RTBC- Image Acquisition| Exam Questions with Complete Answers

RTBC- Image Acquisition| Exam
Questions with Complete Answers
The thickness of inherent filtration within general use x-ray tube assemblies is equal
to approximately:
A) 0.5 mm aluminum equivalence (Al. eq)
B) 5 mm aluminum equivalence (Al. eq)
C) 0.5 mm lead equivalence (Al. eq)
D) 5 mm lead equivalence (Al. eq)

0.5 mm aluminum equivalence (Al. eq.)

If the half-value layer (HVL) of shielding material is equal to 2 mm, how
much radiation will transmit through 6 mm of this material?
A) 75% of the original quantity
B) 50% of the original quantity
C) 25% of the original quantity
D) 12.5% of the original quantity

12.5% of the original quantity

During a surgical procedure using three (3) minutes of fluoroscopy time, a
radiographer receives an effective dose of 1 millisievert (mSv). What effective dose
would be experienced by the radiographer if the fluoroscopy time is doubled?

, A) 0.5 mSv
B) 2 mSv
C) 4 mSv
D) 6 mSv

2 mSv

Which of the following describes the primary benefit of collimating the exposure
field size to only the required anatomy?
A) A decrease in the patient's effective dose
B) A decrease in the patient's skin dose
C) An increase in spatial resolution
D) An increase in receptor exposure

A decrease in the patient's effective dose

What term describes the thickness of a material that reduces the x-ray beam
quantity by half?
A) Half life
B) Fill factor
C) Half-value layer
D) Magnification factor

Half-value layer

What primary patient dose measurement is influenced by filtration?
A) Deep dose
B) Effective dose (EfD)
C) Equivalent dose (EqD)
D) Entrance skin dose (ESD)

Entrance skin dose (ESD)