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KMID : 0357520180410020149
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Journal of Radiological Science and Technology
2018 Volume.41 No. 2 p.149 ~ p.155
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Comparison of Images Using Optimized Grid and Images Using Grid Supperession Software in the Diagnosis of Micro Lesions
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Lee Sang-Ho
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Abstract
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Quantitative analysis was performed to confirm that moire artifact was removed without loss of image when using grid suppression software in the diagnosis of micro lesions. we showed that grid suppression images can be morphologically different from original images as they are significantly lower than those of the optimized grid in the similarity analysis with reference images in mammographic phantom images. We were confirmed that images of microcalcification with smaller signal than noise were lost because the pixel values of all lesions increased significantly after the grid suppression, The change in contrast using the NORMI 13 X-ray test phantom was reduced to 30% of the reference image, This result was significantly lower than the 90% when using the optimized grid. In conclusion, the use of grid suppression software in clinical images should be carefully considered because of the possibility of misdiagnosis due to micro lesion loss and morphological changes.
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KEYWORD
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Moire artifact , Quantitative analysis , Grid suppression , Optimized grid , Mammographic phantom
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