10. Historical Perspective – What is diagnostic? UK Survey of Patient Dose 1983-5 20 Hospitals 5 37 Pelvis AP 8 88 Abdomen AP 11 71 L Spine AP 4 43 T Spine AP 11 48 Chest PA 5 19 Skull AP Room Ratio Patient Ratio Examination
26. Skull Chest T Spine L spine Abdomen Pelvis Bitewing L Ob Breast UK National Diagnostic Reference Levels 2007 Ba Swallow Ba Meal Ba Enema IVU MCU Pyelography Coronary Angio Venography etc CT Head CT Chest CT Abdomen CT CA ChestAbdoPelvis (Paediatric CT and complete exams)
27. Variation of National DRL with time - Ba Enema : 75 th percentile threshold 1984 -2005 1984 2005
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33. Skull Chest T Spine L spine Abdomen Pelvis Bitewing L Ob Breast UK National Diagnostic Reference Levels 2007 Ba Swallow Ba Meal Ba Enema IVU MCU Pyelography Coronary Angio Venography etc CT Head CT Chest CT Abdomen CT CA ChestAbdoPelvis (Paediatric CT and complete exams)
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35. NDRL/ : LDRL A guide to the rather indistinct borderline between ‘good and normal practice’ and ‘bad and abnormal practice’ Local DRL NDRL