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MRI in Prostate Cancer Screening: A Review and Recommendations, From the AJR Special Series on Screening.

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Summary

Magnetic resonance imaging (MRI) improves prostate cancer (PCa) screening by better identifying significant cancers and reducing unnecessary biopsies. A sequential MRI approach after PSA testing offers a balanced and scalable strategy for optimizing PCa detection.

Keywords:
diagnosisimage-guided biopsymultiparametric MRIprostatic neoplasmsscreening

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Area of Science:

  • Radiology
  • Oncology
  • Medical Imaging

Background:

  • Traditional prostate cancer (PCa) screening using Prostate-Specific Antigen (PSA) has limitations, including overdiagnosis of indolent cancers and unnecessary biopsies, despite reducing mortality.
  • Magnetic Resonance Imaging (MRI) integration enhances risk stratification for men suspected of PCa, enabling more accurate diagnosis and targeted biopsies.

Purpose of the Study:

  • To analyze the role of MRI in prostate cancer screening and its impact on the benefit-to-harm ratio.
  • To evaluate different MRI-based screening strategies and provide recommendations for optimizing their use.

Main Methods:

  • Assessment of MRI's impact on screening using ratios of clinically significant cancers detected, indolent cancers detected, unproductive biopsies, and avoided biopsies.
  • Comparison of sequential MRI after PSA testing versus MRI alone screening strategies.

Main Results:

  • MRI inclusion in screening algorithms improves risk stratification and enables targeted biopsies, addressing limitations of PSA-only screening.
  • The sequential MRI strategy (PSA testing followed by MRI) is identified as a balanced and scalable approach for PCa screening.

Conclusions:

  • Optimizing MRI use in PCa screening requires individualized risk assessments, tailored protocols, and robust quality assurance.
  • Radiologists' engagement in refining protocols, standardizing interpretations, and adopting new technologies is crucial for maximizing benefits and minimizing harms in MRI-based PCa screening.