RT131: Rad-Physics/Fluoro Exam 2 Study Guide (RTBC
QUESTIONS) With Complete Solutions
Which of the following minimizes fluoroscopic image blooming
with image intensifiers?
More precise positioning of the patient anatomy
Which image intensifier error is potentially caused by external
magnetic fields, and will result in parts of the image appearing
curved or bent in a "S" shaped pattern?
S-shaped distortion
Fluoroscopic image noise is directly related to the:
During a fluoroscopy procedure in an R/F room, the operator
notices a decrease in image clarity due to the presence of noise.
What adjustment should be made to reduce the image noise in
the following image?
Decrease source-to-image distance (SID)
Which two of the following would impact a provider's ability to
make an accurate diagnosis or to perform a procedure accurately
when using image intensifiers? (Select two)
Distortion within the image
Artifacts present within the image
When using an image intensifier, the operator notices a loss of
brightness at the periphery of the image, as seen in the following
image. Which of the following quality issues has occurred?
,Vignetting
Which two of the following fluoroscopic quality issues are not
caused by the design of the image intensifier? (Select two)
Lag
Noise
The use of frame averaging would correct which of the
following fluoroscopic image quality issues?
Lag
When x-ray, light, and electron energies scatter within the image
intensifier and result in a contrast-reducing haze, which quality
issue will occur?
Veiling glare
Which three of the following are accurate regarding current
fluoroscopy monitors? (Select three)
Fluoroscopic viewing monitors display images in black and
white
Fluoroscopic viewing monitors can be suspended from the
ceiling
Fluoroscopic viewing monitors can be found on wheeled carts or
attached to a c-arm
It is important to record fluoroscopic images because of the need
to: (Select three)
Review and analyze fluoroscopic images
Communicate findings in the fluoroscopic images
, Legally document fluoroscopic images that are taken during
procedures
In fluoroscopy, what is the primary difference between the
image recording process of an image intensifier and the
recording process of a flat panel detector?
Flat panel detectors use a thin-film transistor (TFT)
Where are viewing monitors typically located in stationary and
mobile fluoroscopy?
Suspended from the ceiling in stationary fluoroscopy, and on a
roller cart for mobile fluoroscopy
How does image quality differ between image intensifiers that
use charge-coupled devices (CCDs) and image intensifiers that
use vidicons?
CCD results in higher spatial resolution and less image
blooming or lag
After the electrical signal has been created in a fluoroscopic
system, it is:
Sent to an analog-to-digital converter (ADC), then sent to a
monitor for viewing
What component of the fluoroscopic system is responsible for
converting the electrical signal into a digital signal?
Analog-to-digital converter (ADC)
In modern fluoroscopic systems with an image intensifier, how
is the charge-coupled device (CCD) connected to the output
phosphor?
QUESTIONS) With Complete Solutions
Which of the following minimizes fluoroscopic image blooming
with image intensifiers?
More precise positioning of the patient anatomy
Which image intensifier error is potentially caused by external
magnetic fields, and will result in parts of the image appearing
curved or bent in a "S" shaped pattern?
S-shaped distortion
Fluoroscopic image noise is directly related to the:
During a fluoroscopy procedure in an R/F room, the operator
notices a decrease in image clarity due to the presence of noise.
What adjustment should be made to reduce the image noise in
the following image?
Decrease source-to-image distance (SID)
Which two of the following would impact a provider's ability to
make an accurate diagnosis or to perform a procedure accurately
when using image intensifiers? (Select two)
Distortion within the image
Artifacts present within the image
When using an image intensifier, the operator notices a loss of
brightness at the periphery of the image, as seen in the following
image. Which of the following quality issues has occurred?
,Vignetting
Which two of the following fluoroscopic quality issues are not
caused by the design of the image intensifier? (Select two)
Lag
Noise
The use of frame averaging would correct which of the
following fluoroscopic image quality issues?
Lag
When x-ray, light, and electron energies scatter within the image
intensifier and result in a contrast-reducing haze, which quality
issue will occur?
Veiling glare
Which three of the following are accurate regarding current
fluoroscopy monitors? (Select three)
Fluoroscopic viewing monitors display images in black and
white
Fluoroscopic viewing monitors can be suspended from the
ceiling
Fluoroscopic viewing monitors can be found on wheeled carts or
attached to a c-arm
It is important to record fluoroscopic images because of the need
to: (Select three)
Review and analyze fluoroscopic images
Communicate findings in the fluoroscopic images
, Legally document fluoroscopic images that are taken during
procedures
In fluoroscopy, what is the primary difference between the
image recording process of an image intensifier and the
recording process of a flat panel detector?
Flat panel detectors use a thin-film transistor (TFT)
Where are viewing monitors typically located in stationary and
mobile fluoroscopy?
Suspended from the ceiling in stationary fluoroscopy, and on a
roller cart for mobile fluoroscopy
How does image quality differ between image intensifiers that
use charge-coupled devices (CCDs) and image intensifiers that
use vidicons?
CCD results in higher spatial resolution and less image
blooming or lag
After the electrical signal has been created in a fluoroscopic
system, it is:
Sent to an analog-to-digital converter (ADC), then sent to a
monitor for viewing
What component of the fluoroscopic system is responsible for
converting the electrical signal into a digital signal?
Analog-to-digital converter (ADC)
In modern fluoroscopic systems with an image intensifier, how
is the charge-coupled device (CCD) connected to the output
phosphor?
