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Piezoelectric Effect and Transducer Basics

Total questions: 85

Worksheet time: 42mins

Name
Class
Date
1.

Samuel is working in a hospital and needs to use an ultrasound system to examine a patient. Which statement best describes the role of the transducer in the ultrasound system?

a)

Device converting one energy form into another

b)

Housing preventing acoustic reflections from tissue

c)

Component storing mechanical energy for later use

d)

Instrument amplifying electrical signals only

2.

Lily is designing an ultrasound device and needs to ensure the transducer element resonates efficiently. How thick should she make the active transducer element relative to the sound wavelength?

a)

One full wavelength thickness

b)

Half wavelength thickness

c)

Variable thickness independent of wavelength

d)

Quarter wavelength thickness

3.

Abigail is studying how ultrasound machines work in her medical technology class. She learns that a specific man-made ceramic is commonly used in modern ultrasound transducers. Which material is it?

a)

Lead zirconate titanate (PZT)

b)

Barium titanate polymer

c)

Aluminum oxide ceramic

d)

Silicon carbide composite

4.

Scarlett is working on a science project about natural piezoelectric materials. She needs to correctly identify which materials exhibit piezoelectric properties. Which of the following options should Scarlett choose?

a)

Quartz, Rochelle salt, tourmaline

b)

Graphite, mica, kaolinite

c)

Quartz, obsidian, feldspar

d)

Diamond, sapphire, ruby

5.

During the manufacturing of PZT sensors, Harper needs to ensure the material is heated to a specific temperature so that its polarization is set. What is this temperature called?

a)

Temperature where elasticity maximizes

b)

Temperature where polarization is set

c)

Temperature where magnetism is strongest

d)

Temperature where acoustic output peaks

6.

Charlotte is using an ultrasound machine to examine a patient. In the diagram, which component is directly responsible for emitting and receiving ultrasound waves?

a)

Piezoelectric crystal element

b)

Electrodes attached to housing

c)

Insulation around the cable

d)

Backing material behind the face

7.

David is working with ultrasound equipment and needs to ensure optimal performance at the transducer face. What is the primary function of matching layers at the transducer face?

a)

Improve acoustic impedance matching

b)

Protect crystal from mechanical fractures

c)

Reduce cable electromagnetic noise

d)

Increase thermal conduction to housing

8.

James is assembling an ultrasound probe and notices that a backing material is placed behind the piezoelectric crystal. Why is this backing material used?

a)

To focus the beam mechanically

b)

To amplify electrical drive voltage

c)

To damp ringing and broaden bandwidth

d)

To insulate the cable from shock

9.

During a routine ultrasound examination, Olivia notices a crack in the transducer housing. What could be the most immediate risk?

a)

Increased cable tensile stiffness

b)

Detuning of the matching layers

c)

Loss of axial resolution only

d)

Electrical shock to user or patient

10.

During an ultrasound examination, Sophia notices that the transducer is carefully insulated. Why is the transducer insulated even beyond image quality considerations?

a)

To prevent outside electrical interference

b)

To protect both the user and patient

c)

To reduce thermal noise in circuitry

d)

To decrease cable resistance substantially

11.

Scarlett is working with an ultrasound machine and notices that the damping layer affects the emitted pulse. What is the primary effect of the damping layer on the emitted pulse?

a)

Shortens pulse by reducing cycles

b)

Increases pulse by adding cycles

c)

Keeps pulse length unchanged

d)

Randomizes cycles within the pulse

12.

Priya is working with an ultrasound machine and wants to improve the clarity of the images by adjusting the damping. How does increased damping influence axial resolution?

a)

Improves lateral resolution only

b)

Has no effect on axial resolution

c)

Degrades axial resolution by longer pulses

d)

Improves axial resolution by shorter pulses

13.

Scarlett is tuning a radio and wants to understand how selective the radio is at picking up a specific station. She learns that the quality factor (Q-factor) of the radio circuit is a key measure. Quality factor (Q-factor) is best defined as:

a)

Operating frequency minus bandwidth

b)

Bandwidth plus operating frequency

c)

Bandwidth divided by operating frequency

d)

Operating frequency divided by bandwidth

14.

