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DR 600 | Ceiling Suspension | 195
Effect of SID on patient dose
Changing the distance of the X-ray tube to the patient affects the dose applied
to the patient.
For example doubling the distance reduces the dose by a factor of 4. The new
dose can be calculated by a formula:
2
2
new mAs = known mAs × ( new distance
/ old distance
)
3261K EN 20210708 0808
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