PART 1 & 2

Question 1

What is the meaning of the Greek word “graphien”

Answer 1

to write

Question 2

They were the first to describe the

relationship between pitch and frequency

Answer 2

Greeks

Question 3

True or False

Curvilinear uses 7.5 mHz while linear probe uses 3.5 mHz

Answer 3

FALSE
Curvilinear 3.5 mHz
Linear 7.5 mHz

Question 4

What is Sonometer?

Answer 4

Sonometer is an instrument used to study musical sounds

Question 5

What are the other terms of SONOGRAPHY?

Answer 5

Other terms:
Diagnostic Ultrasound
Diagnostic Medical Sonography

Question 6

What is the latin word of sound?

Answer 6

Sonus

Question 7

He forms theory of wave diffraction

Answer 7

Agustin Fresnel (1794)

Question 8

First material to exhibit piezoelectricity

Answer 8

Potassium Sodium Tartrate Tetrahydrate

Question 9

It is the deviation of a wave from

its straight ray propagation

Answer 9

Diffraction

Question 10

Physiologist who researches echolocation in animal bats. According to this theory, bats were listening to something (something a natural human could not hear) Ultrasound physics is founded on this principle.

Answer 10

Lazaro Spallanzani

Question 11

Discovered that sounds travel in waves and
the angle of reflection = to the angle
of incidence

Answer 11

Leonardo da Vinci

Question 12

Physicist, studies sound frequency and
intensity and discovers a wav to use
property of echoing to detect underwater
objects

Answer 12

Paul Langevin

Question 13

They observe phenomenon or piezoelectricity.

Answer 13

Jacques and Pierre Curie

Question 14

Writes his theory of sound, he examined
questions or vibrations and the resonance of
elastic solids and gases.

Answer 14

Lord Rayleigh

Question 15

Greek philosopher who invented the

Sonometer

Answer 15

Pythagoras

Question 16

A name given to high frequency sound

waves.

Answer 16

Ultrasound

Question 17

What is the meaning of SONAR?

Answer 17

SONAR - Sound Navigation and Ranging

Question 18

What is the first transducer?

As per World Congress Ultrasound in Medical Education

Answer 18

Hydrophone

Question 19

Neurologist, who first to use sonography for medical diagnoses.

Answer 19

Dr. Karl Dussik

Question 20

What is the initial Problem of ultrasound in 1950’s?

Answer 20

Air Interference

Question 21

Who developed 3D ultrasound technology and captured three-dimensional images of a fetus?

Answer 21

Kazunori Baba

Question 22

What is the shorthand method of representing very large or very small numbers by alphabetical prefixes?

Answer 22

Metric Notation

Question 23

What us the shorthand method of representing very large or very small numbers by powers of ten?

Answer 23

Scientific Notation

Question 24

Medical imaging that uses non ionizing, high frequency sound waves to generate image of a particular structure.

Answer 24

Sonography

Question 25

Form of energy which causes a mechanical disturbance in the form of mechanical wave that travels in a medium in a LONGITUDINAL WAVE and STRAIGHT LINE FASHION

Answer 25

Sound

Question 26

A classification of sound waves that can travel through a vacuum such as xray.

Answer 26

Electromagnetic waves

Question 27

Type of waves that is perpendicular to the direction of wave.

Answer 27

Transverse wave

Question 28

Refers to the relationship of one wave to another

Answer 28

PHASE

Question 29

Describes the position within a cycle of oscillation and is measured in degrees.

Answer 29

PHASE

Question 30

Ultrasound waves whose wavefronts are out of | position

Answer 30

Out of phase

Question 31

Ultrasound waves whose wavefronts are the same position

Answer 31

In Phase

Question 32

The combination of two waves which are in phase at a specific time and location, with the crest of one wave coinciding with the crest of the other wave, resulting in doubling of the net amplitude (antinodes)

Answer 32

CONSTRUCTIVE INTERFERENCE

Question 33

The combination of two waves which are out of phase at a specific time and location, with the crest of one wave coinciding with the trough of the other wave, resulting in zero net amplitude (node)

Answer 33

DESTRUCTIVE INTERFERENCE

Question 34

Regions of LOW pressure and density

Answer 34

Rarefractions

Question 35

Regions of HIGH pressure and density

Answer 35

Compressions

Question 36

_________ is a traveling variation of pressure and density.

Answer 36

Sound

Question 37

What are the 2 types of waves?

Answer 37

Transverse and Longitudinal

Question 38

What is the relationship of Period & Frequency?

Answer 38

Inversely Proportional

Question 39

Defined by the difference between the peak (maximum) or trough (minimum) of the wave and the average value

Answer 39

Amplitude

Question 40

What is the unit of Amplitude?

Answer 40

Pascals or MPa

Question 41

Points of zero amplitude

Answer 41

Nodes

Question 42

Points of maximum amplitude

Answer 42

Antidnodes

Question 43

It appears to stand still, vibrating in place and always consist of an alternating pattern of nodes and antinodes.

Answer 43

Wave

Question 44

The number of cycles that occurs in one second.

Answer 44

Frequency

Question 45

What is the relationship of Pulse Repetition Period & Pulse Repetition Frequency?

Answer 45

Inversely Proportional

Question 46

Length of space that a pulse takes up.

Answer 46

Spatial Pulse Length

Question 47

Time from the beginning of one pulse to the next.

Answer 47

PRP

Question 48

no. of pulses occurring in 1 second.

Answer 48

PRF

Question 49

time it takes for one pulse to | occur.

Answer 49

Pulse Duration

Question 50

What is the relationship of Pulse Duration & Frequency?

Answer 50

Inversely Proportional PD increases if the frequency is decreased.

Question 51

What is the formula to get the velocity?

Answer 51

Velocity = Frequency x Wavelength | o C=𝐟𝞴

Question 52

Speed at which sound moves through a medium

Answer 52

Propagation Speed

Question 53

Indicates the fractional decreased in volume when pressure is applied to material

Answer 53

Compressibility

Question 54

Refers to the ability of an object to return to its | original shape and volume after force is no longer acting on it.

Answer 54

Elasticity/Stiffness of obeject

Question 55

What is Density?

Answer 55

Mass per unit volume

Question 56

Reciprocal of compressibility

Answer 56

Bulk Modulus / Hardness

Question 57

resistance of the material to compression or hardness

Answer 57

Stiffness

Question 58

Is the rate of energy transferred through the sound wave.

Answer 58

Power

Question 59

What is the unit of Power?

Answer 59

Watts

Question 60

proportional to the amplitude squared of a sound wave

Answer 60

Power P=𝐀𝟐