RTBC Comprehensive Study Guide+Exam
Questions with Complete Answers
is demonstrated in the following illustration?
Compton scattering
Image contrast is defined as the visible difference in:
Brightness between two areas in an image
High contrast is defined by:
Short grayscale and a few shades of gray
Gray-scale is defined as:
The total brightness levels that are visible in an image
Low contrast is defined by:
Long gray scale and many shades of gray
Which of the following might make it difficult to visualize the anatomy and pathology
of the abdomen
Long gray-scale and many shades of gray
Long gray-scale is synonynous with:
low contrast and many shades of gray
Large visible differences in brightness are defined as:
Short gray-scale, high contrast, and a few shades of gray
Which of the following is the most important factor influencing the contrast of the
radiographic image?
,Computer processing
Which of the following terms describes a computer processing feature that influences
radiographic image contrast? (Select two)
-histogram analysis
-Lookup table (LUT)
Which of the following images demonstrates the highest contrast?
Image B
Which of the following factors has the greatest influence on radiographic image
contracts?
Computer processing
What term describes the signal difference in the remnant beam?
Differential attenuation
Which of the following tissues and materials corresponds to the highest signal
intensity at the image receptor?
Bowel gas
Large signal differences in the remnant beam will produce a radiographic image
demonstrating:
High image contrast
How does increased kilovoltage peak (kVp) affect inferential attenuation of the x-ray
beam?
Decrease differential attenuation
,Assuming that no other exposure, variables change, how does an increase kill voltage
peak (kVp) affect the proportion of scatter radiation, striking the image receptor?
Increased scatter
In what way does decrees kilovoltage peak (kVp) affect differences in signal intensity
in the remnant beam?
Increased differences in signal intensity
How does an increased ratio affect radiographic image contrast?
Increased contrast
Assuming that all other procedure factors remain the same, which of the following
grid ratios will be associated with the highest image contrast?
12:1 grid ratio
What is the primary disadvantage of using a high-ratio grade?
Patient dose must be increased
Subject contrast in radiography refers to the:
Magnitude of signal difference in the remnant beam
What is the primary factor controlling subject contrast?
The absorption characteristics of the tissues and structures being expose
What term describes a body section which creates a remnant been having widely
varying signal intensity?
High subject contrast
The large difference in signal intensities within the remnant beam of a chest exposure
is described as:
, High subject contrast
Increasing subject contrast increases the visibility of Anatomy and pathology due to:
Increase brightness differences between adjacent structures
How does an air-filled bowel obstruction affect the subject contrast of the abdomen?
Increased subject contrast
How do ascites affect the subject contrast of the abdomen?
Decreased subject contrast
During radiographic imaging of the chest, subject contrast is most likely to be increase
with which of these pathological Conditions?
Pneumothorax
In the following image, what pathology is indicated by distended loops of air-filled
bowel and increased subject contrast throughout the abdomen?
Bowel obstruction
In the following image, what pathology is indicated by increase opacity in the right
lower lobe and loss of subject Contrast?
Pneumonia
Which of the following is an image processing factor that influences radiographic
image contrast?
Histogram analysis
Which of the following is a post-processing factor that affects the displayed image
contrast?
Window width (WW)
Questions with Complete Answers
is demonstrated in the following illustration?
Compton scattering
Image contrast is defined as the visible difference in:
Brightness between two areas in an image
High contrast is defined by:
Short grayscale and a few shades of gray
Gray-scale is defined as:
The total brightness levels that are visible in an image
Low contrast is defined by:
Long gray scale and many shades of gray
Which of the following might make it difficult to visualize the anatomy and pathology
of the abdomen
Long gray-scale and many shades of gray
Long gray-scale is synonynous with:
low contrast and many shades of gray
Large visible differences in brightness are defined as:
Short gray-scale, high contrast, and a few shades of gray
Which of the following is the most important factor influencing the contrast of the
radiographic image?
,Computer processing
Which of the following terms describes a computer processing feature that influences
radiographic image contrast? (Select two)
-histogram analysis
-Lookup table (LUT)
Which of the following images demonstrates the highest contrast?
Image B
Which of the following factors has the greatest influence on radiographic image
contracts?
Computer processing
What term describes the signal difference in the remnant beam?
Differential attenuation
Which of the following tissues and materials corresponds to the highest signal
intensity at the image receptor?
Bowel gas
Large signal differences in the remnant beam will produce a radiographic image
demonstrating:
High image contrast
How does increased kilovoltage peak (kVp) affect inferential attenuation of the x-ray
beam?
Decrease differential attenuation
,Assuming that no other exposure, variables change, how does an increase kill voltage
peak (kVp) affect the proportion of scatter radiation, striking the image receptor?
Increased scatter
In what way does decrees kilovoltage peak (kVp) affect differences in signal intensity
in the remnant beam?
Increased differences in signal intensity
How does an increased ratio affect radiographic image contrast?
Increased contrast
Assuming that all other procedure factors remain the same, which of the following
grid ratios will be associated with the highest image contrast?
12:1 grid ratio
What is the primary disadvantage of using a high-ratio grade?
Patient dose must be increased
Subject contrast in radiography refers to the:
Magnitude of signal difference in the remnant beam
What is the primary factor controlling subject contrast?
The absorption characteristics of the tissues and structures being expose
What term describes a body section which creates a remnant been having widely
varying signal intensity?
High subject contrast
The large difference in signal intensities within the remnant beam of a chest exposure
is described as:
, High subject contrast
Increasing subject contrast increases the visibility of Anatomy and pathology due to:
Increase brightness differences between adjacent structures
How does an air-filled bowel obstruction affect the subject contrast of the abdomen?
Increased subject contrast
How do ascites affect the subject contrast of the abdomen?
Decreased subject contrast
During radiographic imaging of the chest, subject contrast is most likely to be increase
with which of these pathological Conditions?
Pneumothorax
In the following image, what pathology is indicated by distended loops of air-filled
bowel and increased subject contrast throughout the abdomen?
Bowel obstruction
In the following image, what pathology is indicated by increase opacity in the right
lower lobe and loss of subject Contrast?
Pneumonia
Which of the following is an image processing factor that influences radiographic
image contrast?
Histogram analysis
Which of the following is a post-processing factor that affects the displayed image
contrast?
Window width (WW)
