For the sufficient exclusion of a fracture the dose can be reduced to at least 39%, for the sufficient assessment of bony union and possible inflammatory changes to at least 42%, to position check and foreign body search to at least 23%. By DLR the following question-referred mAs-product at 50 kV are stated: fracture exclusion 2 mAs, bony union, arthritis and osteomyelitis 2.2 mAs, position check and foreign body search 1.25 mAs.

For the sufficient assessment of a possible fracture/of paranasal sinuses/of measurement of the skull the dose can be reduced to at least 56% (phi 31%; SD 14.9%)/40% (phi 27%; SD 9.3%)/18% (phi 14%; SD 4.4%). Digital radiography allows question-referred exposure parameters with clearly reduced dose, so e.g. for fracture exclusion 73 kV/12.5 mAs and to skull measurement 73 kV/4 mAs.

For the sufficient exclusion of a fracture the dose can be reduced on pelvis/LS to at least 39 %/28 % ( 23 %/17 %), for the assessment of sacroiliitis/osteolyses/demineralisation to at least 78 %/44 % ( 34 to 36 %/22 to 26 %), to position check after fracture to at least 15 %/25 % ( 9 %/10 %). Question-related tube current time products of the pelvis and LS can be deduced for various objects.