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Ultrasound: Image Acquisition

Patient Information

Probe Orientation

Transducer Change

Selecting the Depth

Time Gain Compensation

Doppler and Colour Flow

Scanning Planes

Introduction to Artefacts

Common Ultrasound Artefacts

False Assumptions

Posterior Acoustic Shadowing

Post-cystic Enhancement

Mirror Image Artefact

Comet Tail Artefacts

Refraction Artefacts

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
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The mark on the probe always shows the patient’s right side
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The probe should be orientated to your right or the patient’s head
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The probe should be orientated to the patient’s right or their feet
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The probe may be held in any direction as the screen will compensate
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Question 2 of 9

2. Question
1 point(s)

Colour flow

Should be red if the flow is towards the probe
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Shows an artery as red and vein as blue
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Should be either red or blue in any fluid cavity
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Should be red if the flow is away from the probe
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Shows if free fluid is present
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Question 3 of 9

3. Question
1 point(s)

When considering scanning planes

Morison’s pouch is scanned in coronal plane
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Sagittal refers to the horizontal plane from the left side of the body to the right
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Sagittal refers to the horizontal plane from anterior to posterior
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Transverse refers to the horizontal plane from the left side of the body to the right
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Coronal refers to the horizontal plane from anterior to posterior
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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
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These are not common
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They are rarely an issue
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They are commonly due to poor quality ultrasound systems
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A good operator will mostly eliminate them
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Question 5 of 9

5. Question
1 point(s)

The following artefacts are of no value

Aliasing
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Comet tail artefacts
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Acoustic enhancement
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Shadowing
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Edge
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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
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A 10 MHz transducer would be the transducer of choice for a child’s abdomen
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An obese patient’s image would generally be improved by increasing the frequency
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If you need to change from a longitudinal to a transverse image then rotate clockwise
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Small probes are higher frequency and larger probes low frequency
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Question 7 of 9

7. Question
1 point(s)

With respect to acoustic windows

The liver is useful window for viewing the pericardium
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The upper midline abdomen gives an optimal window for the aorta
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The lungs allow good access to the heart
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Beginners should rotate the probe to help form an image
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They are created by extending the patient’s back
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Question 8 of 9

8. Question
1 point(s)

The filled bladder demonstrates all but one of the following artefacts:

Shadow artefact
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Acoustic enhancement
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Edge artefact
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Slice thickness artefact
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Bladder artefact
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Question 9 of 9

9. Question
1 point(s)

The artefact which may be seen when looking for a stone is

Shadow artefact
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Edge artefact
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Slice thickness artefact
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Mirror artefact
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Acoustic enhancement
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10 Comments

[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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Dr Uche Maduabuchi Dennis Iheukor March 31, 2025 at 3:37 am

Great learning exercise

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Mrs Deepika Sagar Pyda May 20, 2025 at 3:52 pm

its very helpful topic and informative regarding different artefatcs which should be considered whne performing ultrasound

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Dr Muntasir Eltayeb Hassan Elsheikh October 7, 2025 at 6:03 pm

Great learning session

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Dr John Akinola February 2, 2026 at 2:51 pm

great learning

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