Article

[Effects of image post-processing parameters on digital radiography chest radiograph for the diagnosis of pneumoconiosis].

Zhejiang Academy of Medical Sciences, Hangzhou 310013, China.
Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases 01/2012; 30(1):3-7. pp.3-7
Source: PubMed

ABSTRACT To explore the effects of image post-processing parameters on DR chest radiograph for the diagnosis of pneumoconiosis.
Eighty three coal miners were examined with high-kV and DR chest radiographs at the same time. Image post-processing parameters (density, contrast and so on) were designed in a Philips Essenta DR machine were designed, then differences of image quality between high-kV and DR chest radiographs were compared.
After regulating image and proceeding the parameters, the OD (optical density) values of high density areas in the upper-middle lung fields, subphrenic and direct exposure areas were 1.58 +/- 0.10, 0.23 +/- 0.02 and 2.80 +/- 0.21, respectively. The quality of chest films met the requirements of diagnostic criteria of pneumoconiosis. The rate of excellent chest films for DR chest radiograph was 95.18%, which was significantly higher than that (80.72%) for high-kV chest radiograph (P < 0.01).
Appropriate parameters of image post-processing can make DR chest radiograph to meet the requirements of chest radiograph quality for the diagnosis of pneumoconiosis.

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Keywords

chest films
 
chest radiograph quality
 
density areas
 
diagnostic criteria
 
direct exposure areas
 
DR chest radiograph
 
DR chest radiographs
 
excellent chest films
 
high-kV chest radiograph
 
image post-processing
 
image post-processing parameters
 
image quality
 
OD
 
optical density
 
Philips Essenta DR machine
 
pneumoconiosis
 
regulating image
 
upper-middle lung fields
 

Jun-Qiang Chen