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AI-Assisted Prostate Cancer Diagnosis

Prostate cancer is the second most prevalent cancer in men, affecting about 1 in 8 men during their lifetime. Often, patients will have an MRI scan as part of regular screening. MRI images identify regions and details such as the prostate boundary, zones and tumors, which radiologists use to calculate the Prostate Imaging Reporting and Data System (PI-RADS) score. The PI-RADS score ranges from 1 to 5 (low to high probability of clinically significant cancer) and provides the basis for diagnosis and treatment. Patients with a PI-RADS score of 3 or more usually undergo a prostate biopsy to detect suspected cancer.

AI-Assisted Prostate cancer diagnosis

Calculation of the PI-RADS score may be influenced by external factors such as experience, training or fatigue of the radiologist, which introduces variability into the process. Artificial Intelligence has the potential to serve as a valuable aid in accurately and robustly calculating the PI-RADS score, as AI algorithms output numerical values, which increase diagnosis objectivity and repeatability. For example, gradients and color distributions can be quantified to analyze the tumor and determine the homogeneity of the tissue. The data obtained from AI algorithms assists physicians in calculating the PI-RADS score, leading to a more appropriate course of action. These advances in determining crucial details such as the size, location and state of the cancer allow physicians to choose the most suitable treatment for the patient.

MRI-generated images of the prostate and surrounding tissue may be used by physicians to improve biopsies. During a biopsy, the prostate is sampled using a needle that is guided by ultrasound to provide real-time images of the tissue. Detailed MRI scans can be registered with live ultrasound to improve the accuracy of the biopsy and target abnormal tissue. Advanced AI algorithms are being trained to compensate for differences between the ultrasound and MRI images to enhance registration, and thus improve guidance to tumors. In addition, probe tracking provides 3D anatomical information to enhance navigation.

At RSIP Vision, we work closely with physicians to improve the prognosis of patients with prostate cancer. Physicians define the ground rules to detect and segment lesions, boundaries, and zones of the prostate. We incorporate these with computer vision and deep learning techniques to provide tools that help radiologists calculate the PI-RADS score in a more objective way and improve guidance during prostate biopsies.

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Urology

Urology is one of the many medical fields that are being revolutionized by Artificial Intelligence. Prostate, bladder, urethra, kidneys and more key organs are already benefitting from impressive breakthroughs brought about by new technologies. AI is now able to contribute to more accurate and faster detection, segmentation, classification and diagnose for many urology disfunctions and diseases, including cancer, BPH and urolithiasis. Thanks to the latest generation of AI and computer vision techniques (deep learning in particular), AI provides now a precious support to the medical team in the operating room as well as during all stages of treatment, drastically improving the quality of therapy and reducing recovery time. You can find below some of RSIP Vision's projects and pioneering research in the field of AI for urology.

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  • blog, Medical segmentation, RSIP Vision Learns, Surgical, Urology

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