Measuring Interobserver Disagreement in Rating Diagnostic Characteristics of Pulmonary Nodule Using the Lung Imaging Database Consortium and Image Database Resource Initiative

Disagreements exist across radiologists in rating diagnostic characteristics of pulmonary nodules, and the disagreement levels vary from each other. Agreement among radiologists is improved by combining ratings according to the LIDC/IDRI instruction. For investigators, understanding and appreciating the disagreement level of each diagnostic characteristic is required when using them in related researches.