Ground glass


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ground glass

[¦grau̇nd ′glas]
(optics)
A sheet of matte-surfaced glass on the back of a view camera or process camera so that the image of the subject can be focused on it; it is exactly in the film plane.

Ground glass

Glass whose surface has been roughened with an abrasive, diffusing the light passing through it; produced by sand blasting or etching with acid.

ground glass

Glass having a surface that has been roughened, usually by sandblasting or by acid, to make it nontransparent.
References in periodicals archive ?
There was a significant correlation between the serum HO-1 and the serum surfactant protein- (SP-) D and the ground glass opacity (GGO) score; however, there was no significant correlation of serum HO-1 with serum KL-6 or with the honeycomb score both in all enrolled patients (a, b) and IPF patients (c, d).
In conclusion, TSC presented as MMPH is a rare disease, and further examinations should be performed when multiple ground glass nodules were found in chest CT scan.
Sarcoidosis: The presence of mediastinal lymphadenopathy, nodular opacities and micronodules along bronchovascular bundles, central bronchovascular thickening and nodularity, confluent nodular opacities with air bronchograms, ground glass opacities, crowding and central retraction of bronchi and vessels near the hilae, and pleural or subpleural nodules.13
Caption: Figure 3: CT chest showing bilateral ground glass opacities consistent with congestive heart failure (case 2).
Here, we report a case of PCP with an unusual radiographic appearance consisting of nodular opacities without ground glass on chest CT.
In our series, consolidations were seen in lungs of 5 patients with associated branching nodular opacities and small cavities (Figure.7), which is a classical finding of pulmonary tuberculosis.In two cases,there were periconsolidation ground glass halos which strongly represented invasive aspergillosis.
Chest HRCT showed a significant increment of fibrotic pulmonary changes, in particular intralobular ground glass, reticular abnormalities and the increased extent of honeycombing areas (Photo 2b).
This abnormal bone commonly has the appearance of ground glass on radiographs.
A spokesman said: "According to the World Health Organisation, a tenth of all cigarettes consumed worldwide are illegal, while illicit tobacco has been found to contain asbestos, ground glass, rat and mouse droppings, dead insects, floor sweepings, dust and hay.
On HRCT imaging, RB is usually characterized by bronchial wall thickening and poorly defined ground glass centrilobular nodules, and sometimes by more extensive ground glass opacities, which are typically upper zonal and midzonal.
According to the company, it provides superior optics due to its exclusive integrated optical design featuring 12molded glass lenses compared with 32-56 expensive ground glass lenses typically used in reusable arthroscopes.
For use with reactions, the inlet to the bulb is connected to a ground glass joint, while the outlet is vented to the air.