Deck 22: Digital Radiographic Quality Control

Question 1

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

Answer 1

TG18-CT

Question 2

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

Answer 2

perceptual linearization

Question 3

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

Answer 3

Society of Motion Picture and Television Engineers

Question 4

A photometer is a _____________________.

A) TG18 test device
B) dosimeter
C) luminescence meter
D) illuminance meter

Question 5

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 6

Specular reflection is reduced with the use of __________________.

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

Question 7

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

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

Question 8

There are _______ types of photometers commonly used.

A) two
B) four
C) six
D) eight

Question 9

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

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

Question 10

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

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

Question 11

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 12

Specular reflection can be tested with the _______________. I. TG18-AD pattern
II) ambient light turned on
III) ambient light turned off

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

Question 13

A telescope photometer is used at __________.

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

Question 14

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

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

Question 15

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

A) illuminance meter
B) near-range photometer
C) luminescence meter
D) TG18 test device

Question 16

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

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

Question 17

Display noise is measured using the ____________ test pattern.

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

Question 18

Medical images are transferred using the ____________ standard.

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

Question 19

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 20

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 21

Daily quality control testing is done by the medical physicist.

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, and IV
C) II, III, and IV
D) I, II, III, and IV

Question 23

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

Question 24

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