RTBC Digital Radiography Assessment
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Which of the following factors would produce a radiographic image with the highest spatial
resolution - CORRECT 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: - CORRECT
ANSWER - Dynamic range
Which component of an indirect capture flat-panel detector converts incident x-ray photons into
visible light photons? - CORRECT ANSWER - Scintillation Layer
Modulation Transfer Function(MFT) is also referred to as which of the following? - CORRECT
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? - CORRECT ANSWER - Quantum
mottle
Which of the listed radiopgraphic matrices will create an image with the smallest pixels? -
CORRECT ANSWER - 2048 x 2048
Which of the following represents the highest Modulation Transfer Function (MTF) score? -
CORRECT ANSWER - MTF of 1.0
The phosphor layer of the computed radiography (CR) imaging plate is composed of: -
CORRECT ANSWER - Barium Fluorohalides and Europlium Activators
, When should a computed radiography (CR) imaging plate be processed to prevent loss of the
latent image? - CORRECT ANSWER - As soon after exposure possible
Blotchy appearance caused by an insufficient number of photons reaching the image receptor is
known as: (select three) - CORRECT ANSWER - Quantum noise
Quantum mottle
Photon starvation
Exposure latitude is define as the: - CORRECT 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? - CORRECT ANSWER -1
lp/mm
Which two of the following flat-panel detector components can collect and convert light into an
electrical signal? (select two) - CORRECT 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? - CORRECT ANSWER - Charge-
coupled device (CCD)
Which of the following materials is responsible for storing the latent image within the computed
radiography (CR) imaging plate? - CORRECT 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) - CORRECT ANSWER -
Carbon filter
Plastic
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Which of the following factors would produce a radiographic image with the highest spatial
resolution - CORRECT 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: - CORRECT
ANSWER - Dynamic range
Which component of an indirect capture flat-panel detector converts incident x-ray photons into
visible light photons? - CORRECT ANSWER - Scintillation Layer
Modulation Transfer Function(MFT) is also referred to as which of the following? - CORRECT
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? - CORRECT ANSWER - Quantum
mottle
Which of the listed radiopgraphic matrices will create an image with the smallest pixels? -
CORRECT ANSWER - 2048 x 2048
Which of the following represents the highest Modulation Transfer Function (MTF) score? -
CORRECT ANSWER - MTF of 1.0
The phosphor layer of the computed radiography (CR) imaging plate is composed of: -
CORRECT ANSWER - Barium Fluorohalides and Europlium Activators
, When should a computed radiography (CR) imaging plate be processed to prevent loss of the
latent image? - CORRECT ANSWER - As soon after exposure possible
Blotchy appearance caused by an insufficient number of photons reaching the image receptor is
known as: (select three) - CORRECT ANSWER - Quantum noise
Quantum mottle
Photon starvation
Exposure latitude is define as the: - CORRECT 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? - CORRECT ANSWER -1
lp/mm
Which two of the following flat-panel detector components can collect and convert light into an
electrical signal? (select two) - CORRECT 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? - CORRECT ANSWER - Charge-
coupled device (CCD)
Which of the following materials is responsible for storing the latent image within the computed
radiography (CR) imaging plate? - CORRECT 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) - CORRECT ANSWER -
Carbon filter
Plastic
