CLOSED DOOR 2 Flashcards
There are no circumstances under which a technologist should be given an invulontary leave of absence due to pregnancy.
True
Patient dose is usually estimated by conducting simulated x-ray examination with?
Human phantoms and test objects
The frequency of x-ray examination being performed is increasing in all age groups.
True
Patient from diagnostic x-ray is most often report in?
Entrance skin exposure
Patient skin exposure can be measured indirectly by using a?
Nomogram
If the radiographic technique for a KUB calls for 40 mAs, what is the ESE when the output 75 mR/mAs (075 mGy or 75 uGy/mAs)?
300 mR
Acute skin effects from radiation exposure have been reported following
angiointerventional
For the average fluoroscopy exam the ESE is
4 R/min
An estimation of patient dose is reported as
Entrance skin exposure
Bone marrow dose
Gonadal dose
Bone marrow dose is measured
as an estimate from ESE
The most important variables in determining x-ray dose are the _ and the _
receptor speed
x-ray production efficiency
The simplest way to measure patient dose is to measure the
entrance skin exposure
The radiation dose monitor most frequently used to measure patient exposure is the
thermoluminescent dosimeter
If the output intensity of an x-ray machine is 6.4 mR/mAs at 80 kVp, what is the patient’s ESE from an exam done at 20 mAs at 80 kVp?
128 mR
The approximate average of bone marrow dose to the population of the United States is:
100 mR/yr
The genetically significant dose to the general public is important because of the risk of:
effects of the gene pool
What is the only acceptable techniques for mammography:
I. Screen/film
II. Digital
Glandular dose from mammography is approximately ______ of the ESE.
15%
Digital mammography results in lower dosage than screen/film mammography.
True
CT is considered a low-dose procedure.
False