Image-guided prostate biopsy using magnetic resonance imaging-derived targets: a systematic review

Area of Science:

• Urology
• Radiology
• Oncology

Background:

• Advancements in prostate magnetic resonance imaging (MRI) have enabled its use for targeted prostate biopsies.
• This shift aims to improve diagnostic accuracy and patient outcomes in prostate cancer detection.

Purpose of the Study:

• To systematically review and compare the accuracy of MRI-targeted biopsy versus standard transrectal biopsy for detecting clinically significant prostate cancer.

Main Methods:

• A comprehensive literature search of PubMed, Embase, and Cochrane databases was conducted up to December 3, 2011.
• Four reviewers assessed 4222 records, with 50 unique studies directly comparing MRI-targeted and standard transrectal biopsy approaches.

Main Results:

• MRI-targeted biopsy detected clinically significant prostate cancer in 66% of biopsy-naive men with MRI abnormalities.
• Both methods detected clinically significant cancer in 43% of cases, with similar rates of missed significant cancers.
• MRI-targeted biopsy was more efficient, requiring fewer cores (3.8 vs. 12) and biopsying fewer men overall, while reducing diagnoses of insignificant cancer.

Conclusions:

• MRI-guided biopsy is as effective as standard biopsy for detecting clinically significant prostate cancer.
• The MRI-targeted approach reduces the number of men biopsied and the number of cores taken, also decreasing diagnoses of clinically insignificant cancer.
• Methodological variability necessitates further robust multicenter trials to strengthen recommendations for MRI-targeted biopsies.