[Application of T grain technique to the diagnosis of lung disease and analysis of its image quality].
Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi
; 21(3): 206-8, 2003 Jun.
Article
en Zh
| MEDLINE
| ID: mdl-14761490
ABSTRACT
OBJECTIVE:
To compare the image quality of T grain green sensitive film (TML-1) and Lanex Gd(2)O(2)S rare earth intensifying screen with that of XK-1 blue sensitive film and calcium tungstate (CaWO(4)) intensifying screen, and to study the application of T grain technic to the diagnosis of lung diseases.METHODS:
160 coal miners were randomly selected to take both TML-1 and XK-1 chest film of high kV radiographs at the same time. Silver halide granule, fluorescence of intensifying screen, radiographic parameters, the density at different points in the lung and chest radiographs were observed.RESULTS:
Silver grains in TML-1 film were more homogeneous in distribution than in XK-1 film. Luminous intensity of Lanex Gd(2)O(2)S rare earth intensifying screen was brighter than CaWO(4) intensifying screen in the same exposure. The exposure doses of TML-1 film was reduced to one third of XK-1 film. The density of chest radiographs was 0.24 to 2.74 in TML-1 film, and 0.30 to 2.60 in XK-1 film. There were greater exposure latitude and more informations in TML-1 film. By apertured-disc observation, the fine structure of lung in TML-1 film was clearer than in XK-1 film, the shape was more concrete and reliable, visualizability was stronger.CONCLUSION:
T grain technique may obviously improve the clearness and resolution of image, and enhance the transmission of information, as well as increase the diagnostic informations.
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Banco de datos:
MEDLINE
Asunto principal:
Diagnóstico por Imagen
/
Enfermedades Pulmonares
Tipo de estudio:
Diagnostic_studies
Límite:
Adolescent
/
Adult
/
Child
/
Humans
/
Male
Idioma:
Zh
Año:
2003
Tipo del documento:
Article