Chapter 35 Flashcards
If a technologist is exposed to 4 mGy/hr for 45 minutes during a fluoroscopy exam, what will her total exposure be?
3 mGy
The NCRP is the:
National Council of Radiation Protection
When using the inverse square law during fluoroscopy, the patient should be considered a/an _____________ source of radiation.
point
Exposure is measured by multiplying ______________ by ________________.
exposure rate, exposure time
The best approach to manage occupational radiation exposure is to:
Follow the concept of ALARA
T/F: Effective dose is the equivalent to whole-body dose.
True
The first radiation health physicists worked with:
the atom bomb
T/F: Dose to an individual is directly related to technique used, not to duration of exposure.
False
Health physics is concerned with minimizing radiation dose to:
a. radiation physicists
b. all of the above
c. the public
d. radiation workers
b. all of the above
T/F: TVL is defined as the thickness of absorber that reduces radiation intensity to 1/8th its original value.
False
If a technologist is receiving2 mGy/hr standing 1 foot from the patient during fluoroscopy what is his rate of exposure when he steps back to a; distance of 2 feet from the patient?
.50 mGy/hr
The three cardinal principals of radiation protection involve:
time, distance and shielding
T/F: he concept of effective dose accounts for the relative radiosensitivity of various tissues and organs.
True
T/F: Equivalent whole-body dose is the weighted average of the radiation dose to various organs and tissues.
True
The assumed constant Kilovolt Peak for diagnostic imaging is?
100 kVp
