[Time needs in evaluating digital thoracic images on the monitor in comparison with alternator].

PURPOSE

Evaluation of time efficiency in softcopy reading versus hardcopy reading of digital chest x-rays.

MATERIAL AND METHODS

130 normal and pathologic chest x-rays in two plains were analyzed by 4 experienced radiologist at both a digital workstation and the light box. Reading time and switch time between two patient folders were measured as well as the frequency of post-processing at the monitor.

RESULTS

Reading time at the workstation slightly exceeded reading time at the light box; differences were not statistically significant. Post-processing (frequency between 2% and 83%) did not significantly prolong reading time. Mean switch time between two patient folders was 4.3 sec at the workstation and 13.7 sec at the light box.

CONCLUSION

As compared to hardcopy reading, softcopy reading of digital chest x-rays does not significantly increase reading time. Switch time between patient folders can be reduced at the workstation by a factor of two to four.