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

Module 6: Doppler Ultrasound & Doppler Artefacts Flashcards

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
Q

Duplex Doppler

26
Q

Eddy flow

27
Q

Doppler shift

28
Q

Plused wave doppler

29
Q

Fast fourier transform (FFT)

30
Q

Spectural ‘window’

31
Q

Spectural inversion

32
Q

Autocorrection

33
Q

Colour resolution box

34
Q

Colour aliasing

35
Q

Mean frequency estimation

36
Q

Volume flow rate

37
Q

High velocity jet

38
Q

Biphasic waveform

39
Q

Monophasic waveform

40
Q

Laminar Flow

41
Q

Nyquist limit

42
Q

Hydrostatic pressure

43
Q

Reynold’s number

44
Q

Compliance

45
Q

Turbulence

46
Q

Doppler effect

47
Q

Stenosis

48
Q

Power specturm

49
Q

Wall filter

50
Q

Velocity range

51
Q

Dwell time

52
Q

Mean doppler shift

53
Q

Pulsatility index

54
Q

Resistive index

55
Q

Peak systolic velocity

56
Q

Slow flow stenosis

57
Q

Augmentation

58
Q

Turbulence

Ultrasound Physics and Instrumentation (8 decks)

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