Half Life
Dose Limits
Name that Formula
Random Questions
Ethics
100
Half life of Cobalt 60 is
A 10 years
B 5.25 years
C 12.5 years
D 8.25 years
B 5.25 years !
100
Occupational whole body dose limit is
A 1 mSv (100 mrem annual)
B 0.5 mSv (50 mrem monthly)
C 50 mSv (5rem annual)
D 500 mSv (50 rem annual)
C 50 mSv (5 rem annua) !
100
(FS1/2 x Depth/SSD) + (FS2/2 x Depth/SSD)
GAP Formula !!
100
What color is the radiation sign on the door of the treatment machine, or in the department
Yellow background with a burgundy propellor
100
What is maleficence
act of harm or evil , with intention OR negligence!
200
Half life of Iridium 192 is
A 90 days
B 74 months
C 90 hours
D 74 days
D 74 days !
200
Occupational lens of eye dose limit is
A 1 mSv (100 mrem annual)
B 0.5 mSv (50 mrem monthly)
C 50 mSv (5rem annual)
D 500 mSv (50 rem annual)
C 50 mSv (5 rem annual) !
200
I1/I2 = d2(squared) / d1(squared)
INVERSE SQUARE !
200
What is the D-max of a 6 Mv photon beam
1.5 cm !
200
What is the difference between libel and slander
Libel is written defamation !
Slander is spoken defamation !
300
Half life of Iodine 131 is
A 8 days
B 10 months
C 8 months
D 10 days
A 8 days !
300
Occupational skin dose limit is
A 1 mSv (100 mrem annual)
B 0.5 mSv (50 mrem monthly)
C 50 mSv (5rem annual)
D 500 mSv (50 rem annual)
D 500 mSv (50 rem annual) !
300
Dose/output x TMR x Sc x Sp x OCF (if needed)
SAD Calculation !
300
The GTV target volume contains
Visual or gross tumor volume!
300
What is beneficence
performing an action that benefits others!
400
Half Life of Radium 223 is
A 15.4 minutes
B 11.4 days
C 8.4 months
D 17.4 days
B 11.4 days !
400
Public whole body dose limit is
A 1 mSv (100 mrem annual)
B 0.5 mSv (50 mrem monthly)
C 50 mSv (5rem annual)
D 500 mSv (50 rem annual)
A 1 mSv (100 mrem annual) !
400
Dose / PDD x electron cone factor
ELECTRON MU !
400
When considering the shielding requirements for a treatment room, which two factors are used
Workload (W) and Occupancy (T) !
400
What is veracity
The duty to tell the truth and avoid deception!
500
Half life of Yttrium 90 is
A 2.7 minutes
B 2.7 days
C 2.7 hours
D 2.7 months
B 2.7 days !
500
Embryo/Fetal dose limit in declared pregnancy is
A 1 mSv (100 mrem annual)
B 0.5 mSv (50 mrem monthly)
C 50 mSv (5rem annual)
D 500 mSv (50 rem annual)
B 0.5 mSv (50 mrem monthly) !
500
4A / P
EQUIVALENT SQUARE!
500
Radiation absorbed dose is
A the # of radioactive disintegrations per unit of time
B The amount of energy absorbed per mass of any material (not limited to air)
C amount of ionization produced by photons in air
B The amount of energy absorbed per mass of any material, not limited to air !
500
true or false
"It is the physicians responsibility to obtain informed consent explaining the risks, benefits, alternative options, and outcome if the recommended treatment is not accepted"
TRUE !