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Updated: Aug 9, 2025

A Cognitive Fusion-guided Prostate Biopsy Using Multiparametric Magnetic Resonance Imaging and Transrectal Ultrasound
Published on: March 21, 2025
[Prostate Imaging Reporting and Data System (PI-RADS) v 2.1: Overview and Critical Points]
The Prostate Imaging Reporting and Data System version 2.1 (PI-RADS v2.1) updates multiparametric MRI criteria for prostate cancer evaluation. While improved, this review highlights remaining challenges and new issues needing further research and clarification.
Area of Science:
- Radiology
- Oncology
- Medical Imaging
Context:
- The Prostate Imaging Reporting and Data System version 2 (PI-RADS v2) provides standardized criteria for prostate cancer detection using multiparametric MRI (mpMRI).
- PI-RADS v2.1 represents an update to these guidelines, aiming to refine prostate cancer evaluation.
- Despite updates, certain aspects of PI-RADS v2.1 require further investigation and clarification.
Purpose:
- To provide an overview of the updated PI-RADS v2.1 guidelines.
- To critically discuss the strengths and limitations of PI-RADS v2.1 in prostate cancer assessment.
- To identify areas requiring further research and protocol refinement.
Summary:
- PI-RADS v2.1 updates technical parameters and interpretation criteria for mpMRI in prostate cancer evaluation.
- Key discussion points include the need for detailed mpMRI protocols, validation of transition zone criteria, and clarification of diffusion-weighted and dynamic contrast-enhanced imaging criteria.
- Further considerations involve anterior fibromuscular stroma and central zone assessment, background signal, tumor aggressiveness, structured reporting changes, quality control parameters, and expanded indications.
Impact:
- This review aims to guide clinicians and researchers in the optimal application of PI-RADS v2.1.
- Addressing the identified issues can lead to more accurate and reliable prostate cancer detection and characterization.
- Further research and standardization will enhance the utility of mpMRI in prostate cancer management.
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