Integration of T2 and Diffusion-Weighted MRI with Template Prostate Biopsies in Men with Prior Negative TRUS Biopsies

Overview

This study evaluated the diagnostic accuracy of transperineal template prostate biopsies (TPB) combined with T2-weighted and diffusion-weighted MRI in men with suspected prostate cancer and prior negative transrectal ultrasound (TRUS) biopsies. Using patient-specific 3D printed prostate molds, the study correlated imaging and biopsy findings with radical prostatectomy histology, demonstrating improved lesion localization and cancer detection.

Background

TRUS-guided biopsy is a standard diagnostic tool for prostate cancer but has limitations, especially in men with prior negative biopsies and rising PSA levels. Transperineal template biopsies offer improved sampling of the prostate, particularly the anterolateral regions, and may reduce infection risk. T2-weighted MRI and diffusion-weighted imaging (DWI) provide anatomical and functional information that can enhance lesion detection. However, data correlating mpMRI, template biopsies, and whole-mount prostatectomy histology using 3D printed molds are limited.

Data Highlights

Key Findings

• TPB combined with T2-weighted and diffusion-weighted MRI improves detection of prostate cancer in men with prior negative TRUS biopsies.
• 3D printed patient-specific prostate molds enable precise correlation between MRI findings, biopsy results, and whole-mount prostatectomy histology.
• Multiparametric MRI protocols including anatomical and functional sequences enhance lesion localization and characterization.
• TPB provides better sampling of the anterolateral prostate regions compared to TRUS biopsies.
• Use of 3T mpMRI and advanced imaging sequences supports improved diagnostic accuracy and patient-specific surgical planning.

Clinical Implications

Incorporating T2-weighted and diffusion-weighted MRI with transperineal template biopsies can enhance prostate cancer detection in patients with prior negative TRUS biopsies and rising PSA. Patient-specific 3D printed molds facilitate accurate histopathological correlation, potentially improving diagnostic confidence and guiding targeted treatment strategies. This integrated approach may reduce repeat biopsy rates and optimize patient management.

Conclusion

The integration of advanced MRI techniques with template prostate biopsies and patient-specific 3D mold histology offers a promising diagnostic pathway for men with suspected prostate cancer after negative TRUS biopsies. This method improves lesion detection and anatomical correlation, supporting personalized clinical decision-making.

References

1. Urological Society of Australia and New Zealand Audit 2015 -- Use of Transperineal Biopsies
2. European Society of Uro-radiology Guidelines 2012 -- Multiparametric MRI Protocols
3. Rapid Prototyping in Prostate Cancer Surgery 2014 -- 3D Printed Molds for Histology