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Abstract #4106

Assessing the variability of contours performed by DL algorithms in prostate MRI

Jeremiah Sanders1, Henry Mok2, Alexander Hanania3, Aradhana Venkatesan4, Chad Tang2, Teresa Bruno2, Howard Thames5, Rajat Kudchadker6, and Steven Frank2
1Imaging Physics, UT MD Anderson Cancer Center, Houston, TX, United States, 2Radiation Oncology, UT MD Anderson Cancer Center, Houston, TX, United States, 3Radiation Oncology, Baylor College of Medicine, Houston, TX, United States, 4Diagnostic Radiology, UT MD Anderson Cancer Center, Houston, TX, United States, 5Biostatistics, UT MD Anderson Cancer Center, Houston, TX, United States, 6Radiation Physics, UT MD Anderson Cancer Center, Houston, TX, United States

Quantitative techniques for characterizing deep learning (DL) algorithms are necessary to inform their clinical application, use, and quality assurance. This work analyzes the performance of DL algorithms for segmentation in prostate MRI at a population level. We performed computational observer studies and spatial entropy mapping for characterizing the variability of DL segmentation algorithms and evaluated them on a clinical MRI task that informs the treatment and management of prostate cancer patients. Specifically, we analyzed the task of prostate and peri-prostatic anatomy segmentation in prostate MRI and compared human and computer observer populations against one another.

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