PRINCIPLES OF RADIOGRAPHIC
IMAGING FINAL EXAQM REVIEW-
GRADED A
Photoelectric interaction - ANSWER-Complete absorption of the diagnostic range x-ray
photon is the interaction known as:
An inner-shell electron - ANSWER-The photoelectric interaction involves removal of
has lead strips that travel in one direction & is the most common type of radiographic
grid - ANSWER-A linear grid
parallel & nonfojcused grid - ANSWER-A grid with lead strips that run parallel to each
other is a
focal distance - ANSWER-The distance between the grid and the convergent line is the
focal range - ANSWER-The recommended SIDs that can be used with a focused grid is
the
Grid cassette - ANSWER-An IR that has a grid permanently attached to its front surface
is a
grid cap - ANSWER-The type of grid that is permanently mounted but includes a
channel for the IR to slide into is the
bucky - ANSWER-The grid is part of a device located just below the tabletop that also
includes a tray to hold the IR. This device is the
blur out the grid lines - ANSWER-The reason the grid in the bucky reciprocates is to
55 mAs - ANSWER-If 22 mAs and a 5:1 grid results in an excellent radiograph, how
much mAs is needed with a 12:1 grid?
Off-level - ANSWER-When the x-ray beam is angled across the lead strips you have
_________ cutoff.
zebra - ANSWER-The Moire effect is also known as the _________ pattern.
, patient - ANSWER-Anyone in the room during an exposure must wear a lead apron to
absorb the scatter radiation produced in the
Scatter radiation - ANSWER-decreases the visibility of anatomic structures
line pairs per millimeter - ANSWER-Resolution is typically measured in
Differences in tissue thickness and density, effective atomic number - ANSWER-Which
of the following contribute to subject contrast?
resolution - ANSWER-The ability to of the imaging system to distinguish between two
structures is
X-ray tube, IR, anatomic part - ANSWER-In order to preserve the true shape of the part
in the image, what three factors should be properly alined?
Decreased OID and increased SID - ANSWER-Which of the following combinations
would result in an image with the least amount of magnification?
Radiographic contrast - ANSWER-Allows visibility of anatomic structures
improved sharpness - ANSWER-An imaging system that can resolve a greater number
of line pairs within 1 mm is said to have ___________.
spatial resolution - ANSWER-The smallest object that can be detected in a digital image
is
only the same shade of gray - ANSWER-If there were no contrast in a radiograph, the
image would include
distortion - ANSWER-The radiographic misrepresentation of either size (magnification)
or the shaper of the anatomic part is called
pixel - ANSWER-The smallest component of the digital image matrix is the
Artifact - ANSWER-unwanted image seen in a radiograph
Quantum noise - ANSWER-brightness or density fluctuation on the image is called
pixel pitch - ANSWER-The distance from the center of one pixel to the center of the one
next to it is
decreasing the window width (narrow WW) - ANSWER-Making the digital image appear
with high contrast, more black and white, is done by
IMAGING FINAL EXAQM REVIEW-
GRADED A
Photoelectric interaction - ANSWER-Complete absorption of the diagnostic range x-ray
photon is the interaction known as:
An inner-shell electron - ANSWER-The photoelectric interaction involves removal of
has lead strips that travel in one direction & is the most common type of radiographic
grid - ANSWER-A linear grid
parallel & nonfojcused grid - ANSWER-A grid with lead strips that run parallel to each
other is a
focal distance - ANSWER-The distance between the grid and the convergent line is the
focal range - ANSWER-The recommended SIDs that can be used with a focused grid is
the
Grid cassette - ANSWER-An IR that has a grid permanently attached to its front surface
is a
grid cap - ANSWER-The type of grid that is permanently mounted but includes a
channel for the IR to slide into is the
bucky - ANSWER-The grid is part of a device located just below the tabletop that also
includes a tray to hold the IR. This device is the
blur out the grid lines - ANSWER-The reason the grid in the bucky reciprocates is to
55 mAs - ANSWER-If 22 mAs and a 5:1 grid results in an excellent radiograph, how
much mAs is needed with a 12:1 grid?
Off-level - ANSWER-When the x-ray beam is angled across the lead strips you have
_________ cutoff.
zebra - ANSWER-The Moire effect is also known as the _________ pattern.
, patient - ANSWER-Anyone in the room during an exposure must wear a lead apron to
absorb the scatter radiation produced in the
Scatter radiation - ANSWER-decreases the visibility of anatomic structures
line pairs per millimeter - ANSWER-Resolution is typically measured in
Differences in tissue thickness and density, effective atomic number - ANSWER-Which
of the following contribute to subject contrast?
resolution - ANSWER-The ability to of the imaging system to distinguish between two
structures is
X-ray tube, IR, anatomic part - ANSWER-In order to preserve the true shape of the part
in the image, what three factors should be properly alined?
Decreased OID and increased SID - ANSWER-Which of the following combinations
would result in an image with the least amount of magnification?
Radiographic contrast - ANSWER-Allows visibility of anatomic structures
improved sharpness - ANSWER-An imaging system that can resolve a greater number
of line pairs within 1 mm is said to have ___________.
spatial resolution - ANSWER-The smallest object that can be detected in a digital image
is
only the same shade of gray - ANSWER-If there were no contrast in a radiograph, the
image would include
distortion - ANSWER-The radiographic misrepresentation of either size (magnification)
or the shaper of the anatomic part is called
pixel - ANSWER-The smallest component of the digital image matrix is the
Artifact - ANSWER-unwanted image seen in a radiograph
Quantum noise - ANSWER-brightness or density fluctuation on the image is called
pixel pitch - ANSWER-The distance from the center of one pixel to the center of the one
next to it is
decreasing the window width (narrow WW) - ANSWER-Making the digital image appear
with high contrast, more black and white, is done by
