Ultrasound: Image Acquisition

10 Topics

Patient Information

Probe Orientation

Transducer Change

Selecting the Depth

Time Gain Compensation

Doppler and Colour Flow

Scanning Planes

10 Topics

Introduction to Artefacts

Common Ultrasound Artefacts

False Assumptions

Posterior Acoustic Shadowing

Post-cystic Enhancement

Mirror Image Artefact

Comet Tail Artefacts

Refraction Artefacts

1 Topic

3 Topics

Ultrasound: Image Acquisition

Ultrasound: Image Acquisition

Ultrasound: Image Acquisition Ultrasound: Image Acquisition

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Question 1 of 9

1. Question
1 point(s)
When considering ultrasound probe orientation…
- The indicator on the screen co-incides with the probe mark
- The mark on the probe always shows the patient’s right side
- The probe should be orientated to your right or the patient’s head
- The probe should be orientated to the patient’s right or their feet
- The probe may be held in any direction as the screen will compensate
Question 2 of 9

2. Question
1 point(s)
Colour flow
- Should be red if the flow is towards the probe
- Shows an artery as red and vein as blue
- Should be either red or blue in any fluid cavity
- Should be red if the flow is away from the probe
- Shows if free fluid is present
Question 3 of 9

3. Question
1 point(s)
When considering scanning planes
- Morison’s pouch is scanned in coronal plane
- Sagittal refers to the horizontal plane from the left side of the body to the right
- Sagittal refers to the horizontal plane from anterior to posterior
- Transverse refers to the horizontal plane from the left side of the body to the right
- Coronal refers to the horizontal plane from anterior to posterior
Question 4 of 9

4. Question
1 point(s)
With respect to artefacts
- They can be of use to the operator, as long as the operator is aware of them
- These are not common
- They are rarely an issue
- They are commonly due to poor quality ultrasound systems
- A good operator will mostly eliminate them
Question 5 of 9

5. Question
1 point(s)
The following artefacts are of no value
- Aliasing
- Comet tail artefacts
- Acoustic enhancement
- Shadowing
- Edge
Question 6 of 9

6. Question
1 point(s)
With respect to transducer choice
- A small foot print probe is better for imaging the heart
- A 10 MHz transducer would be the transducer of choice for a child’s abdomen
- An obese patient’s image would generally be improved by increasing the frequency
- If you need to change from a longitudinal to a transverse image then rotate clockwise
- Small probes are higher frequency and larger probes low frequency
Question 7 of 9

7. Question
1 point(s)
With respect to acoustic windows
- The liver is useful window for viewing the pericardium
- The upper midline abdomen gives an optimal window for the aorta
- The lungs allow good access to the heart
- Beginners should rotate the probe to help form an image
- They are created by extending the patient’s back
Question 8 of 9

8. Question
1 point(s)
The filled bladder demonstrates all but one of the following artefacts:
- Shadow artefact
- Acoustic enhancement
- Edge artefact
- Slice thickness artefact
- Bladder artefact
Question 9 of 9

9. Question
1 point(s)
The artefact which may be seen when looking for a stone is
- Shadow artefact
- Edge artefact
- Slice thickness artefact
- Mirror artefact
- Acoustic enhancement

6 Comments

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[email protected] October 27, 2017 at 8:00 pm

very basic but good for beginners

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Carlos Lojo Rial July 7, 2020 at 8:30 am

Good module

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Mrs. Katherine Clarke February 14, 2021 at 1:13 pm

Useful introduction to USS prior to FAMUS course

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Dr. Nour Kaf Al'Ghazal March 25, 2021 at 11:57 pm

very useful

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Dr Syed Shahbaz Ahmer March 24, 2023 at 3:04 pm

Great learning session

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Dr Maythem Abdulhassan Al-Kaisy July 18, 2024 at 9:19 pm

Nice refreshment of my knowledge

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