California Fluoroscopy Test Questions With Complete
Solutions
___________reduces noise present in image by continuosly
displaing an image that is created by averaging current frame
with one or more previous frames of DF data Correct Answers
Temporal Frame averaging
__________use continous x-ray output with an analog video
camera as the receptor of the virtual Image Correct Answers
Conventional Fluoroscopy
"radiation area" is an area in which there exists radiation levels
that could result in an individual receiving a dose equivalent in
excess of ___ in one hours at 30 cm form the radiation source.
a. 0.1 rem (1 mSv)
b. 1.0 rem (10 mSv)
c. 5 rems (50 mSv)
d. 0.005 rem (0.05 mSv Correct Answers 0.005 rem (0.05 mSv
5 Millirads/HR Correct Answers You must wear a protective
apron
8 bit depth pixels are capable of displaying a range Correct
Answers 256 shades of gray 0-256
A "high radiation area" is an area in which there exists radiation
levels that could result in an individual receiving a dose
equivalent in excess of ___ in one hour at 30cm from the
radiation source. Correct Answers 0.1 rem (1 mSv)
,A "high radiation area" is an area in which there exists radiation
levels that could result in an individual receiving a dose
equivalent in excess of ___ in one hour at 30cm from the
radiation source. Correct Answers 0.1 rem (1 mSv)
A "radiation area" is an area in which there exists radiation
levels that could result in an individual receiving a dose
equivalent in excess of ___ in one hours at 30 cm form the
radiation source. Correct Answers 0.005 rem (0.05 mSv)
A cell's operational "programing" is stored in what part of the
cell? Correct Answers DNA
A Cesium Iodide / amorphous Silicon) flat panel detector used
for digital fluoroscopy is considered to be a:
1. indirect digital detector
2. direct digital detector
3. scintillator detector
4. non-scintillator detector Correct Answers 1 and 3
A Cesium Iodide / amorphous Silicon) flat panel detector used
for digital fluoroscopy is considered to be a: Correct Answers 1.
indirect digital detector
2. scintillator detector
A charged coupled device (CCD) has a ___ sensitivity to light
and a ___ level of signal-to-noise ratio than an analog pick-up
tube Correct Answers higher, higher
,A charged coupled device (CCD) has a ___ sensitivity to light
and a ___ level of signal-to-noise ratio than an analog pick-up
tube.
a. higher, lower
b. lower, lower
c. lower, higher
d. higher, higher Correct Answers higher, higher
A digital camera uses a ___ to capture light from the output
phosphor on an image intensifier Correct Answers Charge
Coupled Device
A digital fluoroscopy system with a dynamic bit depth range of
2 to the 10th will be able to produce an image demonstrating
how many shades of gray? Correct Answers 1024
A digital fluoroscopy with a charge coupled device has lower
____ and higher ____ than conventional fluoroscopy Correct
Answers Patient dose, light sensitivity
A digital fluoroscopy with a charge coupled device has lower
____ and higher ____ than conventional fluoroscopy.
a. light sensitivity, patient dose
b. patient dose, light sensitivity
c. signal-to-noise ratio, patient dose
d. detective quantum efficiency, maintenance Correct Answers
patient dose, light sensitivity
A dose to the skin is most likely a good indicator of the:
a. Dose to the underlying bone marrow
b. Dose to the lens of the eyes
, c. Dose to the underlying gonads
d. Level of dose received by organs near the point of interest
Correct Answers Level of dose received by organs near the
point of interest
A dose to the skin is most likely a good indicator of the: Correct
Answers Level of dose received by organs near the point of
interest
A dose to the skin is most likely a good indicator of the: Correct
Answers Level of dose received by organs near the point of
interest
A fluoroscopic system utilizing an indirect flat panel detector,
the ___ converts light into an electric signal.
a. Scintillator
b. Photodetector
c. Input phosphor
d. Output phosphor Correct Answers Photodetector
A fluoroscopic system utilizing an indirect flat panel detector,
the ___ converts light into an electric signal. Correct Answers
Photodetector
A generator operating in the "pulse-progressive fluoroscopy'
mode will produce usable x-ray photons during which period of
time?
