Beam through patient and grid
cross-section across the lead strips · strip spacing exaggeratedPrimaryScatterAbsorbed by lead stripsReaches the image receptor
Image receptor
digital processing on · brightness auto-scaledExposure index
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On target
Primary through grid (Tp)
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Scatter through grid (Ts)
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Selectivity (Tp/Ts)
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mAs needed
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Grid lines
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Focal range
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