Characterization of prostate cancer using T2 mapping at 3T: a multi-scanner study.

Area of Science:

• Radiology
• Oncology
• Medical Imaging

Background:

• Multiparametric MRI (mpMRI) is crucial for prostate cancer detection.
• T2-weighted imaging provides valuable information about tissue properties.

Purpose of the Study:

• To evaluate the prostate T2 value's efficacy in predicting malignancy.
• To compare T2 values across two different 3T MRI scanners.

Main Methods:

• Retrospective analysis of 83 pre-prostatectomy mpMRIs from GE and Philips 3T scanners.
• Measurement of T2 values in regions of interest: cancers, false positives, and normal tissue.
• Correlation of MRI findings with prostatectomy specimen results.

Main Results:

• In the peripheral zone (PZ), cancers exhibited significantly lower T2 values than false positives and normal tissue.
• T2 values were predictive of Gleason grade 7 or higher cancers, with specific thresholds identified.
• No significant difference in mean T2 values was observed between the two scanners for any tissue class.

Conclusions:

• Prostate T2 values are a significant predictor of higher-grade (Gleason ≥7) prostate cancers in the PZ.
• Mean T2 values are comparable across different 3T MRI scanners, suggesting potential for standardization.