a. duty cycle
b. extinction phase
c. interrogation phase Correct Answers duty cycle
Solutions
___________reduces noise present in image by continuosly
displaing an image that is created by averaging current frame
with one or more previous frames of DF data Correct Answers
Temporal Frame averaging
__________use continous x-ray output with an analog video
camera as the receptor of the virtual Image Correct Answers
Conventional Fluoroscopy
"radiation area" is an area in which there exists radiation levels
that could result in an individual receiving a dose equivalent in
excess of ___ in one hours at 30 cm form the radiation source.
a. 0.1 rem (1 mSv)
b. 1.0 rem (10 mSv)
c. 5 rems (50 mSv)
d. 0.005 rem (0.05 mSv Correct Answers 0.005 rem (0.05 mSv
5 Millirads/HR Correct Answers You must wear a protective
apron
8 bit depth pixels are capable of displaying a range Correct
Answers 256 shades of gray 0-256
A "high radiation area" is an area in which there exists radiation
levels that could result in an individual receiving a dose
equivalent in excess of ___ in one hour at 30cm from the
radiation source. Correct Answers 0.1 rem (1 mSv)
,A "high radiation area" is an area in which there exists radiation
levels that could result in an individual receiving a dose
equivalent in excess of ___ in one hour at 30cm from the
radiation source. Correct Answers 0.1 rem (1 mSv)
A "radiation area" is an area in which there exists radiation
levels that could result in an individual receiving a dose
equivalent in excess of ___ in one hours at 30 cm form the
radiation source. Correct Answers 0.005 rem (0.05 mSv)
A cell's operational "programing" is stored in what part of the
cell? Correct Answers DNA
A Cesium Iodide / amorphous Silicon) flat panel detector used
for digital fluoroscopy is considered to be a:
1. indirect digital detector
2. direct digital detector
3. scintillator detector
4. non-scintillator detector Correct Answers 1 and 3
A Cesium Iodide / amorphous Silicon) flat panel detector used
for digital fluoroscopy is considered to be a: Correct Answers 1.
indirect digital detector
2. scintillator detector
A charged coupled device (CCD) has a ___ sensitivity to light
and a ___ level of signal-to-noise ratio than an analog pick-up
tube Correct Answers higher, higher
,A charged coupled device (CCD) has a ___ sensitivity to light
and a ___ level of signal-to-noise ratio than an analog pick-up
tube.
a. higher, lower
b. lower, lower
c. lower, higher
d. higher, higher Correct Answers higher, higher
A digital camera uses a ___ to capture light from the output
phosphor on an image intensifier Correct Answers Charge
Coupled Device
A digital fluoroscopy system with a dynamic bit depth range of
2 to the 10th will be able to produce an image demonstrating
how many shades of gray? Correct Answers 1024
A digital fluoroscopy with a charge coupled device has lower
____ and higher ____ than conventional fluoroscopy Correct
Answers Patient dose, light sensitivity
A digital fluoroscopy with a charge coupled device has lower
____ and higher ____ than conventional fluoroscopy.
a. light sensitivity, patient dose
b. patient dose, light sensitivity
c. signal-to-noise ratio, patient dose
d. detective quantum efficiency, maintenance Correct Answers
patient dose, light sensitivity
A dose to the skin is most likely a good indicator of the:
a. Dose to the underlying bone marrow
b. Dose to the lens of the eyes
, c. Dose to the underlying gonads
d. Level of dose received by organs near the point of interest
Correct Answers Level of dose received by organs near the
point of interest
A dose to the skin is most likely a good indicator of the: Correct
Answers Level of dose received by organs near the point of
interest
A dose to the skin is most likely a good indicator of the: Correct
Answers Level of dose received by organs near the point of
interest
A fluoroscopic system utilizing an indirect flat panel detector,
the ___ converts light into an electric signal.
a. Scintillator
b. Photodetector
c. Input phosphor
d. Output phosphor Correct Answers Photodetector
A fluoroscopic system utilizing an indirect flat panel detector,
the ___ converts light into an electric signal. Correct Answers
Photodetector
A generator operating in the "pulse-progressive fluoroscopy'
mode will produce usable x-ray photons during which period of
time?
a. duty cycle
b. extinction phase
c. interrogation phase Correct Answers duty cycle
