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Zhong QZ, Long LH, Liu A, Li CM, Xiu X, Hou XY, Wu QH, Gao H, Xu YG, Zhao T, Wang D, Lin HL, Sha XY, Wang WH, Chen M, Li GF. Radiomics of Multiparametric MRI to Predict Biochemical Recurrence of Localized Prostate Cancer After Radiation Therapy. Front Oncol 2020; 10:731. [PMID: 32477949 PMCID: PMC7235325 DOI: 10.3389/fonc.2020.00731] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 04/16/2020] [Indexed: 12/12/2022] Open
Abstract
Background: To identify multiparametric magnetic resonance imaging (mp-MRI)-based radiomics features as prognostic factors in patients with localized prostate cancer after radiotherapy. Methods:From 2011 to 2016, a total of 91 consecutive patients with T1-4N0M0 prostate cancer were identified and divided into two cohorts for an adaptive boosting (Adaboost) model (training cohort: n = 73; test cohort: n = 18). All patients were treated with neoadjuvant endocrine therapy followed by radiotherapy. The optimal feature set, identified through an Inception-Resnet v2 network, consisted of a combination of T1, T2, and diffusion-weighted imaging (DWI) MR series. Through a Wilcoxon sign rank test, a total of 45 distinct signatures were extracted from 1,536 radiomics features and used in our Adaboost model. Results:Among 91 patients, 29 (32%) were classified as biochemical recurrence (BCR) and 62 (68%) as non-BCR. Once trained, the model demonstrated a predictive classification accuracy of 50.0 and 86.1% respectively for BCR and non-BCR groups on our test samples. The overall classification accuracy of the test cohort was 74.1%. The highest classification accuracy was 77.8% between three-fold cross-validation. The areas under the curve (AUC) of receiver operating characteristic curve (ROC) indices for the training and test cohorts were 0.99 and 0.73, respectively. Conclusion:The potential of multiparametric MRI-based radiomics to predict the BCR of localized prostate cancer patients was demonstrated in this manuscript. This analysis provided additional prognostic factors based on routine MR images and holds the potential to contribute to precision medicine and inform treatment management.
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Affiliation(s)
- Qiu-Zi Zhong
- Department of Radiation Oncology, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - Liu-Hua Long
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education / Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, China
| | - An Liu
- Department of Radiation Oncology, City of Hope Medical Center, Duarte, CA, United States
| | - Chun-Mei Li
- Department of Radiology, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Xia Xiu
- Department of Radiation Oncology, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - Xiu-Yu Hou
- Department of Radiation Oncology, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - Qin-Hong Wu
- Department of Radiation Oncology, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - Hong Gao
- Department of Radiation Oncology, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - Yong-Gang Xu
- Department of Radiation Oncology, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - Ting Zhao
- Department of Radiation Oncology, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - Dan Wang
- Department of Radiation Oncology, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - Hai-Lei Lin
- Department of Radiation Oncology, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - Xiang-Yan Sha
- Department of Radiation Oncology, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - Wei-Hu Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education / Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, China
| | - Min Chen
- Department of Radiology, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Gao-Feng Li
- Department of Radiation Oncology, National Center of Gerontology, Beijing Hospital, Beijing, China
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