[Clinical and radiological aspects of dysplasia of the hip. 4th report: Radiation exposure in the early diagnosis during the first three months (Volume-dose) (author's transl)].

Calculations of the relative volume-dose for 1 and 4-month-old infants yielded a ratio of 1:2. Measurements in the phantom and newborns yielded a surface incidence dose for newborns of 1/400 of the annual environmental radiation surface incidence dose (with optimal radiographic technique). The radiation risk of the pelviogram for newborns and during the first three month period can be justified. Indicated radiographic examination for diagnostic clarification of dysplasia of the hip should not be omitted during the first three months period.