Ultrasound Physics

Question

What is the term for an area of the image where there is no returning echoes (black)

Answer 1

hypoechoic

Answer 2

Good soft tissue information, real time, no ionising radiation and accurate measure of structures

Answer 3

Can carry out blood studies, relatively quick and cost effective, highly operator dependant, image interpretation

Answer 4

Can carry out blood studies, ionising radiation, real time and accurate measure of structures

Answer 5

Highly operator dependant, accurate measure of structures, image interpretation, highly operator dependant

Answer 6

20-20,000Hz

Answer 7

Transducer, monitor for display, housing with electronics and controls, coupling gel

Answer 8

Transducer, timing device, housing with electronics and controls, recording device

Answer 9

Transducer, monitor for display, housing with electronics and controls, recording device

Answer 10

Transducer, timing device, housing with electronics and controls, coupling gel

Answer 11

electromagnetic and mechanical waves

Answer 12

sound and mechanical waves

Answer 13

propagation of energy through a medium by cyclic pressure variations

Answer 14

distinguished by energy, frequency and wavelength

Answer 15

Man-made forces changing the frequency of the wave

Answer 16

similar to ocean waves

Answer 17

Soft tissue

Answer 18

All of the above

Answer 19

The difference between maximum value and equilibrium value

Answer 20

Length of one cycle

Answer 21

The number of cycles that occur per second

Answer 22

The speed of the soundwave as it passes through the tissue

Answer 23

transducer

Answer 24

Rarefraction

Answer 25

Attenuation

Answer 26

Beam angling

Answer 27

absorption

Answer 28

Divergence

Answer 29

Scattering

Answer 30

Reflection

Answer 31

Soft Tissue

Answer 32

Is a result of internal friction forces

Answer 33

Is when ultrasound energy is converted into heat

Answer 34

Is the change of direction the beam takes when passing through different structures

Answer 35

Directly removes energy from the beam

Answer 36

When the interface the beam hits is

Answer 37

When the interface the beam hits is >1 wavelength, scattering occurs equally in two directions

Answer 38

When the interface the beam hits is >1 wavelength, scattering occurs equally in all directions

Answer 39

only a small portion of the beam returns to the transducer

Answer 40

It creates radiation dose to the patient

Answer 41

scattered waves interact with each other to form back scatter patterns

Answer 42

Mentally affects the operator

Answer 43

non-specular

Answer 44

the material's density and velocity of ultrasound in the material

Answer 45

the ultrasound's density and the velocity of the material

Answer 46

the weight of the transducer and the velocity of ultrasound in the material

Answer 47

the interface beam angle and the material density

Siguiente

Ultrasound Physics

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	Creado por genevieve_f94 hace casi 11 años