Which of the following statements is/are true? Off-focus an…
Which of the following statements is/are true? Off-focus and off-level grid errors result in a decreased density across the entire image. In order to see a visible difference in OD using the 15% rule, a minimum of one half (or 7.5%) is needed. In utilizing the air gap technique, a minimum of 6 inches OID is needed. In a variable-aperture collimator, the second set of shutters is 3 to 7 inches below the x-ray tube and serve to minimize penumbra.
Read DetailsA satisfactory exposure is made on a patient using 85 kVp an…
A satisfactory exposure is made on a patient using 85 kVp and 8 mAs measuring 20 cm. Another exposure of the same part is needed on a patient that measures 15 cm. Using a Fixed kVp-Variable mAs technique chart, which of the following sets of technical factors should be used?
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