PI-RADS v2.1: What has changed and how to report

Area of Science:

• Radiology
• Oncology
• Medical Imaging

Background:

• Multiparametric MRI (mpMRI) is crucial for prostate cancer risk stratification.
• Recent updates to the Prostate Imaging-Reporting and Data System (PI-RADS) version 2.1 necessitate revised understanding.

Purpose of the Study:

• To detail the changes in PI-RADS version 2.1.
• To provide a simplified approach for interpreting and reporting prostate MRI.
• To address practical challenges in daily radiological practice.

Main Methods:

• Review of updated PI-RADS version 2.1 guidelines.
• Description of recommended imaging protocols and techniques for prostate MRI.
• Utilization of tables, diagrams, and images for lesion interpretation.

Main Results:

• PI-RADS 2.1 offers updated protocols and a simplified interpretation framework.
• The guide facilitates stratification of lesions across prostate anatomical zones.
• Addresses common interpretation and reporting challenges.

Conclusions:

• The updated PI-RADS 2.1 provides a standardized approach to prostate MRI.
• This resource aims to enhance the accuracy and efficiency of prostate cancer risk assessment.
• Facilitates better clinical decision-making in daily practice.