Emma is designing an ultrasound device and chooses a transducer for diagnostic imaging. Which Q-factor characteristic will this transducer most likely exhibit?

a)

Low Q-factor due to broad bandwidth

b)

High Q-factor due to narrow bandwidth

c)

Moderate Q-factor with fixed bandwidth

d)

Variable Q-factor independent of bandwidth

15.

Ava is working with ultrasound transducers in a medical lab. She notices that using strong damping improves image resolution. What trade-off accompanies strong damping in terms of transducer performance?

a)

Decreased sensitivity to weak echoes

b)

Increased sensitivity to weak echoes

c)

No change in sensitivity to echoes

d)

Eliminated need for matching layers

16.

Maya is using an ultrasound device to examine a patient's skin. Without a matching layer between the piezoelectric element and the skin, approximately what percentage of sound would be reflected?

a)

About twenty percent reflection

b)

About fifty percent reflection

c)

About five percent reflection

d)

About eighty percent reflection

17.

James is designing an ultrasound transducer and needs to select the correct thickness for the matching layer to optimize sound transmission. What is the typical thickness specification for a transducer matching layer?

a)

One-quarter of the wavelength

b)

One-half of the wavelength

c)

Three-quarters of the wavelength

d)

One-eighth of the wavelength

18.

Noah is preparing to perform an ultrasound scan and needs to select an acoustic coupling gel. The gel must be specially formulated to have an impedance value:

a)

Lower than ambient air only

b)

Higher than the backing material

c)

Between matching layer and skin

d)

Equal to piezoelectric ceramic

19.

Grace is using an ultrasound machine to examine tissue. As the sound beam exits the transducer and travels into the tissue, how does its diameter behave?

a)

Widens linearly without narrowing

b)

Randomly fluctuates with frequency

c)

Varies with distance in an hourglass pattern

d)

Remains constant from near to far field

20.

Benjamin is learning about ultrasound imaging. He wants to know which term names the region from the transducer face up to the focus. What is the correct term?

a)

Focal point region

b)

Axial resolution band

c)

Far zone (Fraunhofer zone)

d)

Near zone (Fresnel zone)

21.

During an ultrasound examination, Maya is adjusting the equipment to focus the sound waves at a specific point within the tissue. What is the distance from the transducer to the focus specifically called?

a)

Focal depth (near zone length)

b)

Beam width at focus

c)

Far-field spread distance

d)

Axial penetration length

22.

Mason is adjusting an ultrasound machine and wants to increase the focal depth without changing the transducer frequency. Which change should Mason make?

a)

Using a larger aperture diameter

b)

Reducing aperture diameter

c)

Increasing beam divergence

d)

Lowering lateral resolution

23.

Kai is using an ultrasound machine to examine a patient. He notices that at the narrowest, highest-intensity portion of the sound beam, there is a specific point. What is this point called?

a)

Focal point (focus)

b)

Near-field maximum

c)

Fraunhofer vertex

d)

Diffraction node

24.

James is using an ultrasound machine to examine a material. After the focus point, he notices that the beam starts to spread out. Within which region does this occur, and what phenomenon causes this?

a)

Near zone with interference

b)

Focus region with reflection

c)

Far zone with diffraction

d)

Near zone with refraction

25.

Benjamin is setting up a laser pointer for a science experiment and wants to know which setup will cause the beam to spread out more in the far field. Which combination leads to more divergence in the far field?

a)

Smaller aperture with zero diffraction

b)

Larger aperture or higher frequency

c)

Smaller aperture or lower frequency

d)

Higher frequency with longer near zone

26.

Oliver is learning about ultrasound imaging techniques in his medical class. He wants to know: which statement best distinguishes mechanical from electronic scanning in ultrasound imaging?

a)

Electronic uses a single element with lens-only focusing

b)

Electronic relies on mirror steering for sector formation

c)

Mechanical uses phased time delays across many elements

d)

Mechanical uses a single element with motor steering

27.

During a real-time ultrasound scan in a hospital, Aria is observing the monitor as the transducer moves across a patient's abdomen. What primarily produces the scan lines that appear on the screen?

a)

Pulses of ultrasound emitted by the transducer

b)

Magnetic resonance gradients within the probe

c)

Mechanical rotation of the patient table

d)

Continuous wave output from the power supply

28.

Zoe is working with a mechanical scan-head in a medical imaging lab. She needs to produce a sector image for an ultrasound scan. How were scan lines commonly steered in such devices to create the sector image?

a)

Electronic sequencing of sub-elements

b)

Manual repositioning of the patient

c)

Phased time delays across an array

d)

A motor moved the element or a mirror

29.

