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Figure 1 | Respiratory Research

Figure 1

From: Quantification of lung surface area using computed tomography

Figure 1

Matching CT Images and Lung Specimens. A CT image of a representative subject is shown in Figure 1A and the corresponding slice of the resected specimen is shown in Figure 1B. For reference and orientation, the tumor is marked by a star ( * ). A grid is superimposed over the fixed lung slice (Figure 1B) and a 2 Ă— 2 cm square section (square E) is randomly selected for histological processing and measurement of surface area per unit lung volume (SA/V). The corresponding region (square E) on CT is then identified (Figure 1A); the CT median lung density and the CT cluster analysis value D are obtained in the region of interest using the computer program (EmphylxJ). The size of the square E on CT has been corrected for lung inflation to match the size of the histological specimen.

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