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Ultrasound Physics and Instrumentation > Module 6: Doppler Ultrasound & Doppler Artefacts > Flashcards

Module 6: Doppler Ultrasound & Doppler Artefacts Flashcards

(58 cards)

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1
Q

Viscosity

A

measure of a fluid’s resistance to flow

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2
Q

Pulsed wave Doppler

A

measures flow at a specific point using a sample volume box

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3
Q

Static filling pressure

A

Left ventricular filling pressure - the pressure that fills the ventricle in diastole and determines stroke volume

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4
Q

Poiseuille’s equation

A

For laminar flow in a tube

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5
Q

Cardiac output

A

How many liters of blood the heart pumps in 1 minute

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6
Q

Blunt (or plug) flow

A
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7
Q

Obstruction

A

the limitation of blood flow out of the left ventricle

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8
Q

Continous wave doppler

A

measures all blood flow velocities along the cursor line

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9
Q

Complex doppler signal

A
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10
Q

Spectural broadening

A
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11
Q

Baseline

A
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12
Q

Power Doppler

A
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13
Q

Ensemble length

A
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14
Q

Echo wavetrain

A
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15
Q

Fixed echo cancellation

A
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16
Q

Directional power doppler

A
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17
Q

End diastolic velcoity

A
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18
Q

Triphasic waveform

A
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19
Q

Venous incompetence

A
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20
Q

Deep vein thrombosis

A
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21
Q

Beat frequency

A
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22
Q

Velocity profile

A
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23
Q

Aliasing

A
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24
Q

Bernoulli’s principle

25
Duplex Doppler
26
Eddy flow
27
Doppler shift
28
Plused wave doppler
29
Fast fourier transform (FFT)
30
Spectural 'window'
31
Spectural inversion
32
Autocorrection
33
Colour resolution box
34
Colour aliasing
35
Mean frequency estimation
36
Volume flow rate
37
High velocity jet
38
Biphasic waveform
39
Monophasic waveform
40
Laminar Flow
41
Nyquist limit
42
Hydrostatic pressure
43
Reynold's number
44
Compliance
45
Turbulence
46
Doppler effect
47
Stenosis
48
Power specturm
49
Wall filter
50
Velocity range
51
Dwell time
52
Mean doppler shift
53
Pulsatility index
54
Resistive index
55
Peak systolic velocity
56
Slow flow stenosis
57
Augmentation
58
Turbulence

Ultrasound Physics and Instrumentation (8 decks)

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