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Shim, Jina, Yoon, Myonggeun, Lee, Youngjin. (1401). Application of Fast Non-Local Denoising Approach in Digital Radiography Using Lung Nodule Phantom for Radiation Dose Reduction. , 19(6), 363-370. doi: 10.22038/ijmp.2022.60000.2009
Jina Shim; Myonggeun Yoon; Youngjin Lee. "Application of Fast Non-Local Denoising Approach in Digital Radiography Using Lung Nodule Phantom for Radiation Dose Reduction". , 19, 6, 1401, 363-370. doi: 10.22038/ijmp.2022.60000.2009
Shim, Jina, Yoon, Myonggeun, Lee, Youngjin. (1401). 'Application of Fast Non-Local Denoising Approach in Digital Radiography Using Lung Nodule Phantom for Radiation Dose Reduction', , 19(6), pp. 363-370. doi: 10.22038/ijmp.2022.60000.2009
Shim, Jina, Yoon, Myonggeun, Lee, Youngjin. Application of Fast Non-Local Denoising Approach in Digital Radiography Using Lung Nodule Phantom for Radiation Dose Reduction. , 1401; 19(6): 363-370. doi: 10.22038/ijmp.2022.60000.2009

Application of Fast Non-Local Denoising Approach in Digital Radiography Using Lung Nodule Phantom for Radiation Dose Reduction

Iranian Journal of Medical Physics
مقاله 6، دوره 19، شماره 6، بهمن و اسفند 2022، صفحه 363-370    اصل مقاله (1.76 M)
نوع مقاله: Original Paper
شناسه دیجیتال (DOI): 10.22038/ijmp.2022.60000.2009
نویسندگان
Jina Shim1؛ Myonggeun Yoon2؛ Youngjin Lee* 3
1Department of Diagnostic Radiology, Severance Hospital, Seoul, Republic of Korea
2Department of Bio-Convergence Engineering, Korea University, Seoul, Republic of Korea
3Department of Radiological Science, Gachon University, Incheon, Republic of Korea
چکیده
Introduction: Chest X-ray imaging has become the most commonly used, as it is the primary method for lung cancer screening during medical check-ups.  The radiation dose should be minimized to ensure that the patients are not overexposed to radiation. However, radiation dose reduction results in increased noise in the chest X-ray image. Thus, the purpose of this study was to evaluate the utility of fast non-local means (FNLM) filters to reduce radiation dose while maintaining sufficient image quality.
Material and Methods: This study evaluates three filters (median, Wiener, and total variation) and a newly proposed filter (fast non-local means (FNLM)), which reduce image noise. A realistic anthropomorphic phantom is used to compare images acquired depending on positions such as anterior-posterior, lateral, and posterior-anterior, using a self-produced 3D printed lung nodule phantom. To evaluate image quality, we used the normalized noise power spectrum (NNPS), contrast to noise ratio (CNR), and coefficient of variation (COV) evaluation parameters.
Results: The NNPS and COV were lowest and the CNR was highest with FNLM images. FNLM filter outperforms other compared filters in terms of noise reduction.
Conclusion: Therefore, the use of an FNLM filter is recommended, because it reduces the radiation dose to a patient and thus minimizes the risk of cancer, while maintaining diagnostic quality.
کلیدواژه‌ها
Digital Radiography X؛ Ray Image Denoising Fast Non؛ Local Means (FNLM) Approach 3D Printing Quantitative Evaluation of Image Quality
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