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IIT Guwahati develops new method to detect colorectal cancer

The most commonly used technique to detect colorectal cancer is colonoscopy, in which the specialist physician, gastroenterologist, or oncologist visually inspects the image obtained by the camera inserted into the colon of the subject.

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Guwahati: The researchers at premier institute from the Indian Institute of Technology (IIT) Guwahati have developed an automated Artificial Intelligence (AI)-based system to detect colorectal cancer using colonoscopy images.

The most commonly used technique to detect colorectal cancer is colonoscopy, in which the specialist physician, gastroenterologist, or oncologist visually inspects the image obtained by the camera inserted into the colon of the subject.

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“We have developed an innovative automated system that can help the physician rapidly and accurately detect colorectal cancer from colonoscopy images,” said researcher Manas Kamal Bhuyan, professor at IIT Guwahati.

Colorectal cancer is the third most common type of cancer among men and women in India, but if detected early it can be cured.

In the current manual approach for colonoscopy examination by physicians, observation bias may sometimes lead to an erroneous diagnosis, the researchers said.

For the study, published in the journal Scientific Reports, scientists from Cotton University, Guwahati, Harvard University, the University of Texas and Aichi Medical University, Japan collaborated with the IIT Guwahati professor.

During the visual examination, specialists check for the presence and features of abnormal tissue growths (polyps) including shape, surface structure and contour to classify them into different categories (neoplastic and non-neoplastic).

The multi-institutional team of researchers extracted the shape, texture and colour components through AI algorithms using different filters.

The statistical significance in the contribution of different components was then evaluated, followed by feature selection, classifier selection based on six measures and cross-validation.

The researchers said they are excited with their results and believe that their work would have a global impact in the detection of colorectal cancer.

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