Article

PEDIATRIC EFFECTIVE DOSES IN DIAGNOSTIC RADIOLOGY

01/1998;

ABSTRACT Pediatric effective doses can be obtained for any radiologic examination using the selected radiographic technique factors (kV/mAs), the exposure geometry and the patient mass. The energy imparted ε to the patient may be computed from the exposure area product, x-ray tube voltage, half-value layer and patient thickness. Values of energy imparted may be subsequently converted to an effective dose E using published radiographic projection specific E/ε ratios determined using Monte Carlo techniques applied to anthropomorphic phantoms, with a correction applied for the patient mass. Pediatric effective doses (head, chest, abdomen and extremity) were computed for representative adult patients, as well as for pediatric patients ranging from new born to 15 year old youths. Values of patient effective dose were dependent on body size, selected technique factors as well as the type of radiographic imaging equipment used, with no clear trends for effective dose with patient age.

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