Comparison of Detectability of Liquid Crystal Displays (LCDs) and Film Using Phantoms of Small Adenocarcinomas as Abnormalities

Yasuo Mochizuki, Shinji Abe, Masahiko Monma, Kojirou Yamaguchi, Toshiki Adachi
2011 Japanese Journal of Radiological Technology  
Following the trend of the digitalization of the modalities used for diagnostic imaging, the devices for such imaging have increasingly included monitors. The present study was undertaken to evaluate the usefulness of soft-copy (liquid crystal display; LCD) images of phantoms of small adenocarcinomas using receiver operating characteristic (ROC) analysis of two different display systems: LCD and hard copy (film). A twotailed paired t-test and the jackknife method (parametric methods) were
more » ... med, and no significant differences were found in the area under the ROC curve (AUC) for the pulmonary fields, lungs, ribs, or mediastinum between the film and LCD display systems, and the detectability did not differ between the film and LCD monitors. A Mann-Whitney U test, which is a non-parametric method that applies to the analysis of a small sample, also showed no significant differences in the AUC. The results of this study suggest that LCDs can replace hard-copy film as a display system if the signals.
doi:10.6009/jjrt.67.328 pmid:21532242 fatcat:oz6bz6zgando5aj3epwpvlqcfm