MOSAIC
ATTENUATION
Mosaic perfusion refers to
areas of decreased attenuation which results from regional differences in lung
perfusion secondary to airway disease or pulmonary vascular disease. Distribution
is often patch, hence the designation "mosaic." Often with mosaic perfusion,
the pulmonary arteries will be reduced in size in the lucent lung fields thus
allowing mosaic perfusion to be distinguished from ground-glass opacities.
