RTBC DIGITAL RADIOGRAPHY ASSESSMENT QUESTIONS AND ANSWERS (ALREADY GRADED A+)
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RTBC DIGITAL RADIOGRAPHY ASSESSMENT
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RTBC DIGITAL RADIOGRAPHY ASSESSMENT
RTBC DIGITAL RADIOGRAPHY ASSESSMENT QUESTIONS AND ANSWERS (ALREADY GRADED A+)RTBC DIGITAL RADIOGRAPHY ASSESSMENT QUESTIONS AND ANSWERS (ALREADY GRADED A+)RTBC DIGITAL RADIOGRAPHY ASSESSMENT QUESTIONS AND ANSWERS (ALREADY GRADED A+)
Which of the following factors would produce a radiographic image ...
RTBC DIGITAL RADIOGRAPHY
ASSESSMENT QUESTIONS AND
ANSWERS (ALREADY GRADED A+)
Which of the following factors would produce a radiographic image with the highest
spatial resolution - ANSWER-Increased matrix size
The specifications for an x-ray imaging system indicate the detector can capture
exposure values from 0.1 microgray to 1,000. This quality of the x-ray system is called: -
ANSWER-Dynamic range
Which component of an indirect capture flat-panel detector converts incident x-ray
photons into visible light photons? - ANSWER-Scintillation Layer
Modulation Transfer Function(MFT) is also referred to as which of the following? -
ANSWER-Image Fidelity
Consider an x-ray exposure that results in a receptor exposure of 0.001 microgray. The
resulting image is expected to display which of the following? - ANSWER-Quantum
mottle
Which of the listed radiopgraphic matrices will create an image with the smallest pixels?
- ANSWER-2048 x 2048
Which of the following represents the highest Modulation Transfer Function (MTF)
score? - ANSWER-MTF of 1.0
The phosphor layer of the computed radiography (CR) imaging plate is composed of: -
ANSWER-Barium Fluorohalides and Europlium Activators
When should a computed radiography (CR) imaging plate be processed to prevent loss
of the latent image? - ANSWER-As soon after exposure possible
Blotchy appearance caused by an insufficient number of photons reaching the image
receptor is known as: (select three) - ANSWER-Quantum noise
Quantum mottle
Photon starvation
Exposure latitude is define as the: - ANSWER-Range of exposure that produces quality
images at an appropriate patient dose
, Out of the given line pairs per millimeter selections for spatial frequency, which would
represent the highest Modulation Transfer Function (MTF) score? - ANSWER-1 lp/mm
Which two of the following flat-panel detector components can collect and convert light
into an electrical signal? (select two) - ANSWER-Photodiode
Charge-coupled device (CCD)
Which of the following devices may be used in place of the photomultiplier tube (PMT)
within a computed radiography (CR) image reader system? - ANSWER-Charge-coupled
device (CCD)
Which of the following materials is responsible for storing the latent image within the
computed radiography (CR) imaging plate? - ANSWER-Photo-stimulable phosphor
(PSP)
Which two of the following materials may be used in the construction of the computed
radiography (CR) imaging plate outer cassette? (select two) - ANSWER-Carbon filter
Plastic
Which of the following line pairs per millimeter selections would represent the highest
spatial frequency? - ANSWER-9 lp/mm
What is the relationship between spatial frequency and the Modulation Transfer
Function (MTF)? - ANSWER-Indirect relationship
What step in digital image processing identifies the useful exposure values ("values of
interest") in raw image data? - ANSWER-Histogram analysis
The Modulation Transfer Function(MTF) evaluates the: - ANSWER-Ability of the system
to transfer the information into the image
When compared to the computed radiography(CR). digital radiography(DR) is: -
ANSWER-Faster, and produces higher quality images
Which of the following makes up the digital matrix of the image file? - ANSWER-Pixels
An x-ray exposure above the highest level of the exposure latitude may result in an
image error called: - ANSWER-Saturation artifact
Which of the following radiograhic matrices would produces the greatesr spatial
frequency? - ANSWER-2048 x 2048
Which of the following will produce the highest spatial resolution? - ANSWER-Large
matrix and low pitch
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