Table 2.

Coding framework for think-aloud protocols

Category	Code
Perception
Knowledge about anatomy	1.1
Knowledge of radiological imaging techniques	1.2
Knowledge about pathology/epidemiology	1.3
Using efficient search strategies	1.4
Image manipulations (scrolling, viewing directions, window settings)	1.5
Discriminating normal from abnormal findings	1.6
Pattern recognition	1.7
Analysis
Knowledge about anatomy	2.1
Knowledge of radiological imaging techniques	2.2
Knowledge about pathology/epidemiology	2.3
Characterizing findings	2.4
Image manipulations (scrolling, viewing directions, window settings)	2.5
Distinguishing relevant from irrelevant findings	2.6
Comparing with previous images of the patient	2.7
Synthesis
Knowledge about anatomy	3.1
Knowledge of radiological imaging techniques	3.2
Knowledge about pathology/epidemiology	3.3
Integrating radiological findings	3.4
Image manipulations (scrolling, viewing directions, window settings)	3.5
Generating a (differential) diagnosis	3.6
Deciding about advice or action	3.7
Information retrieval	3.8
Other	4

Adapted from: “Interpretation of radiological images: towards a framework of knowledge and skills” by Van der Gijp et al. (2014), Advances in Health Science Education. Copyright (2014) by Advances of Health Education