Evaluating the Reliability of Different Radiodensitometric Softwares by Calibration with Cone-Beam Computed Tomography Waleed Suleiman

Background and aim of the study: Nowadays, radiographic bone density measurement softwares became a commonly used techniques in the daily practice. This study aims to evaluate the reliability of four different softwares compared with Cone-beam CT values.
Materials and Methods: A 100 different cross-sectional projections were obtained from 25 patient’s CBCT files. Regions of interests ROIs were alveolar process in the posterior maxillae. Bone densities were measured in the original sections using the CBCT software, the same sections then loaded to obtain the radiographic bone densities from the studied softwares. Pearson’s correlations coefficients “r” were studied between the previous variables and Alpha Cronbach’s test used to evaluate the reliability of these softwares.
Results: The correlations between densities derived from cone-beam CT and density values derived from Digora 1.51 and 2.5 were strong (r=0.697, P=0.000) and (r=0.602, P=0.002) respectively, whereas the maximum “r” value obtained when correlating CBCT values with Idrisi Kilimanjaro software values (r=0.855, P=0.001). The correlation was moderate with other softwares. Alpha Cronbach’s test showed low reliability of these softwares.
Conclusion: Idrisi Kilimanjaro software showed the most validity for radiodensitometric determination. The version 1.51 of Digora seems to be better than version 2.5, whereas Scion Image and Image J showed moderate validity. All studied softwares have low reliability when calibrated with cone-beam CT.
Keywords: Bone, quality, density, cone-beam CT, radiodensitometric softwares.DOC-20190406-WA0001

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