Which of the following is the most important means of keeping patient dose to a minimum?
altering the focal spot size
using automatic exposure control
using a high kVp and high mAs
using high kVp and lower mAs
using high kVp and lower mAs
Rationale: To keep patient dose in consideration, kVp should be selected that will adequately penetrate the part of interest, while mAs should remain as low as possible. Increasing the mAs factor can contribute most significantly to patient dose.
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