The effects of technical factors on the fractal dimension in different dental radiographic images

Authors : Mehmet AMUK, Gamze ŞİRİN SARIBAL, Nihal ERSU, Serkan YILMAZ

Pages : 68-74

Doi:10.26650/eor.2023984422

View : 36 | Download : 73

Publication Date : 2023-05-31

Article Type : Research Paper

Abstract :Purpose The aim of this study was to assess the impact of exposure parameters and image formats on fractal dimension insert ignore into journalissuearticles values(FD); values in periapical, panoramic, and CBCT images. Materials and Methods Seven dry male mandibles were selected, and a Gutta-Percha was used to identify identical regions of interest. A periapical radiograph was taken with 60 kVp/7 mA and exported in DICOM, JPEG, TIFF, and PNG formats. Nine periapical radiographs insert ignore into journalissuearticles values(60, 65, 70 kVp; 4, 5, 6 mA); were taken from seven dry human mandibles. Additionally, 12 panoramic radiographs insert ignore into journalissuearticles values(60, 70, 81, 90 kVp; 5, 8, 13 mA); and 10 CBCT images insert ignore into journalissuearticles values(with different scanning options and FOVs); were taken from each mandible. FDs were measured from a standard area. Results The intra-class correlation coefficient demonstrated a high degree of agreement between observers. No significant difference was found between TIFF and PNG formats insert ignore into journalissuearticles values(p > 0.05);. The highest FD mean was found in TIFF format, while the lowest FD mean was found in JPEG format insert ignore into journalissuearticles values(p < 0.001);. There was no significant difference between kVp and mA settings in periapical images. In panoramic images, a significant difference was found at 90 kVp insert ignore into journalissuearticles values(p = 0.001); and 13 mA insert ignore into journalissuearticles values(p < 0.001);, with lower FD values observed at these settings. There was no significant difference between FOV and resolution in CBCT images insert ignore into journalissuearticles values(p > 0.05);. Conclusion The format of the image can influence FD. For periapical and panoramic radiographs, kVp and mA settings do not have a significant impact on FD. However, fractal analysis may not be an ideal method for evaluating three-dimensional images, such as those obtained with CBCT.
Keywords : Fractal analysis, Exposure parameters, Image format, Dental radiography, CBCT