Abstract
Objective. To evaluate the influence of x-ray tube current and voltage on the localization of the alveolar duct by linear tomography. Material and Methods. The sample consisted of 24 hemi-mandibles that were scanned by linear tomography equipment using different combinations of Kv and mA. The images obtained were processed using ImagJ software, obtaining coronal slices of the images, which were then observed by five observers. Diagnostic accuracy was compared by the area under the curve (Az) through ROC curves (receiver operating characteristic curve), using ROCKIT 1.1B software. The intra- and inter-observer Kappa index was 0.79 and 0.71, respectively. Results. Using low values of Kv (60 Kv), higher Az (0.912) was achieved. When mA was varied, the highest Az value was for 2 mA (0.911). Conclusion. It is recommended to use low values of RX tube current and voltage.
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