When performing an AP knee, which technical considerations would apply?
grid, small focal spot with 70 kVp
grid, large focal spot with 70 kVp
non-grid, small focal spot with 75 kVp
non-grid, small focal spot with 70 kVp
grid, small focal spot with 70 kVp
Rationale: Improved detail will result with selection of a small focal spot. Part thickness of an adult knee compares to an adult shoulder. Thicknesses over 10 cm require imaging with a grid. Due to part thicknesses, kVp for knee with a grid begins at 70.
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