A Normalized Metal Artifact Reduction Method Using an Artifact-Reduced Prior for Dental Computed Tomography
| العنوان: | A Normalized Metal Artifact Reduction Method Using an Artifact-Reduced Prior for Dental Computed Tomography |
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| المؤلفون: | Soyoung Park, Guna Kim, Hyosung Cho, Younghwan Lim, Woosung Kim, Jeongeun Park, Chulkyu Park, Seokyoon Kang, Hyunwoo Lim, Dongyeon Lee, Kyuseok Kim, Hunwoo Lee, Duhee Jeon, Changwoo Seo |
| المصدر: | Journal of the Korean Physical Society. 74:298-304 |
| بيانات النشر: | Korean Physical Society, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | 010302 applied physics, Normalization (statistics), medicine.diagnostic_test, business.industry, Attenuation, Streak, General Physics and Astronomy, Computed tomography, Pattern recognition, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Imaging phantom, Metal Artifact, 0103 physical sciences, medicine, Discrete cosine transform, Segmentation, Artificial intelligence, 0210 nano-technology, business |
| الوصف: | In dental computed tomography (DCT), metal artifact reduction (MAR) is a critical issue to improve the clinical usefulness of DCT and remains a challenging problem. Although various MAR methods have been developed in medical CT, those methods may not work robustly in DCT because teeth themselves, as well as metallic objects, have high X-ray attenuation. In this study, we investigated an MAR method that was based on sinogram normalization interpolation with an artifact-reduced prior for DCT. The method consisted of three main steps: segmentation of a metal trace, generation of an artifact-reduced prior image, and sinogram completion followed by DCT reconstruction. We performed a computational simulation and performed an experiment on a teeth phantom with several metal inserts to validate the proposed method. With respect to the root-mean-square error and the structural similarity, we compared our results with the ones obtained by using the combined prior-based MAR (CP-MAR) method. Our results indicate that the proposed MAR method reduced metal artifacts considerably in DCT images and showed an image performance that was better than that obtained by using the state of the art method (CP-MAR) in reducing streak artifacts without introducing any contrast anomaly. |
| تدمد: | 1976-8524 0374-4884 |
| DOI: | 10.3938/jkps.74.298 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::5c9ad4fcf5b7bb0ffe658cf370d8fef9 https://doi.org/10.3938/jkps.74.298 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........5c9ad4fcf5b7bb0ffe658cf370d8fef9 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19768524 03744884 |
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| DOI: | 10.3938/jkps.74.298 |