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7 Cards in this Set
- Front
- Back
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TAR
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Tissue Air Ratio
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TAR equation
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Dd / Dfs: (free space in air) under SAD conditions
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How is TAR related to Energy?
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TAR increases with increased energy
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How is TAR related to FS?
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TAR increases with increased field size
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How is TAR related to depth?
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TAR decreases with depth (approx. exponentially) beyond build-up
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How is TAR related to SSD?
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TAR is independent of SSD
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How is TAR related to TMR?
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TAR = TMR * BSF
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