Noah is working in a hospital and is using a mechanical transducer for ultrasound imaging. He notices that if the transducer fails, the entire image is lost. What is a major disadvantage associated with mechanical transducers?

a)

Need for complex phasing to focus beams

b)

Excessive cost due to many channels

c)

Limited ability to form sector-shaped views

d)

Complete loss of the image upon failure

30.

Aria is working in a medical imaging lab and needs to perform electronic scanning for an ultrasound machine. Which configuration of transducer elements should Aria use?

a)

A single element connected to a motor

b)

A continuous-wave emitter without channels

c)

Multiple active elements forming an array

d)

A mirror system that redirects a beam

31.

Olivia is learning about array transducers in her electronics class. She wonders: In an array transducer, each sub-element is connected to what?

a)

A rotating mirror assembly

b)

A wire called a channel

c)

A single shared lens

d)

A fixed mechanical coupler

32.

Noah is setting up an array of sensors to capture images for a security system. He wants to know which statement about arrays is accurate regarding image formation.

a)

Arrays only produce linear images by default

b)

Arrays cannot focus without external lenses

c)

Arrays require motors for beam steering

d)

Arrays can be sequenced or phased for shapes

33.

Ava is working with an ultrasound machine that uses array transducers. She needs to adjust the settings to achieve a specific imaging result. What does phasing accomplish in array transducers?

a)

Aligns mechanical mirrors for sectoring

b)

Steers and focuses the ultrasound beam

c)

Reduces electrical noise from channels

d)

Increases element thickness uniformly

34.

Priya is working with an ultrasound machine and needs to adjust the beam for optimal imaging. How do time delays influence beam behavior during phasing?

a)

Longer delays always increase image brightness

b)

Shorter delays convert sector to linear format

c)

Uniform delays eliminate all side lobes

d)

Timing of excitation determines steering and focusing

35.

Evelyn is working in a medical imaging lab and is comparing different types of ultrasound transducers. She notices that most array transducers do not require motors for their operation. Why are motors generally unnecessary in most array transducers?

a)

Mechanical focusing is inherently unstable

b)

Channel wiring replaces lens mechanisms

c)

Electronic phasing provides beam steering

d)

Sequencing requires physical rotation of elements

36.

Liam is operating an ultrasound machine and wants to adjust the image by steering and focusing the beam. Which statement best describes what Liam should do using phasing in ultrasound arrays?

a)

Increasing transmit power to deepen penetration

b)

Delaying element firing to steer and focus

c)

Changing receiver gain to reduce noise

d)

Rotating the probe to widen field of view

37.

James is working with an ultrasound machine that uses a linear sequenced array without beam steering. Which image footprint will James observe on the screen?

a)

Elliptical panoramic view

b)

Circular annular footprint

c)

Triangular sector image

d)

Rectangular field of view

38.

Imagine Jackson is setting up a row of sprinklers in his garden, each connected in a straight line. In a linear sequenced array like this, how are the sprinklers typically activated?

a)

In small groups along the line

b)

All elements simultaneously

c)

Single element rotates mechanically

d)

Random elements based on echo

39.

During a routine ultrasound examination, Liam notices an unusual artifact on the image produced by a linear sequenced array transducer. Which complication is commonly associated with linear sequenced arrays?

a)

Vertical drop-off artifacts

b)

Excessive lateral blooming

c)

Speckle decorrelation

d)

Ring-down reverberations

40.

William is a sonographer working in a busy hospital. He needs to select the appropriate ultrasound transducer for his exam. Which clinical application is most commonly associated with linear sequenced arrays?

a)

Transcranial Doppler

b)

Vascular and small parts

c)

Obstetric biometry

d)

Cardiac stress testing

41.

Scarlett is performing an ultrasound scan and notices that the image appears blunted because of the shape of the transducer's face. Which transducer is she most likely using?

a)

Phased sector array

b)

Annular mechanical probe

c)

Curved (convex) array

d)

Linear sequential array

42.

William is working in a medical imaging lab and is asked to identify the array type that curved array technology is based on. Which array type should William select?

a)

Matrix 2D array

b)

Mechanical sector scanner

c)

Annular ring array

d)

Linear sequenced array

43.

