The study's objectives were to investigate the correlation between pixel values obtained from a cone-beam computed tomographic (CBCT) scanner and the computed tomographic (CT) values from a multidetector row CT scanner and to determine whether they have a linear relationship at various tube voltages and tube currents.A phantom with different concentrations of contrast medium at the center of a multidetector row CT and a CBCT scanner was scanned at various imaging parameters. Computed tomographic values and pixel values were measured using ImageJ. Regression analysis was performed, as well as correlation tests with a Pearson correlation coefficient.A significant correlation between pixel values and the CT values of the same specimen was observed (P < 0.0001), and a linear relationship was found between the values from the 2 scanners at each parameter.A high correlation and linear relationship between the CT values and pixel values were found at each parameter. Therefore, linear functions can be used to convert a pixel value from the CBCT machine used in this study to the CT values.

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imagej regression analysis correlation tube voltages conebeam computed tomographic cbct scanner multidetector row ct scanner value linear functions cbct machine

Jira, Chindasombatjaroen Naoya, Kakimoto Hiroaki, Shimamoto Shumei, Murakami Souhei, Furukawa,.Correlation between pixel values in a cone-beam computed tomographic scanner and the computed tomographic values in a multidetector row computed tomographic scanner.. 35 (5),662-5.

Jira, Chindasombatjaroen Naoya, Kakimoto Hiroaki, Shimamoto Shumei, Murakami Souhei, Furukawa,"Correlation between pixel values in a cone-beam computed tomographic scanner and the computed tomographic values in a multidetector row computed tomographic scanner." 35

Jira, Chindasombatjaroen Naoya, Kakimoto Hiroaki, Shimamoto Shumei, Murakami Souhei, Furukawa,"Correlation between pixel values in a cone-beam computed tomographic scanner and the computed tomographic values in a multidetector row computed tomographic scanner."