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An artifact can be _____.
A. an object that is not part of the radiographed anatomy
B. an improper grid or warped cassette
C. patient motion
D. all answers
D. all answers
A ____ is an exaple of an exposure artifact.
A. dichronic stain
B. Pi line
C. pressure mark
D. foreign object
D. foreign object
A static mark artifact is created during ____ of the film.
A. development
B. all answers
C. handling
D. exposure
C. handling
What sort of artifact is a guide-shoe mark?
A. exposure artifact
B. handling artifact
C. storage artifact
D. processing artifact
D. processing artifact
Generally, most repeat exams are caused by ____ artifacts.
A. handling
B. exposure
C. processing
D. storage
B. exposure
A cassette that is improperly positioned can cause a _____ artifact.
A. blur
B. fog
C. double exposure
D. grid cut-off
D. grid cut-off
Misalignment of the processor turnaround assembly can cause ____.
A. guide-shoe marks
B. Pi lines
C. tree static
D. grid cut-off
A. guide-shoe marks
A greasy appearance of a film is usually caused by _____.
A. improper develpoer heat
B. inadequate washing
C. excess hardner chemicals
D. inadequate processing chemistry
B. inadequate washing
Lines that occur 3.14 inches apart on the finished radiograph are caused by ___.
A. grid cut-off during exposure
B. poor film-screen contact
C. misalignment of guide-shoes
D. chemical build-up on rollers
D. chemical build-up on rollers
Thin lines on the leading and trailing edge of a silm are ____.
A. emulsion build-up
B. Pi lines
C. guide-shoe marks
D. dichronic stains
C. guide-shoe marks
A bi-color chemical stain on a radiograph is called ______.
A. a curtain effect
B. a dichronic stain
C. a curtain effect and dichronic stain
D. hypo retention
B. a dichronic stain
Low humidity in the darkroom can cause ____.
A. brown stains
B. pressure marks
C. tree static
D. film fog
C. tree static
A streak of high optical density on the finished radiograph can be caused by _____.
A. light leaks in the cassette or darkroom
B. high humidity in the darkroom
C. inadequate washing in the processor
D. film boxes stacked too high in storage
A. light leaks in the cassette or darkroom
What can cause image blur on the finished radiograph?
A. patient motion
B. high humidity
C. chemical imbalance
D. all answers
A. patient motion
Kink marks are caused by ______.
A. light leaks
B. bending film
C. misaligned rollers
D. fingernails
D. fingernails
A quality assurance program monitors _____.
people
A quality control program is for?
A. CT scanners
B. film processors
C. x-ray tubes
D. all answers
D. all answers
Most quality control testing on radiographic equipment is done ______.
annually
The measured kVp should be within _____ of the kVp indicated on the console.
+/- 10%
Comparing the mR output at 50mA @ 0.2 sec, 100mA @ 0.1 sec, and 200mA @ 0.05 sec is part of a test for _____.
A. reproducibility
B. reciprocity
C. uniformity
D. linearity
D. linearity
Unlimited ESE is permitted by federal law during _____ procedures,
A. interventional
B. cineradiography
C. C-arm
D. routine
B. cineradiography
Quality control testing for computerized tomography must be performed on a ____ basis.
A. all answers
B. annual
C. monthy
D. daily/weekly
A. all answers
______ is used to test noise and uniformity on CT imaging systems.
A. a step wedge
B. a wire
C. AAPM five-pin insert
D. water bath
D. water bath
The standard for DICOM was developed by a committee of the?
NEMA and ACR
The consistant appearance of DICOM images on any compatable digital display device is achieved through ______.
A. SMPTE pattern
B. perceptual linearization
C. specular reflection
D. digital driving levels
B. perceptual linearization
The quality control standard for flat panel displays was released by ______ in 1998.
VESA
The task group 18 is a procedure manual for?
testing digital devices
A photometer is a ______.
A. luminescene meter
B. dosimeter
C. illuminance meter
D. TG-18 device
A. luminescene meter
A telescope photometer is used at what distance?
1 meter
Digital disply reflections and ambient light conditions are assessed with an?
illuminance meter
The TG18-LPV/LPH test is used to evaluate _______.
geometric distortion
Specular reflextion can be tested wit the
1. TG 18AD pattern
2. Ambient light turned off
3. Ambient light turned on
A. 1 and 2
B. 1 only
C. 1, 2 and 3
D. 1 and 3
C. 1, 2 and 3
T/F- Specular reflection can be assessed by only turning off the monitor in ambient light.
True
False
true
Spatial resolution of the digital display monitor is done with the ____ test pattern.
A. TG18-LN
B. TG18-AD
C. TG18-AFC
D. TG18-CX
D. TG18-CX
The qualitative evaluation of luminance response is measured with the ____ test tool.
A. TG18-CT
B. TG18-AD
C. TG18-LPV/LPH
D. TG18-LN
A. TG18-CT
Display noise is measured using the _____ test pattern.
TG18-AFC
Daily evaluation of the monitors should be done with the ______ test tool (pattern).
TG18-QC
The half value layer (HVL) is a measurement of the beams?
quality
Crossover is a radiographic problem because it decreases _____.
A. recorded detail
B. density
C. film speed
D. contrast
A. recorded detail
The Roentgen is a measure of the beams
A. intensity
B. energy
C. OID
D. quality
A. intensity
A cresent moon shaped dark artifact is caused by?
crimped film
The timer must be accurate to within ____?
5%
mAs linearity should be within ____?
10%
Hypo rention means that ____ was left in the emulsion after processing.
fixer
T/F- The reflective layer of an intensifying screen deflects light aways from the film.
True
False
False
Author
lunchbox
ID
73919
Card Set
230final
Description
Questions for neil's final
Updated
2011-03-20T01:13:28Z
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