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- W4220655225 abstract "Automated detection of aggressive prostate cancer on Magnetic Resonance Imaging (MRI) can help guide targeted biopsies and reduce unnecessary invasive biopsies. However, automated methods of prostate cancer detection often have a sensitivity-specificity trade-off (high sensitivity with low specificity or vice-versa), making them unsuitable for clinical use. Here, we study the utility of integrating prior information about the zonal distribution of prostate cancers with a radiology-pathology fusion model in reliably identifying aggressive and indolent prostate cancers on MRI. Our approach has two steps: 1) training a radiology-pathology fusion model that learns pathomic MRI biomarkers (MRI features correlated with pathology features) and uses them to selectively identify aggressive and indolent cancers, and 2) post-processing the predictions using zonal priors in a novel optimized Bayes’ decision framework. We compare this approach with other approaches that incorporate zonal priors during training. We use a cohort of 74 radical prostatectomy patients as our training set, and two cohorts of 30 radical prostatectomy patients and 53 biopsy patients as our test sets. Our rad-path-zonal fusion-approach achieves cancer lesion-level sensitivities of 0.77±0.29 and 0.79±0.38, and specificities of 0.79±0.23 and 0.62±0.27 on the two test sets respectively, compared to baseline sensitivities of 0.91±0.27 and 0.94±0.21 and specificities of 0.39±0.33 and 0.14±0.19, verifying its utility in achieving balance between sensitivity and specificity of lesion detection." @default.
- W4220655225 created "2022-04-03" @default.
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- W4220655225 date "2022-04-04" @default.
- W4220655225 modified "2023-09-25" @default.
- W4220655225 title "Integrating zonal priors and pathomic MRI biomarkers for improved aggressive prostate cancer detection on MRI" @default.
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- W4220655225 doi "https://doi.org/10.1117/12.2612433" @default.
- W4220655225 hasPublicationYear "2022" @default.
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