DIGITAL CHEST RADIOGRAPHY - OPTIMIZING IMAGE-PROCESSING PARAMETERS FOR THE VISIBILITY OF CHEST LESIONS AND ANATOMY

Citation
S. Kheddache et al., DIGITAL CHEST RADIOGRAPHY - OPTIMIZING IMAGE-PROCESSING PARAMETERS FOR THE VISIBILITY OF CHEST LESIONS AND ANATOMY, European journal of radiology, 22(3), 1996, pp. 241-245
Citations number
18
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging
ISSN journal
0720048X
Volume
22
Issue
3
Year of publication
1996
Pages
241 - 245
Database
ISI
SICI code
0720-048X(1996)22:3<241:DCR-OI>2.0.ZU;2-8
Abstract
The effect of varying the degree of contrast and edge enhancement upon the visibility of chest lesions and anatomy was evaluated in a digita l image intensifier system for chest radiography. Visual grading analy sis was used as method for the evaluation. Conventional radiographs se rved as reference images. Ten observers graded the visibility of four regions of interest: (1) fine linear structures, (2) mediastinal anato my, (3) rounded opacities, (4) vessels, and also graded the overall qu ality of 17 chest images. The images had been subjected to three grade s of image processing: one basic, one intermediate, and one extreme. I n all, 2730 observations were made. The basic image processing was the best for the visibility of regions 2, 3, and 4 and for the overall qu ality. The intermediate image processing was best for the fine linear structures. The extreme image processing rated lowest for all regions and especially for the overall quality.