Ultrasound Part I

After a break (if you need it) complete our Career Prep topic that we did not do last week.

Part 2 - Job Offers

Go over the first part of our Ultrasound topic.
Kahoot review of what we've learned today

Part 1 - Ultrasound

The Plan for this morning

Quick review!

Multiple Choice

What are the white objects in this ultrasound image?

• Air pockets

• Bladder stones

• Fluid-filled sacs

Review!
11-13

Drag and Drop

The basic principle of ultrasound:

The ​

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​ (aka probe) produces ​​

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 waves. These waves enter tissues. Tissues have different ​

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, which affect the intensity and speed of the waves. The sound can be ​

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by the tissue, reflected by the tissue, or scattered by the tissue.

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transducer

sound

densities

absorbed

Categorize

Options (11)

Captured in real-time

Safety precautions due to exposure to radiation

Captures one moment in time

Evaluate the texture and functional ability of organs

Evaluate the size, shape and position of organs

No exposure to radiation

Used for monitoring fetal development

Utilizes sound waves to create images

Uses X-rays to create images

Shows the interior of organs

Shows the shape or organs

Categorize the following

Ultrasound

Radiograph

Review!
15-21

Multiple Choice

What are the elements in transducer probes made out of?

• Piezoelectric ceramics

• Glass and rubber
• Silicone and foam
• Wood and fabric

Multiple Choice

We would never do both x-rays and ultrasounds on the same patient.

It is either one modality or the other.

• True

• False

Multiple Choice

Ultrasound uses radiation, so PPE is required for it.

• True

• False

Multiple Choice

Ultrasound shows an image in real time.

• True

• False

Multiple Choice

Radiographs show the inside of a structure.

• True

• False

Multiple Choice

Tissues have different densities.  What are the three things that can happen to an ultrasound wave when it reaches a tissue?

• Transmission, scattering, and reflection
• Reflection, refraction, and distortion
• Absorption, refraction, and emission
• Reflection, absorption, or scattered.

Review!
27-34

Drag and Drop

Frequency determines the image detail and depth of sound penetration.

The higher the frequency, the better the ​

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.

The higher the frequency, the lower the depth of ​ ​

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.

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resolution

penetration

spaghetti

milliampere

Multiple Choice

Which ultrasound frequency is able to penetrate further into the abdomen?

• Higher frequency ultrasound (8-12 MHz).

• Lower frequency ultrasound (2-5 MHz).

Multiple Choice

What does "Attenuated" mean?

• Strengthened or enhanced.

• Unchanged or neutral in force.
• Weakened or loses energy

Drag and Drop

The ​

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the wavelengths, deeper the penetration.

The ​

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the wavelength, shallower the penetration

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longer

shorter

Match

Match the following

• Determines the image detail and depth of sound penetration

• Ability of an ultrasonic sound wave to travel into tissues (depth)

• Ability to distinguish between different tissues lying close to each other

Frequency

Penetration

Resolution

• Frequency

• Penetration

• Resolution

Multiple Choice

Which ultrasound wavelengths have a better resolution?

• Shorter ultrasound wavelengths have better resolution.
• Longer ultrasound wavelengths have better resolution.

Multiple Choice

Given the option of a 3 MHz or 7 MHz probe, which would you choose if you were preparing for an abdominal ultrasound on a ferret?

• 3 MHz probe

• 7 MHz probe

Review!
30-45

Multiple Choice

What is the most expensive part of an ultrasound machine?

• Control Panel

• Display screen
• Transducer

• Power supply

Multiple Choice

What kind of transducer probe is this?

• Linear

• Phased array

• Curvilinear

Multiple Choice

What type of ultrasound probe is this?

• Linear

• Phased array

• Curvilinear

Open Ended

What is circled in red on this transducer probe?

Drag and Drop

Transverse imaging plane the marker is to the patient's ​

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Longitudinal imaging plane the marker is to the patient's​

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right.

head.

left.

tail.

Open Ended

How do you prepare a patient for an abdominal ultrasound scan?

Review!
52-56

Match

Match the following

• Scans in a cross section of a line only.

• The traditional imaging mode

• Modality to assess the direction and velocity of blood flow

M mode

B mode

Doppler

• M mode

• B mode

• Doppler

Drag and Drop

With the colour Doppler for Ultrasound...

​

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is velocity AWAY from probe.

​

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is velocity TOWARD the probe.

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Blue

Red

Orange

Green

Review!
61-end

Multiple Choice

Which of the following is like the "volume" know on an ultrasound?

• Image contrast
• Gain control
• Depth control
• Frequency adjustment

Multiple Choice

Gain modifies the ____________________ and therefore affects the brightness of the image.

• strength of the returning echo

• frequency of the ultrasonic waves

• colour saturation of the doppler image

Drag and Drop

Too little gain = image will be too ​

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Too much gain = image will be too ​

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dark

white

grey

Multiple Choice

What does Time-Gain Compensation do?

• Adjusts signal gain based on the time delay to improve image clarity.

• Eliminates all noise from the signal.

• Is used to increase the size of the image.

• Reduces image resolution for faster processing.

Multiple Choice

What does the "depth" knob control on an ultrasound?

• Changes the color of the ultrasound image.

• Adjusts the volume and amplitude of the ultrasound sound waves.

• Sets the frequency of the ultrasound waves.

• Adjusts how far the transducer can send and receive sound waves.

End of Part 1

Kahoot Review, Short Break, Start Job Offers