T2 mapping for the characterization of prostate lesions

Area of Science:

• Radiology
• Oncology
• Medical Imaging

Background:

• Prostate cancer (PCa) diagnosis can be challenging, especially differentiating it from chronic prostatitis.
• Accurate differentiation is crucial for appropriate patient management and treatment.
• Quantitative magnetic resonance imaging (mpMRI) techniques offer potential for improved diagnostic accuracy.

Purpose of the Study:

• To evaluate the diagnostic accuracy of quantitative T2 and apparent diffusion coefficient (ADC) values in distinguishing PCa from chronic prostatitis.
• To compare the performance of T2 mapping and ADC values in this differentiation.

Main Methods:

• Retrospective analysis of 55 patients with suspected PCa undergoing 3T mpMRI and quantitative T2 mapping before biopsy.
• Regions of interest (ROIs) were defined in focal lesions and normal prostate tissue.
• T2 mapping and ADC values were compared between PCa and chronic prostatitis using ROC analysis.

Main Results:

• Both PCa lesions and normal prostate tissue showed significantly lower ADC and T2 values compared to chronic prostatitis.
• Receiver operating characteristic (ROC) analysis demonstrated high diagnostic accuracy for both ADC (AUC=0.85) and T2 mapping (AUC=0.84).
• A significant correlation was observed between ADC and T2 values (r=0.70, p<0.001).

Conclusions:

• Quantitative T2 mapping exhibits high diagnostic accuracy for differentiating PCa from chronic prostatitis.
• The diagnostic performance of T2 mapping is comparable to that of ADC values.
• These quantitative MRI parameters can aid in distinguishing PCa from inflammatory prostate conditions.