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7 Cards in this Set
- Front
- Back
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Resolution |
The ability to create accurate images -to distinguish 2 structures |
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4 types of resolution |
Temporal Contrast Lateral Axial |
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Temporal resolution |
Ability to accurately look at moving structures at a particular instant time (Real time image) -production of motion picture |
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Spatial resolution (2) |
Axial resolution Lateral resolution |
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Axial resolution |
Front and back -⬆frequency will improve AR -⬇pulse strength Units: mm or any distance units Determined by: spl Adjustable: no Synonyms: LARRD Longitudinal Axial Range Radial Depth |
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Axial resolution formula |
AR= 1/2 spl =1/2 x N x wavelength |
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How to improve axial resolution |
-increase frequency high frequency Tx -reduce # of cycles by using damping material -axial resolution is improved by decreasing spl and wavelength |
