Review Flashcards
What is
required for
fluid to flow?
Pressure
What is “dyne”
a unit of?
Force
What rule does
the following
statement
describe? “As the diameter of the
stenosis increases, flow
speed increases to
maintain flow”
Continuity Rule
In harmonic
imaging, which
harmonic
frequency is
accepted?
Second
Harmonic
What is another
term for spatial
compounding?
Crossbeam/SRI
What does this
formula
calculate?
DS = Fr-FT
Doppler Shift
Frequency Change (DS) = (Fr) Received Frequency –
(Ft)Transmitted Frequency
What does “Fo”
represent in
this equation?
F(DS) = (2 Fo V)/c
Fo = Operating
Frequency
When Doppler angle
increases, Doppler
shift frequency
_____?
Decreases
What is the
recommended PRF for
a Cardiac Exam?
60 - 80 cm/s
This “limit” refers to
the highest
detectable Doppler
frequency shift
without aliasing.
The Nyquist Limit
What has to be
completed before
quality control can
occur?
Quality Assurance
Who is responsible for
daily quality control in
an US department?
Technologists
STIC is short for?
Spatio-temporal
image correlation
Sensitivity is also
called:
The true positive rate
Specificity is the
proportion of people
without the disease
who will have a ____
result.
Negative Result
This is the downside
of having a highly
sensitive test.
High false positive
rate
These three factors
take up microbubbles
in US contrast.
Immune system, liver,
spleen
This common contrast
agent brand is used
by Island Health.
Definity
Ultrasound contrast
microbubbles consist
of these two primary
components.
PEG shell, gas core
ABUS is short for?
Automated Breast
Ultrasound
Automated Breast
Ultrasound is used for
this purpose.
Screening dense
breasts
POCUS is short for?
Point of care
ultrasound
SonoCNS is a type of
this technology?
Artificial Intelligence
B Flow Imaging can be
used to best depict
this type of flow?
Trickle Flow
Which materials have
a larger strain?
Soft Materials
This formula is used to
measure the stiffness
of a material.
Young’s Modulus
This method of
elastography only
generates qualitative
information.
Static elastography
A shear wave is also
known as this type of
wave.
Transverse Wave
How far below the
liver capsule should
the Shear Wave box
be placed?
1-2 cm
IQR is short for?
Inter Quartile Range
What units are Shear
Wave results reported
in?
kPa
What kPa is the cut-
off for Cirrhosis?
> 11.9 kPa
