問題一覧
1
What are the prime exposure factors?
kVp, mAs, and SID
2
Changes in kVp affect all of the following expect _________.
number of electron boiled off the filament
3
An increase in MAs causes ________ in beam quality and _________ in beam intensity.
no change; an increase
4
There is a direct relationship between the quantity of x-rays and the ___________.
milliamperage
5
If MAs is increased from 20 MAs to 40 MAs, the patient dose will ________
be doubled
6
Beam penetrability is increased if ________ is/are increased.
kVp
7
A _____% increase in kVp may be accompanied by a _____% reduction in MAs to produce the same image receptor response at a slightly reduced contrast scale.
5; 30
8
At least ____% change in MAs is necessary to produce a visible change in the image.
30
9
Which technique would give the highest patient dose?
65 kVp/300mA @ 0.1 sec
10
Patient thickness should be measured with the ________.
caliper
11
The small focal sport will provide a ________.
finer detail of image
12
Beam quantity is improved when the _________ is increased, but _________ has no effect on beam quantity.
kilovoltage; milliamperage
13
Both beam quality and beam quantity are increased by __________.
increasing kVp and using a 3-phase generator
14
Added filtration has the effect of ________ the beam quality and __________ patient dose.
increasing; reducing
15
List the following tissues in order from the most radiolucent to the most radiopaque.
Lung, fat, muscle, bone
16
Which medical condition may require a lower technique?
Emphysema
17
When only the intensity needs to be changed, only the _______ should be adjusted.
mAs
18
Sharpness of detail can be improved by increasing _________.
SID
19
Foreshortening is caused by a(n) ______________.
angled body part when the beam is perpendicular to the image receptor.
20
With automatic exposure techniques the exposure is terminated when the optimum _____ is reached.
OD