Establishment of local diagnostic reference levels in paediatric screen-film radiography at a children's hospital.

To assess the frequency of examination, image quality (IQ) and establishment of local diagnostic reference levels (LDRLs) in paediatric radiographic examinations. The X-ray device performance, film reject rate and IQ grading were assessed at Radiology Department of a referral and teaching children's hospital in Kenya. A questionnaire method was developed and used in recording the exposure factors used to indirectly calculate patient doses.