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- W4385547897 abstract "76 Background: mpMRI-derived radiomic features have been shown to capture sub-visual patterns for quantitative characterization of tumor phenotype. We seek to compare the diagnostic performance of a mpMRI-based radiomic model to currently available nomograms for prediction of post-radical prostatectomy (RP) biochemical recurrence (BCR). Methods: mpMRI was obtained from 76 patients who had underwent RP for treatment of localized PCa. All patients had ≥2 years follow-up and those with neo-adjuvant or adjuvant treatment were excluded. Radiomic analysis and cross-validation of mpMRI features yielded features significantly correlated with BCR, defined as two consecutive serum PSA≥0.2ng/ml. These features were aggregated to construct a radiomic model, which was compared to the risk scores generated by inputting patients’ clinicodemographic features into the USCF Cancer of the Prostate Risk Assessment (UCSF-CAPRA) score and Memorial Sloan Kettering Cancer Center (MSKCC) Pre-Radical Prostatectomy nomogram. The performance of each model was compared utilizing receiver-operator curve (ROC) analysis and area under the curve (AUC) was reported. Results: In feature extraction and ranking, six radiomic features were determined to be important and non-redundant in predicting PCa recurrence (least material condition, gray-level non-uniformity, shape-elongation, shape-sphericity, first-order skewness). These features were aggregated into the radiomic model and repeated five-fold cross validation yielded a model with AUC of 0.95±0.06, 33% sensitivity, and 100% specificity. UCSF-CAPRA and MSKCC nomograms yielded AUC of 0.72±0.07 and 0.82±0.07, respectively. Conclusions: The mpMRI-derived radiomic model performed well when compared to the UCSF-CAPRA score and MSKCC Pre-Radical Prostatectomy nomogram. Future projects will incorporate patient demographics and disease characteristics available at the time of initial PCa diagnosis to improve the radiomic model accuracy." @default.
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- W4385547897 date "2023-08-01" @default.
- W4385547897 modified "2023-09-23" @default.
- W4385547897 title "Diagnostic performance of a novel radiomic model for predicting post-treatment prostate cancer recurrence: A comparison to CAPRA and MSKCC nomograms." @default.
- W4385547897 doi "https://doi.org/10.1200/go.2023.9.supplement_1.76" @default.
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