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AI system for detecting and diagnosing ulcerative colitis

Thu, 12/16/2021 - 10:38
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Researchers at Tokyo Medical and Dental University (TMDU) have developed an artificial intelligence system for detecting and diagnosing ulcerative colitis using real-time clinical video imaging, reducing the need for expensive and invasive biopsies. The research, ‘Deep neural network for video colonoscopy of ulcerative colitis: a cross-sectional study’, was published in The Lancet Gastroenterology & Hepatology.

When visiting a doctor, many patients prefer non-invasive procedures over invasive and potentially painful ones. Fortunately, researchers at TMDU have developed a tool that can reduce the need for invasive diagnostic procedures in ulcerative colitis.

With an aim to prevent unnecessary biopsies and improve medical diagnoses, researchers at TMDU previously developed a deep neural network system called DNUC to assess ulcerative colitis, a chronic disease occurring in the large intestine characterised by chronic inflammation in the lining of the colon. Without requiring biopsies, this artificial intelligence tool can evaluate images of tissues to identify and quantify areas of inflammation and disease.

In their latest study, the team extended the application of DNUC from still images to live colonoscopy videos of patients with ulcerative colitis. A total of 770 patients were included in the prospective, multi-centre study. The researchers demonstrated that DNUC can determine the presence or absence of inflammation in real time, with a high rate of agreement between the DNUC results and expert diagnoses. DNUC was also able to predict cases of remission with a high level of accuracy.

"We confirmed that DNUC can automatically identify areas of inflammation and provide an endoscopic score for those areas," said study lead author, Dr Kento Takenaka.

The scores obtained by DNUC were compared with scores assigned by an expert and showed a high level of agreement, confirming the accuracy of the DNUC algorithm. This artificial intelligence tool can provide many benefits to the medical field. "

The use of DNUC can reduce the need for biopsies, thus saving time and costs for both patients and doctors," explained Dr Mamoru Watanabe, senior author of the study. The DNUC system also has the potential to evaluate images and video footage more quickly than a physician. Moreover, endoscopy requires training and interpretations of endoscopic results can be subjective, varying for each endoscopist. DNUC can allow for more quantitative standards in evaluations, addressing these current issues regarding variability and bias in medical diagnoses.

This system can be applied to commercially available colonoscopy platforms, thus facilitating its adoption in clinical practice. DNUC could also facilitate the training of junior gastroenterologists. Overall, this work highlights the potential for artificial intelligence to improve current medical care.