"Crazy Paving" is a radiographic term used to describe ground glass opacities with overlying thickening of the interlobular and intralobular septa. The ddx for this is broad, though the most common causes are:
-Acute interstitial pneumonia
-Pulmonary alveolar proteinosis
Pulmonary Alveolar Proteinosis is often either from autoimmune (can consider treating with GS-CSF) or secondary causes (largely exposures, i.e. silica, cement). Pulmonary lavage by rinsing the alveoli with saline is a mainstay in therapy.
A bit of cost-conscious care... The national average prices:
Chest X-Ray: $370
Chest CT: $1900