try later!
b. 1.25
To verify that the radiation field and the light field are aligned on a 10 MV linear
accelerator you could use the following:
a. tissue equivalent phantom and an ionization chamber
b. mechanical distance indicator and paper
c. a shielding block and readi-pak x-ray film
d. readi-pak x-ray film, a pen and a ruler
Give this one a try later!
, d. readi-pak x-ray film, a pen and a ruler
Which of the following is the MOST radiosensitive structure?
A. Liver
B. spine
C. brain stem
D. optic chiasm
Give this one a try later!
A. Liver
A patient is 20 cm thick. You are to give 3000 cGy to midline weighted 2:1/right to left.
The %dd for a depth of 10 cm is .641. What is the given dose to the left side?
a. 1560 cGy
b. 2340 cGy
c. 3120 cGy
d. 4680 cGy
Give this one a try later!
a. 1560 cGy
What is the technique in which a skin cancer is removed and examined one layer at a
time?
A. Curettage
, B. Cryosurgery
C. Moh's surgery
D. Dermobrasion
Give this one a try later!
C. Moh's surgery
Effects for which the severity of the effect in the individual varies with the radiation
dose, and a threshold usually exists is called:
A. Stochastic
B. Deterministic
C. Acute
D. Protracted
Give this one a try later!
B. Deterministic
If a patient received a tumor dose of 250 cGy per day at the 79.2% dd, what is the
daily maximum subcutaneous dose?
a. 198 cGy
b. 250 cGy
c. 316 cGy
d. 405 cGy
Give this one a try later!
