Post processing
What function is used to control the display brightness of an image?
A. window width
B. Histogram
C. Window level
D. Region of interest
C. Window level
How many bits are in a byte?
A. 10
B. 5
C. 8
D. 2
C. 8
What does DICOM stand for?
A. Digital imaging and communication in medicine
B. Digital imaging and contrast in medicine
C. Dim imaging and communication in medicine
D. Digital Imaging and communication in monitors
A. Digital Imaging and communication in medicine
What is a computer that provides data or application services?
A. Hardware
B. Software
C. Server
D. Network
C. server
What does high contrast show?
A. lots of shades of gray
B. Black and white
C. rainbow colors
B. Black and White
What does increasing window level do to a radiographic image?
A. decrease contrast
B. Increase brightness
C Increase contrast
D. Decrease brightness
B. increase brightness
What kind of relationship does Spatial resolution have with matrix size?
A. Inverse
B. Direct
C. None
B. Direct
What is it called when one or more networks are administratively controlled by one authority?
A. Extranet
B. Intranet
C. LAN
D. WAN
B. Intranet
A patient is being flown to a different hospital, which of these networks are used to share images?
A. HIS
B. WAN
C. LAN
D. DICOM
B. WAN
What does Brightness in radiographic imaging refer to?
A. The difference between adjacent densities
B. The overall lightness and darkness of an image
C. Window width
D. A&C
B. The overall brightness and darkness of an image
What technique is used to combine multiple images into a single radiograph?
A. equalization
B. Image fusing
C. Stitching
D. rescaling
C. stitching
For the best image quality, the viewer should be positioned how relative to the LCD screen?
A. 2 feet away
B. At any angle
C. Perpendicular to the screen
D. Both A&B
C. perpendicular to the screen
What is the formula for calculating image file size?
A. X*Y (B/8)
B X/Y-B+8
C. X-Y*B/8
D. X+8*Y-B
A. X*Y (B/8)
Which BMI platform can schedule patient appointments and issue reminders?
A. HIS
B. RIS
C. PACS
D. A&B
D. A&B
As tissue thickness decreases, contrast ______
A. Stays the same
B. Increases
C. Decreases
D. None of the above
B. increases
Which of the following statements is not true regarding electronic masking?
A. It does not replace proper collimation
B. It should be used cautiously to avoid obscuring important diagnostic details.
C. Is applied with black overlays to prevent bright display monitor light blinding the viewer.
D. It eliminates all unnecessary anatomy.
D. It eliminates all unnecessary anatomy
How does increased ambient lightning affect a display monitors contrast?
A. increases it.
B. Has no effect
C. Decreases it
D. Enhances pixel density
C. Decreases it
Which of the following are subspecialties of Biomedical informatics?
A. Translational bioinformatics
B. Clinical research informatics
C. Public health informatics
D. All of the above
D. All of the above
What is the initiative that promotes the use of DICOM and HL7 standards?
A. IHE
B. LAN
C. BMI
D. SOP
A. IHE
Which term best describes the range of brightness levels displayed in an image?
A. Dynamic range
B. Pixel density
C. Contrast index
D. Exposure Index
A. Dynamic range
What is the primary function of the region of interest in post processing?
A. to assess pixel values and enhance a specific area.
B. to control brightness and contrast
C. to adjust the overall image size
D. to replace proper collimation
A. To assess pixel values and enhance a specific area
What is veil glare in radiographic imaging?
A. A phenomenon where ambient light reflections decrease contrast
B. A condition where a bright display monitor light overwhelms the eyes
C.A type of image distortion caused by over-exposure
D. A reduction in spatial resolution due to improper collimation.
B. A condition where a bright display monitor light overwhelms the eyes.
What classes of information make up a service object pair?
A. Object class
B. Medical class
C. Service class
D. A&C
D. A&C
A LAN can communicate to computers in the same hospital.
A. True
B. False
A. True
How does Bit depth affect contrast?
A. Having greater bit depth gives more shades of gray
B. Having greater bit depth gives less shades of gray
C. Having lesser bit depth gives more shades of gray
D. None of the above
A. Having greater bit depth gives more shades of gray