Noah is a medical student observing different ultrasound procedures. He notices that some clinical studies use curved arrays. In which type of studies is Noah most likely to see curved arrays being used?

a)

Abdominal and OB/GYN

b)

Vascular and thyroid

c)

Musculoskeletal dynamic

d)

Neonatal cranial

44.

Mason is setting up a modern ultrasound machine in a hospital. He needs to ensure the device uses the most common focusing approach found in modern array transducers. What method should Mason expect the machine to use?

a)

Mechanical focusing with motors

b)

Manual knob-based focusing

c)

Acoustic lens only focusing

d)

Electronic phasing techniques

45.

James is working in a medical imaging lab and is comparing different ultrasound images. He notices that some images are rectangular while others are sector-shaped. Compared with sector images, rectangular images most likely come from which array?

a)

Annular ring configuration

b)

Phased sector configuration

c)

Linear sequenced configuration

d)

Mechanical single-element

46.

Daniel is working with ultrasound equipment and needs to steer a narrow sector footprint from a small aperture by adjusting timing changes. Which array should Daniel use?

a)

Annular array

b)

Linear array

c)

Curved array

d)

Phased array

47.

During an ultrasound training session, Michael is learning about the risks associated with different types of transducer arrays. He is asked: Which artifact risk is noted as major for both linear and curved arrays?

a)

Vertical drop-off

b)

Side lobe clutter

c)

Beam scalloping

d)

Mirror image doubling

48.

Daniel is working in a medical imaging lab and needs to select a transducer for an ultrasound machine. He requires a configuration that is mechanically steered but electronically focused. Which transducer should Daniel choose?

a)

Annular array using motor steering

b)

Linear sequential array with phased focus

c)

Curvilinear array with electronic sweep

d)

Phased array with electronic steering

49.

Maya is designing a new type of ultrasound probe. She wants the elements to be arranged in a geometric pattern that allows for precise focusing, similar to how annular arrays are constructed. How are the elements in an annular array arranged?

a)

Randomly distributed circular patches

b)

Parallel rectangular strips connected together

c)

Concentric circular rings like a bulls‑eye

d)

Triangular wedges forming a hexagon

50.

During a medical imaging workshop, Mason is learning about different ultrasound transducers. He is asked: Which image shape is produced by both annular and phased array transducers?

a)

Linear strip image with rectangular field

b)

Elliptical image with rounded edges

c)

Sector image that is pie‑shaped

d)

Square image with uniform width

51.

Grace is working in a hospital's ultrasound department and is evaluating different types of transducers for cardiac imaging. She notices that phased array transducers have a particular drawback. Phased array transducers primarily suffer from which limitation?

a)

High thermal index under Doppler

b)

Poor axial resolution due to bandwidth

c)

Poor steering and focusing capabilities

d)

Limited penetration in low frequencies

52.

Aria is working with a phased array ultrasound machine in a hospital. She needs to steer and focus the ultrasound beam to get a clear image of a patient's heart. What method should Aria use?

a)

Mechanical motor rotation of the housing

b)

Electronic phasing of element timing

c)

Acoustic lens refraction across elements

d)

Manual tilt with ergonomic handle

53.

Jackson is setting up a continuous wave (CW) ultrasound machine in a clinic. He wants to understand how the frequency of the CW transducer is determined. Which statement correctly describes CW transducers?

a)

CW frequency adjusted by acoustic lens shape

b)

CW frequency governed by applied voltages

c)

CW frequency determined by beam former delays

d)

CW frequency set by PZT thickness and speed

54.

Emma is setting up an ultrasound lab and needs to choose a dedicated CW transducer for continuous wave Doppler studies. What component arrangement should she expect to find in this type of transducer?

a)

Single element alternating transmit and receive

b)

Three elements for phased beam steering

c)

Array of rings for concentric focusing

d)

Two elements, one transmit and one receive

55.

Noah is working in a medical imaging lab and needs to select a PW transducer for an ultrasound machine. He wants to understand which physical factors primarily determine the operating frequency of the transducer. Which should he consider?

a)

Acoustic lens curvature and gel impedance

b)

Applied voltage and duty cycle of pulses

c)

Propagation speed in PZT and element thickness

d)

Beam former delays and aperture size

56.

