미세병변 진단에서 Optimized Grid을 사용한 영상과 Grid Supperession Software를 사용한 영상의 비교분석

Comparison of Images Using Optimized Grid and Images Using Grid Supperession Software in the Diagnosis of Micro Lesions

Quantitative analysis was performed to confirm that moire artifact was removed without loss of image when us-ing grid suppression software in the diagnosis of micro lesions. we showed that grid suppression images can be morpho-logically 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 sup-pression, 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 sup-pression software in clinical images should be carefully considered because of the possibility of misdiagnosis due to micro lesion loss and morphological changes.