Figure 5.

A-B, Minimum intensity projection (MINiP) imaging. Sequential coronal images through the posterior aspect of the lungs show extensive cystic bronchiectasis within the right apex and the entire left lower lobe. With MINiP imaging, only those voxels with the lowest density in any row are projected in two dimensions, effectively eliminating all high-density structures, including most pulmonary vessels. Note that there is also evidence of mosaic lung attenuation identifiable as alternating geographical areas of low-density and higher lung density, indicative of extensive air-trapping in this case due to associated obstructive small airways disease. These changes are seen to especially good advantage using the MINiP technique.