Benjamin is designing a piezoelectric transducer for a medical ultrasound device. He is considering how the thickness of the PZT element will affect the device's pulsed wave (PW) operating frequency. What will happen to the operating frequency if Benjamin uses a thicker PZT element?

a)

Thicker element yields higher frequency tone

b)

Thinner element yields lower frequency tone

c)

Thicker element yields lower operating frequency

d)

Thickness does not influence resonant frequency

57.

When Nora and Grace both play the same note on their musical instruments in perfect sync (in-phase), what is the typical result?

a)

Constructive interference forming a larger resultant wave

b)

Destructive interference reducing the resultant amplitude

c)

No interference due to phase neutrality

d)

Frequency doubling without amplitude change

58.

Charlotte and Henry are playing music together. If the sound waves from their instruments are out-of-phase and overlap, what will most likely happen?

a)

Phase locking that increases frequency only

b)

No change because phases average out

c)

Constructive interference with amplified amplitude

d)

Destructive interference with reduced resultant amplitude

59.

During an ultrasound scan in a hospital, Samuel observes how the device creates images using sound waves. Which statement integrates interference and Huygen’s principle in ultrasound imaging?

a)

Destructive interference prevents any wavefront formation in transducers

b)

Constructive interference only occurs with electrical signals, not sound

c)

A single large source emits a wave that ignores interference effects

d)

Wavelets from many point sources combine via interference to create a propagating wavefront

60.

Emma is performing an ultrasound scan to check for abnormalities in a patient's tissue. She wants to ensure that she can distinguish two structures that are very close to each other along the direction of the ultrasound beam. Which statement best defines axial resolution in ultrasound imaging?

a)

Minimum distance reflectors parallel to beam appear separate

b)

Minimum distance reflectors above and below beam appear separate

c)

Minimum distance reflectors perpendicular to beam appear separate

d)

Ability to distinguish different shades of gray in an image

61.

Olivia is working with an ultrasound machine and wants to improve the clarity of the images she is capturing. She learns that axial resolution is primarily determined by which parameter?

a)

Full spatial pulse length of the pulse

b)

Transducer beam width across the field

c)

Number of bits stored per pixel

d)

Half the spatial pulse length of the pulse

62.

Charlotte is studying for her ultrasound physics exam and wants to remember the common synonyms or mnemonic associated with axial resolution. Which group should she focus on?

a)

Section thickness slice elevational plane terms

b)

Angular transverse azimuthal lateral LATA

c)

Dynamic aperture active elements number control

d)

Longitudinal axial radial range depth LARRD

63.

Emma is using an ultrasound machine to examine a patient's tissue. She wants to distinguish two small structures that are side by side within the imaging plane. Lateral resolution refers to which directional separation of these reflectors?

a)

Parallel to the beam along propagation axis

b)

Perpendicular to the beam within imaging plane

c)

Above and below the beam out of imaging plane

d)

Across grayscale differences in pixel values

64.

While performing an ultrasound scan, Mia wants to achieve the best possible lateral resolution to clearly distinguish between two closely spaced structures. Which factor most strongly determines the quality of lateral resolution in her scan?

a)

The beam width across the scan line

b)

Half the spatial pulse length

c)

Pulse repetition frequency setting

d)

Number of bits per image pixel

65.

Charlotte is working with an ultrasound machine and wants to improve the lateral resolution of her images. She considers using dynamic aperture. Dynamic aperture primarily affects lateral resolution by doing what?

a)

Expanding elevational thickness of slice

b)

Shortening spatial pulse length of pulse

c)

Increasing bits per pixel to add shades

d)

Varying active elements to narrow the beam

66.

During an ultrasound scan, Nora is trying to distinguish between two closely spaced structures. Elevational resolution describes separation of reflectors in which plane?

a)

Across contrast differences between pixels

b)

Perpendicular above and below the beam

c)

Parallel along the beam propagation

d)

Perpendicular within the imaging plane

67.

Priya is designing a new ultrasound transducer and wants to achieve the thinnest elevational plane for improved image quality. Which design feature should she focus on?

a)

Wider beam width across the field

b)

Shorter spatial pulse length emission

c)

Increased bits per pixel allocation

d)

Curved elements within the transducer

68.

While performing an ultrasound scan, Maya wants to ensure she gets the best elevational resolution thickness. What primarily determines this?

a)

The beam width in the slice plane

b)

Dynamic aperture element variation

c)

Pixel matrix bits per pixel count

d)

Half the spatial pulse length value

69.

