Fig. 4.

Lung segmentation from chest radiographs of hospitalized patients at Michigan Medicine. This figure illustrates the qualitative difference among algorithms and focuses on how they fail in different clinical scenarios, including (a) manifestations of unilateral infiltrate (b) bilateral lung opacities (c) extracorporeal abnormality from an unrelated comorbidity in the abdomen (d) electrocardiographic leads overlying the lung fields (e) a prosthetic device obscuring the outer boundary of the lungs and (f) a prosthetic device interfering with the inner boundary of the lungs