( @ ) incidence of delayed diagnoses , ( @ ) diagnostic accuracy , as correlated to the reference standard of a synopsis of all subsequent clinical , imaging , surgical and autopsy findings , ( @ ) patients ' safety , ( @ ) radiation exposure ( e.g. effective dose ) , ( @ ) subjective image quality ( assessed independently radiologists and trauma surgeons on a @-mm visual analogue scale ) , ( @ ) objective image quality ( e.g. , contrast-to-noise ratio ) .