Improving the Quality of Electronic Cleansing of Colorectal CT Images Using a Hybrid Method

  • Hamid Moghaddasi Associate Professor of Health Information Management & Medical Informatics, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences
  • Hossein Beigi Harchegani Department of Health Information technology, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  • Mahtab Shaebani Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  • Hamid Beigy Department of Computer Engineering, Sharif University of Technology, Tehran, Iran
  • Babak SalavatiPour Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Keywords: Electronic Colon Cleansing, CAD, Polypeptide diagnosis, CT Colonography


Introduction: Colorectal cancer, as one of the most important fatal cancers, is caused by the lack of timely diagnosis of colorectal polyps. Presently, because of the advancements in CT imaging of the colorectal device, the CTC-CAD is a promising method for the duly diagnosis of these appendages. In this regard, Electronic Colon Cleansing (ECC) is one of the effective factors that enhance diagnostic accuracy in the methods used in CTC-CAD.

Method: In this study, to implement ECC, the thresholding method, statistical functions, and image processing methods were combined. Then, to evaluate the proposed method, 22 images were randomly selected and ranked by seven radiologists. Regarding the extent of the interpretable, the images taken before and after ECC were collected using MD and LM_ECC methods. The concordance of concordance of all three categories of opinions was calculated based on Kendall’s tau-b correlation coefficient test.

Findings: The value of t-test between the mean score of radiologists' opinions for the main images and the results of the LM_ECC method (p <0.001) is -9.355, while it is -5.414 between the mean score of radiologists for the MD results and the results obtained from the LM_ECC method (p <0.001).

Conclusion: Based on the coefficient of concordance, it is found that there is a high agreement between the ranked opinions of the radiologists, based on which the results of the T-tests show the significant effect of the LM_ECC method on electronic cleansing compared to the main images and the results of MD method.  


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