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Maxillofacial Plastic and Reconstructive Surgery
Fig. 3 | Maxillofacial Plastic and Reconstructive Surgery

Fig. 3

From: Feasibility analysis of bone density evaluation with Hounsfield unit value after fibula flap reconstruction of jaw defect

Fig. 3

Method of adjusting and selecting ROI diameter. If we chose 5 mm as the diameter of ROI when the actual distance between two adjacent titanium nails was less than 5 mm, then the result might be influenced as ROI involved the metal artifacts. Therefore, the actual distance between two adjacent titanium nails was chosen as the final diameter of ROI in such circumstances. However, if the distance between adjacent titanium nails was more than 5 mm, then 5 mm was selected as the diameter of ROI routinely. ROI, region of interest

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