Grating-based x-ray dark-field CT for lung cancer diagnosis in mice

European Radiology Experimental

Table 2 Detectability index of attenuation and dark-field modality of lung nodules

Group	Imaging modality	Nodules		Normal pulmonary parenchyma		Detectability index
Group	Imaging modality	Mean	SD	Mean	SD	Detectability index
Day 8	Attenuation	0.517	0.039	0.500	0.039	0.436
Day 8	Dark-field	2.421	0.681	6.512	1.271	4.012
Day 12	Attenuation	0.434	0.044	0.311	0.028	3.335
Day 12	Dark-field	4.089	0.925	7.222	0.951	3.340
Day 16	Attenuation	0.558	0.030	0.368	0.061	3.953
Day 16	Dark-field	0.691	0.617	7.074	1.132	7.002