Skip to main content
Figure 3 | BMC Medical Imaging

Figure 3

From: Determination of regional lung air volume distribution at mid-tidal breathing from computed tomography: a retrospective study of normal variability and reproducibility

Figure 3

Schematic diagram illustrating the radial transform method of elastic registration of the images. The subject’s image of fractional air volume concentration (FAVC) is transformed to the template shape by finding for each voxel in the template shape Vt. the corresponding voxel in the subject shape Vs. This is based on the direction cosines and the fractional radial distance of Vt relative to the centre of the transform Ot. The voxel in the template shape, Vt, is then filled with the FAVC value at Vs.

Back to article page

BMC Medical Imaging

ISSN: 1471-2342

Contact us