| Autor: |
Mehrdad Panjnoush, Yasaman Kheirandish, Pooneh Mohseni Kashani, Hoorieh Bashizadeh Fakhar, Farzan Younesi, Maysa Mallahi |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Předmět: |
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| Zdroj: |
Frontiers in Dentistry, Vol 13, Iss 3 (2016) |
| Druh dokumentu: |
article |
| ISSN: |
2676-296X |
| Popis: |
Objectives: The aim of this study was to assess the effect of tube current, kilovoltage peak (kVp), metal type, and the position of metal objects on metal artifacts in cone-beam computed tomography (CBCT) images. Materials and Methods: Titanium and cobalt-chromium rods were fabricated and placed in a dry human mandible. Samples were scanned using a Promax 3D CBCT unit with different milli-amperages and kVp. The artifacts induced by metal objects were evaluated using the Image J software in four regions of interest (ROIs) on each image. Results: A higher kVp decreased artifacts of the buccal surface of the rods in 97% of the cases (P=0.046) but did not affect the severity of artifacts between the two metal objects (P>0.05). Increasing the tube current had no effect on metal artifacts in 93% of the cases (P>0.05). Artifacts induced by a cobalt-chromium alloy were more severe than those with titanium (P |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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