Chapter 5 Test Flashcards
Variations for kvp accuracy should be within _____________%
a.) 5
b.) 1
c.) 10
d.) 2
a.) 5
In regards to an AEC system, the _____________ receives the current signal sent by the sensor and terminates the exposure.
a.) element
b.) backup timer
c.) detector
d.) comparator
d.) comparator
Which type of generator uses multiple sources of alternating current so that the voltage never drops to zero?
a.) three phase
b.) high frequency
c.) failing load
d.) single phase
a.) three phase
Central ray (CR) congruency is also known as:
a.) beam bucky tray alignment
b.) light field radiation field congruence
c.) linearity
d.) detent alignment
a.) beam bucky tray alignment
Radiation output should be reproducible to within:
a.) 5%
b.) 1%
c.) 10%
d.) 3%
a.) 5%
Selecting different mA and time settings to result in the same mAs is called:
a.) reciprocity
b.) linearity
c.) reproducibility
d.) accuracy
a.) reciprocity
If the kvp stated on the console matches the actual xray energy, this is called:
a.) reciprocity
b.) accuracy
c.) linearity
d.) reproducibility
b.) accuracy
The minimum filtration required for general purpose radiography and fluoroscopy is:
a.) 2.5 mm AL
b.) 2.0 mm AL
c.) 2.3 mm AL
d.) 3.5 mm AL
a.) 2.5 mm AL
Any variations between the stated kilovolt (peak) on the control panel and the measured kilovolt (peak) must be ___________%
a.) 5
b.) 20
c.) 10
d.) 2
a.) 5
Regarding linearity:
80 kvp and 10 mas is used for the first exposure and produces 50 mR of radiation output.
80 kvp and 20 mas is used for the second exposure what will the radiation output be for the second exposure?
a.) 25 mr
b.) 100 mr
c.) 200 mr
d.) 150 mr
b.) 100 mr
A high frequency generator can use current thats been altered to as much as ________ Hz before being rectified.
a.) 60
b.) 100,000
c.) 60,000
d.) 120
b.) 100,000
When the SID is 80 cm the actual SID should match the displayed SID within a range of:
a.) 8.0 cm
b.) 1.6 cm
c.) 2.0cm
d.) 0.8 cm
b.) 1.6cm
The xray beam and bucky tray must be aligned within _________% of the SID
a.) 5
b.) 10
c.) 2
d.) 1
d.) 1
The tube angulation indicator must be accurate to within ____________ degress.
a.) 5
b.) 1
c.) 10
d.) 2
a.) 5
Variations for mAs accuracy should be within ____________%
a.) 2
b.) 10
c.) 1
d.) 5
b.) 10
Xray system reciprocity has an acceptance parameter of
a.) 10%
b.) 5%
c.) 20%
d.) 15%
a.) 10%
When the SID is 72 inches, the central ray (CR) alignment should be within what distance of the indicated field center?
a.) 1.44 inches
b.) 0.72
c.) 0.44 inches
d.) 0.3 inches
b.) 0,72
What is the primary disadvantage of using a single phase, full wave rectified generator for xray production?
a.) low velocity xray beam
b.) high velocity xray beam
c.) highly penetrating xray beam
d.) low penetrating x ray beam
d.) low penetrating xray beam
Creating the same intensity of radiation each time a set of technical factors are used to create an exposure is:
Reproducibility
Beam quanitity is:
radiation output
Using the same mAs, but with different combinations of mA and time is:
Reciprocity
Sequential increases in mAs produces the same sequential increase in the exposure measured is:
Linearity
The area of the anode bombarded by projectile electrons is:
focal spot
Accuracy of collimated area is
Light field congruence
A 3 phase 12 pulse generator will produce how many pulses in one second?
a.) 1/1000
b.) 1/120
c.) 360
d.) 720
d.) 720
An x-ray generator that is used on the battlefield is called a:
a.) portable
b.) mobile
a.) portable
The SID indicator must be within ________ % of the actual SID.
a.) 10
b.) 2
c.) 5
d.) 1
b.) 2
What are the two main components of an AEC system?
a.) comparator
b.) grid
c.) stator
d.) detectors
a.) comparator
d.) detectors
Which type of generator would be used on the battlefield?
a.) mobile
b.) portable
b.) portable
A quality control program for radiographic equipment should include which of the following:
1.) visual inspection
2.) enviromental inspection, and or
3.) performance testing
a.) 2 and 3 only
b.) 1, 2 and 3
c.) 1 and 3 only
d.) 1 and 2 only
b.) 1, 2 and 3