SPI Mock Registry Exam A20 Questions And
Answers
reflected signals must undergo compression b/c the _______ of
reflected signals __________ the ability of the system to
process/display that many signals, & it is important to maintain gray
scale w/in range of _______ ___________. -
correct answer ✅range; exceeds; human vision
the amount of compensation necessary for different echoes varies
w/: -
correct answer ✅reflector depth
when evaluating a suspected arterial stenosis, a Doppler angle of
_____ degrees will produce the MOST accurate flow velocity. -
correct answer ✅0
term defined as specific area/location where Doppler shift info is
being obtained -
correct answer ✅sample volume
this reduces the beam width to the most narrow beam at all
possible depths by controlling the # of elements that are listening
for reflections at 1 time. what kind of resolution does this optimize?
-
correct answer ✅dynamic receive focusing; lateral resolution
,SPI Mock Registry Exam A20 Questions And
Answers
if an ellipse is used to document the area of a structure, what unit
will be used to report the measurement? (cm) -
correct answer ✅cm^2
which of these pts would need a guardian to sign an informed
consent form for a pericardiocentesis?
a) pt w/ Parkinson's disease
b) pt w/ Alzheimer's disease
c) pt that is accompanied by a translator
d) blind pt -
correct answer ✅b) pt w/ Alzheimer's disease
it BP increases w/ constant resistance, the rate of blood flow will
_________. If BP increases w/ an equal increase in resistance, the
rate of blood flow remains ________. -
correct answer ✅increase; unchanged
this is the perceived color used to demonstrate direction, reds &
blues; determined by direction (positive/negative) of the shift -
correct answer ✅color hue
,SPI Mock Registry Exam A20 Questions And
Answers
this is the brightness of a color that is displayed; determined by the
amplitude of the reflection -
correct answer ✅luminance
the direction of the Doppler shift determines:
a) peak velocity of flow
b) color Doppler luminance
c) avg velocity of flow
d) color Doppler hue -
correct answer ✅d) color Doppler hue
temporal resolution will improve w/ ________ # of focal zones,
_______ FOV, & _________ image depth & line density -
correct answer ✅decreased; smaller; decreased
which of these console adjustments will improve temporal
resolution on an image?
a) turning on harmonic imaging
b) decreasing imaging depth
c) adding another focal zone
, SPI Mock Registry Exam A20 Questions And
Answers
d) turning off the zoom function -
correct answer ✅b) decreasing imaging depth
this is the primary factor that determines the resistance
characteristics of an arterial signal displayed by PW Doppler:
a) origin of blood
b) branch #
c) vessel course & location
d) part it is supplying -
correct answer ✅d) part it is supplying
to increase the amplitude of an u/s pulse produced by a transducer,
the:
a) voltage amplitude from the pulser must increase
b) # of PZT elements must increase
c) size of PZT elements must increase
d) voltage amplitude from the pulser must decrease -
correct answer ✅a) voltage amplitude from the pulse must
increase
Answers
reflected signals must undergo compression b/c the _______ of
reflected signals __________ the ability of the system to
process/display that many signals, & it is important to maintain gray
scale w/in range of _______ ___________. -
correct answer ✅range; exceeds; human vision
the amount of compensation necessary for different echoes varies
w/: -
correct answer ✅reflector depth
when evaluating a suspected arterial stenosis, a Doppler angle of
_____ degrees will produce the MOST accurate flow velocity. -
correct answer ✅0
term defined as specific area/location where Doppler shift info is
being obtained -
correct answer ✅sample volume
this reduces the beam width to the most narrow beam at all
possible depths by controlling the # of elements that are listening
for reflections at 1 time. what kind of resolution does this optimize?
-
correct answer ✅dynamic receive focusing; lateral resolution
,SPI Mock Registry Exam A20 Questions And
Answers
if an ellipse is used to document the area of a structure, what unit
will be used to report the measurement? (cm) -
correct answer ✅cm^2
which of these pts would need a guardian to sign an informed
consent form for a pericardiocentesis?
a) pt w/ Parkinson's disease
b) pt w/ Alzheimer's disease
c) pt that is accompanied by a translator
d) blind pt -
correct answer ✅b) pt w/ Alzheimer's disease
it BP increases w/ constant resistance, the rate of blood flow will
_________. If BP increases w/ an equal increase in resistance, the
rate of blood flow remains ________. -
correct answer ✅increase; unchanged
this is the perceived color used to demonstrate direction, reds &
blues; determined by direction (positive/negative) of the shift -
correct answer ✅color hue
,SPI Mock Registry Exam A20 Questions And
Answers
this is the brightness of a color that is displayed; determined by the
amplitude of the reflection -
correct answer ✅luminance
the direction of the Doppler shift determines:
a) peak velocity of flow
b) color Doppler luminance
c) avg velocity of flow
d) color Doppler hue -
correct answer ✅d) color Doppler hue
temporal resolution will improve w/ ________ # of focal zones,
_______ FOV, & _________ image depth & line density -
correct answer ✅decreased; smaller; decreased
which of these console adjustments will improve temporal
resolution on an image?
a) turning on harmonic imaging
b) decreasing imaging depth
c) adding another focal zone
, SPI Mock Registry Exam A20 Questions And
Answers
d) turning off the zoom function -
correct answer ✅b) decreasing imaging depth
this is the primary factor that determines the resistance
characteristics of an arterial signal displayed by PW Doppler:
a) origin of blood
b) branch #
c) vessel course & location
d) part it is supplying -
correct answer ✅d) part it is supplying
to increase the amplitude of an u/s pulse produced by a transducer,
the:
a) voltage amplitude from the pulser must increase
b) # of PZT elements must increase
c) size of PZT elements must increase
d) voltage amplitude from the pulser must decrease -
correct answer ✅a) voltage amplitude from the pulse must
increase
