Diagnostic imaging costs before and after digital tomosynthesis implementation in patient management after detection of suspected thoracic lesions on chest radiography

Insights into Imaging

Table 1 Confidence scoring system

Confidence score	Reader finding
1 or 2	Definite or probable
	(1) Benign pulmonary^a or extrapulmonary lesion^b
	(2) Pulmonary pseudolesion^c
3	Indeterminate^d
4 or 5	Probable or definite pulmonary lesion^e

Diagnostic confidence scoring system
^aCentrally calcified pulmonary lesions or pulmonary lesions with gross calcifications or calcified fibrotic scars with pulmonary architectural distortion
^bLesions not contained in the limits of lung parenchyma (e.g. pleura or thoracic wall) with or without calcifications
^cOpacity not due to a true pulmonary or extra-pulmonary lesions but to normal anatomical structures including composite areas of increased opacity due to overlap of vascular and bone structures of the thoracic wall, vascular kinking, anatomic variant, or also to rib fracture, bone island or osteophytes
^dReaders failed to classify confidently the presence of a lesion or whether a lesion was pulmonary or extra-pulmonary or was a pseudolesion
^eA solid pulmonary lesion, a parenchymal or ground-glass opacity, or a solid or subsolid ground-glass pulmonary nodule