Sensitivity and specificity.

<p>Individual sensitivities and specificities for the detection of IPA in chest radiographs without and with BSI, based on marking with a suspiciousness score above 50. * Δ = difference.</p><p>Sensitivity and specificity.</p

Bedside radiograph of a 58 year old female with neutropenic fever.

<p>Without BSI, 3 of the 7 observers called the radiograph suspicious, which increased to 7 observers with BSI. Original radiograph (A), bone suppressed image (B), coronal CT slice (C).</p

Number of, on average, detected cases per subtlety category.

<p>Number of, on average, detected cases per subtlety category.</p

Example of a moderately subtle case of a 35 year old female with multiple focal lesions in the right lung.

<p>Without BSI 6 of the 7 observers marked this case with an average suspiciousness score of 63. With BSI all observers marked the case with an average suspiciousness score of 91. Original radiograph (A), bone suppressed image (B), coronal CT slice (C).</p

Upright radiograph with a very subtle lesion in the left lower lobe.

<p>Without BSI only one observer marked the small lesion. With BSI all 7 observers marked the lesion with an average suspiciousness score of 55. Original radiograph (A), bone suppressed image (B), coronal CT slice (C).</p

Subtlety categories.

<p>Number of cases classified into the different subtlety categories.</p><p>Subtlety categories.</p

Patient demographics.

<p>Age, gender, average time between the chest radiograph and the CT in days, and projection type are displayed for the diseased and normal cases. n  =  number.</p><p>Patient demographics.</p

Observer performance.

<p>Average area under the ROC curves (AUC) for all observers. AUCs are displayed for all images and for analysis of the different groups of projection type (bedside and upright).</p><p>Observer performance.</p