During an ultrasound examination, Avery is trying to distinguish between tissues that appear very similar. What capability of the ultrasound machine is Avery relying on?

a)

Limit slice thickness above and below

b)

Separate reflectors perpendicular to beam

c)

Separate reflectors parallel to beam

d)

Distinguish different shades of gray

70.

Grace is working with digital images in a medical lab and wants to improve the contrast resolution of her scans. Which factor sets the limit on contrast resolution in a digital image?

a)

Dynamic aperture configuration

b)

Width of the acoustic beam

c)

Number of bits assigned per pixel

d)

Spatial pulse length of the pulse

71.

Scarlett is working on a project that requires a material which can generate an electric charge when mechanical stress is applied. Which of these materials should Scarlett choose for her project?

a)

Copper.

b)

Iron.

c)

Quartz.

d)

Gold.

72.

Grace is performing an ultrasound scan and wants to improve the temporal resolution of her images. Which 2 factors should she consider?

a)

speed of sound and depth of view

b)

focal zones and sector depth

c)

pixel size and sector size

d)

propagation speed and frame rate

73.

Emma is adjusting the settings on an ultrasound machine to optimize temporal resolution for a cardiac exam. All of the following changes she makes decrease temporal resolution except:

a)

narrower sector

b)

deeper imaging

c)

multi-focus

d)

lower frame rate

74.

Emma is using an ultrasound probe for a medical scan. She wants to know the width of the active element in the probe. What is the width of the active element?

a)

1/4 of the wavelength

b)

1/2 of the wavelength

75.

Jackson is using a linear phased array transducer to examine a patient's organ. The phasing on this transducer will produce a beam with a deep focus?

a)

True

b)

False

76.

Harper is training to become a medical sonographer and is learning to identify different types of ultrasound transducers. During a practical session, Harper is shown the transducer in the image shown and is asked: What is the name of this transducer?

a)

linear phased array

b)

annular phased array

c)

mechanical

d)

linear sequential array

77.

During an ultrasound scan, Mia noticed that the color box on the screen was shaped like a parallelogram. What transducer can create this image?

a)

Annular array

b)

Phased array

c)

Curved sequential array

d)

Vector array

78.

Aiden is reviewing an ultrasound image labeled "CHRONIC PANCREATITIS" in a hospital setting. What kind of transducer produced this image?

a)

Linear phased

b)

Vector array

c)

Linear sequential

d)

Annular phased

79.

Daniel is working with an ultrasound machine and notices a specific pattern of electrical spikes being applied to the transducer elements, as shown in the image. What impact does this electrical spike pattern create on the resulting ultrasound image?

a)

Narrow the beam

b)

increases strength of voltages in center of elements

c)

reduces voltage on outer elements

d)

reduces grating lobes

80.

David is using an ultrasound machine to examine a patient's organ. He notices that the transducer moves to direct the ultrasound beams across the area. Using the image given, how is this transducer steered?

a)

mechanically

b)

phasing electronic

c)

small group of crystals are fired at one time and then the next group is fired

d)

slope pattern of phasing

81.

Abigail is learning about ultrasound machines in her medical technology class. She discovers that generally, modern transducers called ____ contain multiple active elements.

a)

arrays

b)

elements

c)

crystals

d)

channels

82.

Olivia is working in a medical imaging lab and is using an ultrasound machine to focus sound waves for a detailed scan. The diagram shows the method she is using. What is this diagram depicting?

a)

focusing with a linear switched array

b)

focusing with a linear phased array

c)

steering with an annular phased array

d)

steering with a linear switched array

e)

steering with a linear phased array

83.

While performing an ultrasound scan, Daniel notices something unusual on the monitor. If one of the crystals in the transducer seen above is damaged, what happens to the image?

a)

a horizontal band of dropout

b)

inconsistent beam steering and focusing

c)

a band of dropout extending from the top to bottom of the image

84.

Benjamin is assembling a linear transducer for a science project. How should he arrange the active elements?

a)

in a circular pattern

b)

side by side in a straight line

c)

trapezoidal

85.

Abigail is using an ultrasound machine to scan a patient. What will happen to the image if a crystal in the probe shown is broken?

a)

no image

b)

side to side band (horizontal)- image drop out

c)

vertical band drop out

d)

Loss of phasing capabilities