Physics 2 - Artifacts Module 6

Image broadening

What is this image representing

Test to see how lateral resolution is on probe

What is this image representing

White structures are all the same size, but same appear wider because of the beam width. If this changes over time than lateral resolution is getting worse

How do you check lateral resolution with the test in the image

Move the focus down

How would you fix this image

Acoustic speckle

What artifact is making this liver look sick

Reverberation

What is this image demonstrating

Reverb from baby's skull

What is this image demonstration

Move probe around it

How would you correct for this artifact

Can hind anatomy of baby's brain

Why can this specific artifact be hurtful

Reverb from metal IUCD

What is this image demonstrating

Gas in duodenum causing ring down

What does this image represent

Reverb from surgery (tubes tied)

What does this image represent

How the diaphragm creates a mirror image

What is this image showing

Mirror image of liver

What are these images representing

Edge shadow

What does this image represent

Interpolation

What is causing the edge shadowing to appear "not that bad"

Reverb

What artifact is 1

Edge shadowing

What artifact is 2

Edge shadowing

What artifact is represented in this image

How Rectus abdominus causes refractive duplication

What does this image represent

Refractive duplication causing appearance of 2 gestational sacs

What does this image represent

Two aortas from refractive duplication

What does this image represent

Reverb

What kind of artifact is the teal arrow pointing to

Side lobes

What kind of artifact is the yellow arrow pointing to

Propagation speed error

What artifact causes this

Because machine put diaphragm deeper than it is from propagation speed error

Why is this measurement probably not accurate

SV is not in vessel but PRF is so high it is getting Doppler info from unknown depths

Explain why this image represents range ambiguity

Shadow from calcified plaque

What is this image representing

Calcified bones causing shadowing

What does this image represent

Echoes just from enhancement of above structure

Why are the echoes in the arrow is pointing to not that concerning

Focal enhancement

What artifact is represented by this image

Aliasing

What is causing the spectral to be like this

Aliasing

What artifact is this

Can't tell what direction blood is going

Why is aliasing bad

doppler slice thickness

artifact

Twinkle artifact

What artifact is shown in this picture

Doppler mirror image

What artifact is this

Doppler mirror image

What artifact is this

Doppler flash or clutter

What artifact is this

Doppler noise

What artifact is this

Electrons interference

What is fault is causing this

60Hz bandwidth artifact

What is this called

Point spreading

What does this image show

Comet tail artifact

What does this image show

Ring-down artifact

What does this image show

Refractive duplication

What does this image show

Shadowing

What does this image show

Spectral aliasing

What does this image show

Colour aliasing

What does this image show

Colour Doppler mirror image

What does this image show

Noise

What does this image show

Edge shadowing artifact

What type of artifact does this image show

Enhancing artifact

What type of artifact does this image show

Reverberation artifact

What type of artifact does this image show

Slice thickness artifact

What type of artifact does this image show

Mirror image artifact

What type of artifact does this image show

Speed error artifact

What type of artifact does this image show