Isayama, Takaaki Tokushima University
Dose area product (DAP) meter
The purpose of this study is to propose a new method of image evaluation using statistical analysis. We used the Sign test and the Wilcoxon test to analyze the statistical significance of image differences. Using this method, we evaluated whether the small electrode of the DAP meter appears in the X-ray image. Two observed values, which were obtained by averaging all values under all exposure conditions, were compared. All the observation tests showed the same sign. Thus, the results proved that the small electrode of the DAP meter is not present on the image. Using this method, it became possible to prove that the electrode was not depicted, which was impossible to determine using conventional methods. The method combining both the Sign test and the Wilcoxon test can be useful in image evaluation.
Radiological Physics and Technology
Japanese Society of Radiological Technology|Japan Society of Medical Physics|Springer Singapore
The final publication is available at link.springer.com.
rpt_12_2_156.pdf 757 KB