Figure 3From: The development and evaluation of a computerized diagnosis scheme for pneumoconiosis on digital chest radiographs The subdivision of lung fields. The left and right lung are divided into six lung regions marked (a) to (f). Lung region (a-c) correspond to upper, middle and lower lung field of the right lung, and region (d-f) correspond to upper, middle and lower lung field of the left lung, respectively.Back to article page