Deck 22: Digital Radiographic Quality Control

Question 1

Specular reflection is reduced with the use of _____.

A) improved anti-reflective coating
B) brighter ambient lighting
C) color monitors
D) larger monitors

Answer 1

improved anti-reflective coating

Question 2

The quality control standard for flat panel displays was released by _____ in 1998.

A) DIN
B) SMPTE
C) NEMA
D) VESA

Answer 2

NEMA

Question 3

A standard pattern made to measure the resolution of digital display systems is called the _____.

A) VESA pattern
B) SMPTE pattern
C) Gray Scale Display Function
D) DICOM standard

Answer 3

SMPTE pattern

Question 4

Specular reflection can be assessed by only turning off the monitor in ambient light.

Question 5

When evaluating the test pattern for geometric distortion,all lines should appear _____.

A) blue
B) dashed
C) straight
D) curved

Question 6

There are _____ types of photometers commonly used.

A) 2
B) 4
C) 6
D) 8

Question 7

The Task Group Report 18 is a procedure manual for _____.

A) evaluating the Gray Scale Display Function
B) testing digital display devices
C) evaluating the SMPTE pattern
D) testing doing CT exams

Question 8

Specular reflection can be tested with the _____.
I. TG 18-AD pattern
II. ambient light turned on
III. ambient light turned off

A) I only
B) I & II only
C) I & III only
D) I, II & III

Question 9

The TG18-LPV/LPH test is used to evaluate _____.

A) display noise
B) luminance response
C) reflection
D) geometric distortion

Question 10

A telescope photometer is used at _____.

A) close proximity
B) 1 meter
C) a 35° angle
D) a 50° angle

Question 11

SMPTE stands for the _____.

A) Standards of Medical Practice and Television Electronics
B) Standards of Medical Practice and Technical Electronics
C) Society of Motion Picture and Television Engineers
D) Society of Medical Physicians and Technical Engineers

Question 12

Digital display reflections and ambient light conditions are assessed with a(n)_____.

A) illuminance meter
B) near-range photometer
C) luminescence meter
D) TG-18 test device

Question 13

The qualitative evaluation of luminance response is measured with the _____ test tool.

A) TG18-AD
B) TG18-CT
C) TG18-LPV/LPH
D) TG18-LN

Question 14

Medical images are transferred using the _____ standard.

A) VESA
B) SMPTE
C) DIN
D) DICOM

Question 15

Luminance response can be tested with a(n)_____.
I. near-range photometer
II. telescope photometer
III. illuminance meter

A) I only
B) II only
C) III only
D) I or II

Question 16

The consistent appearance of DICOM images on any compatible digital display device is achieved through _____.

A) perceptual linearization
B) SMPTE pattern
C) specular reflection
D) digital driving levels

Question 17

Spatial resolution of the digital display monitor is done with the _____ test pattern.

A) TG18-CX
B) TG18-AFC
C) TG18-AD
D) TG18-LN

Question 18

Most of the quality control testing of digital display devices is performed with the use of _____ test patterns.

A) SMPTE
B) AAPM TG18
C) DIN
D) VESA

Question 19

A photometer is a _____.

A) TG-18 test device
B) dosimeter
C) luminescence meter
D) illuminance meter

Question 20

The standard for Digital Imaging and Communication was developed by a committee of the _____.

A) ACR and DIN
B) DIN and NEMA
C) ACR and NEMA
D) ACR and VESA

Question 21

Daily evaluation of the monitors should be done with the _____ test tool.

A) TG18-LPV/LPH
B) TG18-QC
C) TG18-LN
D) TG18-AD

Question 22

A continuous quality control program for digital display devices should include _____.
I. acceptance testing of any new devices
II. routine quality control
III. periodic review of the program by a medical physicist
IV. annual and post-repair performance evaluations

A) II only
B) I, II & IV
C) II, III & IV
D) I, II, III & IV

Question 23

Display noise is measured using the _____ test pattern.

A) TG18-QC
B) TG18-AD
C) TG18-AFC
D) TG18-LN

Question 24

Daily quality control testing is done by the medical physicist.

A) True
B) False

Question 25

Veiling glare can be evaluated with a VG18 testing pattern.