Radio Flashcards
Ground glass X-ray & CT def?
Causes? (4)
Ground glass opacity (GGO) refers to the hazy gray areas that can show up in CT scans or X-rays of the lungs. These gray areas indicate increased density inside the lungs. The term comes from a technique in glassmaking during which the surface of the glass is blasted by sand
It is typically defined as an area of hazy opacification (x-ray) or increased attenuation (CT) due to air displacement by fluid, airway collapse, fibrosis, or a neoplastic process. When a substance other than air fills an area of the lung it increases that area’s density. On both x-ray and CT, this appears more grey or hazy as opposed to the normally dark-appearing lungs. Although it can sometimes be seen in (1)normal lungs, common pathologic causes include (2)infections,(3) interstitial lung disease, and (4)pulmonary edema
