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15 Cards in this Set
- Front
- Back
- 3rd side (hint)
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The artifact associated with multiple reflections equally spaced is: |
Reverberation |
Think of vibrating |
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The artifact associated with a change in sound direction as it crosses an interface is: |
Refraction |
Think of something bouncing back |
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The artifact associated with displaying structures that lie parallel to the sound beam path as one reflector is: |
Axial resolution artifact |
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The artifact which display two structures that lie perpendicular to the sound beam as one reflector is |
Lateral resolution artifact |
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The artifact where a fluid filled cyst may be filled in is |
Slice thickness artifact |
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Weak reflections that are returned from sound beams outside the main beam are called |
Side lobes |
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The silastic Ball of a starr– Edwards (first type of mechanical mitral valve ball and cage). The prosthetic valve has a propagation speed of 980 m/s. The ball will be placed on the display: |
Too far |
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Shadowing |
Involves the reduction in the amplitude and intensity of returning echoes due to intervening high attenuation structures |
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All of the following may be associated with the artifact shadowing except |
Pleural effusion |
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Enhancement |
Involves the increase in the amplitude and intensity of returning echoes due to intervening low attenuating structures |
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Which of the following is associated with enhancement |
Pericardial effusion |
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The artifact which may cause the sonographer to fail to detect prosthetic mitral valve regurgitation is |
Shadowing |
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If a signal enhancement occurs distal to a lesion in the breast, what is the most likely composition of the lesion |
Fluid |
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Identify the artifact that would have occurred if A lesion is depicted in two locations which are symmetrical with respect to the diaphragm |
Mirror image |
Mirror mirror on the diaphragm |
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Identify the artifact that would have occurred if the diaphragm shows a discontinuity distal to a lesion |
Velocity error |
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