Radiomics of Treatment-naive Prostate Cancer Patients on Multiparametric MRI for Risk Stratification and Treatment Outcomes Predictions

Study Overview
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Brief Summary
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Prostate cancers (PCA) are a heterogeneous group which include indolent tumors that has no clinical significance to very aggressive cancer that could result in morbidities and mortality. Thus, an accurate risk stratification at the time of PCA diagnosis is crucial. The histological examination of PCA biopsy specimens could not accurately predict the final tumor aggressiveness shown on radical prostatectomy specimens because of heterogeneous distributions of the most malignant tumor cells. Prostate multiparametric magnetic resonance imaging (mpMRI) has been generally accepted to be the best imaging modality for detecting and localizing prostate cancers themselves. Furthermore, the rapid development of radiomics provide comprehensive quantitative information of all tumor data which could be used for risk stratification and prognosis prediction. Thus, this study plans to enroll 200 eligible patients who undergo prostate mpMRI first, followed by radical prostatectomy for prostate cancers. We use radiomics extracted from prostate mpMRI for risk stratification patients of histological aggressiveness as well as to predict very early recurrence of PCA patients within 6 months after radical prostatectomy.

Detailed Description
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Prostate cancer is the 2nd most common malignancy in the world as well as the leading cancer in male population in Taiwan. The treatment selections of prostate cancer are limited by the uncertainty of its aggressiveness (i.e.: histological graded) and staging before treatment. Although prostate mpMRI has much better ability for detection and localization of prostate cancers than other imaging modalities and diagnostic tests, there is still gap for risk stratifications and treatment selection based on prostate mpMRI findings. Thus, a robust radiomics prediction models based on imaging biomarkers on prostate mpMRI with high prediction accuracy could fill the gap of misclassification of risk stratifications of prostate cancers, guides treatment selections and providing monitoring schedules for treated patients as well as early timely additional treatments (i.e.: target therapy or immunotherapy) for patients with high risk of early recurrence. Furthermore, radiomics could provide consistent information which help in decreasing interobserver and intra-observer variability of interpretating prostate cancer even in the use of PIRADS. In this way, this would save the fee of inappropriate or ineffective treatment and avoid unnecessary time and cost of monitoring low risk patients as well as improve patients' survivals and possibly life-quality as well.

Official Title
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Radiomics of Treatment-naive Prostate Cancer Patients on Multiparametric MRI for Risk Stratification and Treatment Outcomes Predictions

Conditions
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Prostate Cancer

Intervention / Treatment
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* Diagnostic Test: Multiparametric magnetic resonance imaging (mpMRI)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Aged over 20 years old. Suspected or confirmed prostate cancer. Undergoing prostate mpMRI before clinical treatment. Normal renal function(i.e.: estimated GFR ≧60). No allergy history to gadolinium based contrast agent. Agree to participate this study and sign informed consent. Exclusion Criteria: mpMRI photography not completed. mpMRI images are damaged or poor in quality and cannot be interpreted. Without pathological examination confirmed prostate cancer. Patient withdraw informed consent.

Ages Eligible for Study
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Minimum Age: 20 Years

Sexes Eligible for Study
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Male

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Multiparametric magnetic resonance imaging<br>Detecting and localizing prostate cancers. The radiomics provide comprehensive quantitative information of all tumor data which could be used for risk stratification and prognosis prediction. | Diagnostic Test: Multiparametric magnetic resonance imaging (mpMRI)<br>* Detecting and localizing prostate cancers and using radiomics extracted from prostate mpMRI for risk stratification patients of histological aggressiveness as well as to predict very early recurrence of PCA patients within 6 months after radical prostatectomy.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| MR characteristics assessment-T2WI | T2-weighted images (T2WI) | 1.5 year | 
| MR characteristics assessment- DWI | Axial diffusion weighted images (DWI) | 1.5 year | 
| MR characteristics assessment- ADC | Apparent diffusion coefficient maps (ADC) | 1.5 year | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Risk stratification, Prediction, Prostate cancer, Multiparametric MRI, Radiomics, Recurrence