Use of a full-body digital X-ray imaging system in acute medical emergencies: a systematic review.

BACKGROUND: To evaluate the available evidence for the clinical effectiveness and biohazard safety of a full-body digital X-ray imaging system (Lodox) in acute medical emergencies. METHODS: Electronic databases (including PubMed, Embase and the Cochrane Library; up to January 2014) and reference lists of articles were searched. The quality of the included studies was determined, and a narrative assessment was undertaken. RESULTS: A total of 256 articles were reviewed. Fifteen clinical studies and eight case series met the eligibility criteria. All 23 studies reporting use of a full-body X-ray imaging system in acute medical emergencies on Lodox. Based on figures in six studies comprising various evaluation methods, image quality of Lodox was mostly comparable to that of conventional X-rays and the radiation dose was considerably lower. Lodox demonstrated a sensitivity ranging from 62% to 73%, and a specificity ranging from 99% to 100% compared with CT for the evaluation of emergency patients with polytrauma, which is similar to that of conventional X-rays. Examination time using Lodox ranged from 3.5  to 13.9 min compared with 8 to 25.7 min using conventional X-rays. However, there was no evidence it significantly shortened resuscitation time or emergency department length of stay. Publication bias might have occurred; some published studies might have been influenced by conflicts of interest. CONCLUSIONS: The Lodox machine is capable of rapidly scanning the entire body and offers an equivalent diagnostic assessment tool compared with conventional X-rays. It seems to have the potential to reduce cumulative radiation dosage for emergency patients compared with conventional X-rays. Application of Lodox might be helpful to reduce resource use and simplify care in lower-resourced areas.